Deciding between different voluntary movements implies a continuous control of the competition between potential actions. Many theories postulate a leading role of prefrontal cortices in this executive function, but strong evidence exists that a motor region like the primary motor cortex is also involved, possibly via inhibitory mechanisms. This was already shown during the pre-movement decision period, but not after movement onset. For this pilot experiment we designed a new task compatible with the dynamics of post-onset control to (...) study the silent period duration, a pause in electromyographic activity after single-pulse transcranial magnetic stimulation that reflects inhibitory mechanisms. A careful analysis of the SP during the ongoing movement indicates a gradual increase in inhibitory mechanisms with the level of competition, consistent with an increase in mutual inhibition between alternative movement options. However, we also observed a decreased SP duration for high-competition trials associated with change-of-mind inflections in their trajectories. Our results suggest a new post-onset adaptive process that consists in a transient reduction of GABAergic inhibition within M1 for highly conflicting situations. We propose that this reduced inhibition softens the competition between concurrent motor options, thereby favoring response vacillation, an adaptive strategy that proved successful at improving behavioral performance. (shrink)

Ideomotor theory of human action control proposes that activation of a motor representation can occur either through internally-intended or externally-perceived actions. Critically, sometimes these alternatives of eliciting a motor response may be conflicting, for example, when intending one action and perceiving another, necessitating the recruitment of enhanced action-control to avoid motor mimicry. Based on previous neuroimaging evidence, suggesting that reduced mimicry is associated with self-related processing, we aimed to experimentally enhance these action-control mechanisms during motor contagion (...) by inducing self-focus. In two within-subjects experiments, participants had to enforce their action intention against an external motor contagion tendency under heightened and normal self-focus. During high self-focus participants showed reduced motor mimicry, induced either by mirror self-observation or self-referential judgments. This indicates that a self-focus provoking situation can enhance online action-control mechanisms, needed to resist unintentional motor contagion tendencies and thereby enables a modulation of automatic mirroring responses. (shrink)

Freezing of gait can cause reduced independence and quality of life for many with Parkinson’s disease. Episodes frequently occur at points of transition such as navigating a doorway. Therapeutic interventions, i.e., drugs and exercise, do not always successfully mitigate episodes. There are several different, but not exclusive causes for freezing of gait. People with freezing of gait are able to navigate dynamic situations like stairways by utilizing a different attentional strategy to over-ground walking, but may freeze when passing through a (...) doorway. The question is, is it possible to employ a special attentional strategy to prevent freezing at this point? Motor imagery allows for learning motor skills in absolute safety and has been widely employed in a variety of populations, including other neuro-compromised groups. Motor imagery is not studied in a homologous manner in people with Parkinson’s Disease, leading to conflicting results, but may have the potential to establish a different attentional strategy which allows a subject to mitigate freezing of gait episodes. This paper will identify and discuss the questions that still need to be answered in order to consider this approach i.e., can this population access motor imagery, can motor imagery alter the attentional strategy employed when moving through doorways, what is the best motor imagery approach for people with Parkinson’s Disease and freezing of gait, and what dosage is most effective, while briefly outlining future research considerations. (shrink)

Introduction: Motor evoked potentials (MEPs) to transcranial magnetic stimulation are known to be susceptible to several sources of variability. However, conflicting evidences on individual characteristics in relatively small sample sizes have been reported. We investigated the effect of age, height, and sex on MEPs of the motor cortex and spinal roots in a large cohort. Methods: A total of 587 subjects clinically and neuroradiologically intact were included. MEPs were recorded during mild tonic contraction through a circular coil applied (...) over the “hot spot” of the first dorsal interosseous and tibialis anterior muscles, bilaterally. Central motor conduction time (CMCT) was estimated as the difference between MEP cortical latency and the peripheral motor conduction time by cervical or lumbar magnetic stimulation. Peak-to-peak MEP amplitude to cortical stimulation and right-to-left difference of each parameter were also measured. Results: After Bonferroni correction, general linear (multiple) regression analysis showed that both MEP cortical latency and peripheral motor conduction time at four limbs positively correlated with age and height. At lower limbs, an independent effect of sex on the same measures was also observed (with females showing smaller values than males). CMCT correlated with both age (negatively) and height (positively) when analyzed by a single regression; however, with a multiple regression analysis this significance disappeared, due to the correction for the multicollinearity within the dataset. Conclusions: Physical individual features need to be considered for a more accurate and meaningful MEPs interpretation. Both in clinical practice and in research setting, patients and controls should be matched for age, height, and sex. (shrink)

Previous studies have confirmed that the temporal attentional control created by the repetition of stimulus-response compatibility (SRC) tasks was transferred to shooting skills in lacrosse players. In the current study, we investigated whether combining motor imagery training with SRC tasks could enhance the scoring ability of lacrosse players. We grouped 33 male lacrosse players into three groups: an SRC task and motor imagery group (referred as to SRC+Image), an SRC task group, and a control group. Players in the (...) first two groups underwent five sessions of 200 SRC task trials. In addition, the SRC+Image group completed five sessions of motor imagery training. The control group underwent no training interventions. All three groups performed a lacrosse shooting test and a Simon task before and after training sessions to assess the magnitude of the interference effects of the various types of training they underwent. The results of the Simon task showed that repetition of 1,000 trials was enough to create a short-term representation with the incompatible special mapping being transferred to a dynamic activity like lacrosse shooting. Moreover, combination of a computer-based Type 2 task and motor-imagery training could effectively increase players’ scoring ability in a field of large spatial conflict. (shrink)

Mass media campaigns are widely and successfully used to change health decisions and behaviors for better or for worse in society. In the United States, media campaigns have been launched at local offices of the states’ department of motor vehicles to promote citizens’ willingness to organ donation and donor registration. We analyze interventional studies of multimedia communication campaigns to encourage organ-donor registration at local offices of states’ department of motor vehicles. The media campaigns include the use of multifaceted (...) communication tools and provide training to desk clerks in the use of scripted messages for the purpose of optimizing enrollment in organ-donor registries. Scripted messages are communicated to customers through mass audiovisual entertainment media, print materials and interpersonal interaction at the offices of departments of motor vehicles. These campaigns give rise to three serious concerns: (1) bias in communicating information with scripted messages without verification of the scientific accuracy of information, (2) the provision of misinformation to future donors that may result in them suffering unintended consequences from consenting to medical procedures before death (e.g, organ preservation and suitability for transplantation), and (3) the unmanaged conflict of interests for organizations charged with implementing these campaigns, (i.e, dual advocacy for transplant recipients and donors). We conclude the following: (1) media campaigns about healthcare should communicate accurate information to the general public and disclose factual materials with the least amount of bias; (2) conflicting interests in media campaigns should be managed with full public transparency; (3) media campaigns should disclose the practical implications of procurement as well as acknowledge the medical, legal, and religious controversies of determining death in organ donation; (4) organ-donor registration must satisfy the criteria of informed consent; (5) media campaigns should serve as a means of public education about organ donation and should not be a form of propaganda. (shrink)

In the last decades neuroscience provided so many important contributions to philosophy of mind that nowadays the latter is inconceivable without the former in every topic this philosophical branch deals with. The studies connected to action understanding provided great advances in the field of developmental psychology for what concerns social learning abilities grounded on imitation. All information received by the infants are transmitted through actions. It would be impossible to conceive infant imitation without action interpretation. According to Meltzoff’s “like-me” hypothesis, (...) imitation is possible in human infants already at birth in virtue of an identification mechanism with the adults supported by mirror neurons (MNs) based simulation system. However, if we split the types of actions into two general categories, instrumental and communicative actions, we will see, according to an alternative account, how infants modulate differently the comprehension of observed scenarios, depending on whether they are passive observers (in the case of instrumental actions) or actively involved (in the case of communicative actions). Such a recognition of action features seems to be evident through different degrees of motor activation, as ERP techniques applied to infants and young adults revealed. Neuroscientific evidence highlight the crucial role of brain areas connected to motor activation for action interpretation, but at the same time, they allow both a bottom-up process and a top-down process interpretation whereby the motor activation is seen as a product of action understanding rather than its determining causal factor. The aim of the present study is to examine such epistemological conflicting perspectives underlying action interpretation, and their repercussions on different social learning theories. (shrink)

The traditional sporting games correspond to a set of signs full of meanings, which come to life through the motor behaviors of the players as they participate in its semiotic semantics. As a result of this exchange, interpersonal conflicts may emerge because of each person’s semiotic interpretation of the sociomotor dynamics of the game. This research aimed to analyze the comments of intense negative emotions that arise in conflicts of a praxical nature in a TSG, in its different parts, (...) and in the motor interventions of its protagonists. A total of 160 university students participated in a competitive sociomotor traditional sporting game of cooperation-opposition: the Marro. At the end of the practice, all answered the validated GES-II questionnaire. Subsequently, a content analysis of 480 comments was performed using ATLAS.ti 8.4 software. The conclusion of this work verifies the existence of different levels of meaning in the semiotic experience that originate interpersonal conflicts in traditional sporting games. Considering the multidimensional network of signs and meanings that emerge in any game will help to understand the meaning of the protagonists’ conflictive motor conducts. (shrink)

Based on his experimental studies, Libet claims that voluntary actions are initiated by unconscious brain activities well before intentions or decisions to act are consciously experienced by people. This account conflicts with our common-sense conception of human agency, in which people consciously and intentionally exert volitions or acts of will to initiate voluntary actions. This paper offers an alternative interpretation of Libet's experiment. The cause of the intentional acts performed by the subjects in Libet's experiment should not be exclusively attributed (...) to special cerebral processes; conscious intentions formed at the beginning of the experiment, when the subjects received experimental instructions, must be taken into account. In addition, what the subjects were required to report was not a conscious intention or decision to act that conventionally figures in the etiology of voluntary action, but rather a perceived effective urge to move induced by specific experimental instructions. According to the alternative interpretation, the most suitable mental term correlated with the specific brain activity that precedes conscious, self-initiated voluntary bodily movements is volition. This account is supported by recent theories of function of the supplementary motor area . Therefore, the notion that we are the authors or originators of our own actions, which is fundamental to our common understanding of free will, moral responsibility and human dignity, can be preserved. (shrink)

A theory is presented to explain how accurate, single-joint movements are controlled. The theory applies to movements across different distances, with different inertial loads, toward targets of different widths over a wide range of experimentally manipulated velocities. The theory is based on three propositions. (1) Movements are planned according to “strategies” of which there are at least two: a speed-insensitive (SI) and a speed-sensitive (SS) one. (2) These strategies can be equated with sets of rules for performing diverse movement tasks. (...) The choice between SI and SS depends on whether movement speed and/or movement time (and hence appropriate muscle forces) must be constrained to meet task requirements. (3) The electromyogram can be interpreted as a low-pass filtered version of the controlling signal to the motoneuron pools. This controlling signal can be modelled as a rectangular excitation pulse in which modulation occurs in either pulse amplitude or pulse width. Movements to different distances and with loads are controlled by the SI strategy, which modulates pulse width. Movements in which speed must be explicitly regulated are controlled by the SS strategy, which modulates pulse amplitude. The distinction between the two movement strategies reconciles many apparent conflicts in the motor control literature. (shrink)

Spatial attention and eye-movements are tightly coupled, but the precise nature of this coupling is controversial. The influential but controversial Premotor theory of attention makes four specific predictions about the relationship between motor preparation and spatial attention. Firstly, spatial attention and motor preparation use the same neural substrates. Secondly, spatial attention is functionally equivalent to planning goal directed actions such as eye-movements (i.e. planning an action is both necessary and sufficient for a shift of spatial attention). Thirdly, planning (...) a goal directed action with any effector system is sufficient to trigger a shift of spatial attention. Fourthly, the eye-movement system has a privileged role in orienting visual spatial attention. This article reviews empirical studies that have tested these predictions. Contrary to predictions one and two there is evidence of anatomical and functional dissociations between endogenous spatial attention and motor preparation. However, there is compelling evidence that exogenous attention is reliant on activation of the oculomotor system. With respect to the third prediction, there is correlational evidence that spatial attention is directed to the endpoint of goal-directed actions but no direct evidence that this attention shift is dependent on motor preparation. The few studies to have directly tested the fourth prediction have produced conflicting results, so the extent to which the oculomotor system has a privileged role in spatial attention remains unclear. Overall, the evidence is not consistent with the view that spatial attention is functionally equivalent to motor preparation so the Premotor theory should be rejected, although a limited version of the Premotor theory in which only exogenous attention is dependent on motor preparation may still be tenable. A plausible alternative account is that activity in the motor system contributes to biased competition between different sensory representations with the winner of the competition becoming the attended item. (shrink)

The idea that the brain is a representational organ has roots in the nineteenth century, when neurologists began drawing conclusions about what the brain represents from clinical and experimental studies. One of the earliest controversies surrounding representation in the brain was the “muscles versus movements” debate, which concerned whether the motor cortex represents complex movements or rather fractional components of movement. Prominent thinkers weighed in on each side: neurologists John Hughlings Jackson and F.M.R. Walshe in favor of complex movements, (...) neurophysiologist Charles Sherrington and neurosurgeon Wilder Penfield in favor of movement components. This essay examines these and other brain scientists’ evolving notions of representation during the first eighty years of the muscles versus movements debate (c. 1873–1954). Although participants agreed about many of the superficial features of representation, their inferences reveal deep-seated disagreements about its inferential role. Divergent epistemological commitments stoked conflicting conceptions of what representational attributions imply and what evidence supports them. (shrink)

We respond to Morgan and Feeley’s critique on our article “Mass Media in Organ Donation: Managing Conflicting Messages and Interests.” We noted that Morgan and Feeley agree with the position that the primary aims of media campaigns are: “to educate the general public about organ donation process” and “help individuals make informed decisions” about organ donation. For those reasons, the educational messages in media campaigns should not be restricted to “information from pilot work or focus groups” but should include evidence-based (...) facts resulting from a comprehensive literature research. We consider the controversial aspects about organ donation to be relevant, if not necessary, educational materials that must be disclosed in media campaigns to comply with the legal and moral requirements of informed consent. With that perspective in mind, we address the validity of Morgan and Feeley’s claim that media campaigns have no need for informing the public about the controversial nature of death determination in organ donation. Scientific evidence has proven that the criteria for death determination are inconsistent with the Uniform Determination of Death Act and therefore potentially harmful to donors. The decision by campaign designers to use the statutory definition of death without disclosing the current controversies surrounding that definition does not contribute to improved informed decision making. We argue that if Morgan and Feeley accept the important role of media campaigns to enhance informed decision making, then critical controversies should be disclosed. In support of that premise, we will outline: (1) the wide-spread scientific challenges to brain death as a concept of death; (2) the influence of the donor registry and team-huddling on the medical care of potential donors; (3) the use of authorization rather than informed consent for donor registration; (4) the contemporary religious controversy; and (5) the effects of training desk clerks as organ requestors at the Department of Motor Vehicles offices. We conclude that organ donation is a medical procedure subject to all the ethical obligations that the medical profession must uphold including that of transparency and truthfulness. (shrink)

Choice reaction tasks are performed faster when stimulus location corresponds to response location. This spatial stimulus–response compatibility effect affects performance at the level of action planning and execution. However, when response selection is completed before movement initiation, the Simon effect arises only at the planning level. The aim of this study was to ascertain whether when a precocious response selection is requested, the Simon effect can be detected on the kinematics characterizing the online control phase of a non-ballistic movement. Participants (...) were presented with red or green colored squares, which could appear on the right, left, above, or below a central cross. Depending on the square's color, participants had to release one of two buttons, then reach toward and press a corresponding lateral pad. We found evidence of the Simon effect on both action planning and on-line control. Moreover, the investigation of response conflict at the level of previous trials, a factor that might determine interference at the level of the current response, revealed a conflict adaptation process across trials. Results are discussed in terms of current theories concerned with the Simon effect and the distinction between action planning and control. (shrink)

Animal research suggests that central serotonergic neurons are involved in behavioral suppression, particularly anxiety-related inhibition. The hypothesis linking decreased serotonin transmission to reduced anxiety as the mechanism in the anxiolytic activity of benzodiazepines conflicts with most clinical observations. Serotonin antagonists show no marked capacity to alleviate anxiety. On the other hand, clinical signs of reduced serotonergic transmission (low 5-HIAA levels in the cerebrospinal fluid) are frequently associated with aggressiveness, suicide attempts, and increased anxiety. The target article attempts to reconcile such (...) human and animal findings by investigating whether anxiety reduction or increased impulsivity is more Likely to account for animal behavioral changes associated with decreased serotonergic transmission. The effects of manipulating central serotonin in experimental anxiety paradigms in animals (punishment, extinction, novelty) are reviewed and compared with the effects of antianxiety drugs. Anxiety seems neither necessary nor sufficient to induce control by serotonergic neurons on behavior. Further evidence suggests that behavioral effects of anxiolytics thought to be mediated by decreases in anxiety are not caused by the ability of these drugs to reduce serotonin transmission. Blockade of serotonin transmission, especially at the level of the substantia nigra, results in a shift of behavior toward facilitation of responding. This behavioral shift is particularly marked when there is competition between acting and restraining response tendencies and when obstacles prevent the immediate attainment of an anticipated reward. It is proposed that serotonergic neurons are involved not only in behavioral arousal but also in enabling the organism to arrange or tolerate delay before acting. Decreases in serotonin transmission seem to be associated with the increased performance of behaviors that are usually suppressed, though not necessarily because of the alleviation of anxiety, which might contribute to the suppression. (shrink)

Infrastructure-making in interwar India was a dynamic, multilayered process involving roads and vehicles in urban and rural sites. One of their strongest playgrounds was Bombay Presidency and the Central Provinces in central and western India. Focusing on this region in the interwar period, this paper analyzes the varied relationship between peasant households and town-centred modernizing agents in the making of road transport infrastructures. The central argument of this paper is about the persistence of bullock carts over motor cars in (...) the region. This persistence was grounded in the specific regional environment, the effects of the 1930s economic depression, and the priorities of social classes. Pinpointing these connections, the paper highlights that “modernization” of infrastructure was not a simple, linear process of progressivist change, nor did it mean the survival of apparently “old” technologies in the modern era. Instead, the paper pays attention to conflicting social complexities, implications, and meanings of the connection between infrastructure and modernity that modernization assumptions often overlook. Here, the paper shows how technological change occurred as a result of real, material class interests pulling infrastructural technology in different directions. This was where and why arguments of road-motor lobbyists and cart advocates eventually clashed, and Gandhian social workers resisted motor transport in defense of peasant interests. (shrink)

Differential diagnosis of motor symptoms, for example, akinesia, may be difficult in clinical neuropsychiatry. Symptoms may be either of neurologic origin, for example, Parkinson's disease, or of psychiatric origin, for example, catatonia, leading to a so-called “conflict of paradigms.” Despite their different origins, symptoms may appear more or less clinically similar. Possibility of dissociation between origin and clinical appearance may reflect functional brain organisation in general, and cortical-cortical/subcortical relations in particular. It is therefore hypothesized that similarities and differences (...) between Parkinson's disease and catatonia may be accounted for by distinct kinds of modulation between cortico-cortical and cortico-subcortical relations. Catatonia can be characterized by concurrent motor, emotional, and behavioural symptoms. The different symptoms may be accounted for by dysfunction in orbitofrontal-prefrontal/parietal cortical connectivity reflecting “horizontal modulation” of cortico-cortical relation. Furthermore, alteration in “top-down modulation” reflecting “vertical modulation” of caudate and other basal ganglia by GABA-ergic mediated orbitofrontal cortical deficits may account for motor symptoms in catatonia. Parkinson's disease, in contrast, can be characterized by predominant motor symptoms. Motor symptoms may be accounted for by altered “bottom-up modulation” between dopaminergic mediated deficits in striatum and premotor/motor cortex. Clinical similarities between Parkinson's disease and catatonia with respect to akinesia may be related with involvement of the basal ganglia in both disorders. Clinical differences with respect to emotional and behavioural symptoms may be related with involvement of different cortical areas, that is, orbitofrontal/parietal and premotor/motor cortex implying distinct kinds of modulation – “vertical” and “horizontal” modulation, respectively. Key Words: Bottom-up modulation; catatonia; horizontal modulation; Parkinson's disease; top-down modulation; vertical modulation. (shrink)

Ecological Psychology and Enactivism both challenge representationist cognitive science, but the two approaches have only begun to engage in dialogue. Further conceptual clarification is required in which differences are as important as common ground. This paper enters the dialogue by focusing on important differences. After a brief account of the parallel histories of Ecological Psychology and Enactivism, we cover incompatibility between them regarding their theories of sensation and perception. First, we show how and why in ecological theory perception is, crucially, (...) not based on sensation. We elucidate this idea by examining the biological roots of work in the two fields, concentrating on Gibson and Varela and Maturana. We expound an ecological critique of any sensation-based approach to perception by detailing two topics: classic retinal image theories and perception in single-celled organisms. The second main point emphasizes the importance of the idea of organism-environment mutuality and its difference from structural coupling of sensations and motor behavior. We point out how ecological - phenomenological methods of inquiry grow out of mutualism and compare Gibson’s idea of visual kinesthesis to Merleau-Ponty’s idea of the lived body. Third, we conclude that Ecological Psychology and varieties of Enactivism are laying down different paths to pursue related goals. Thus, convergence of Ecological Psychology and Enactivism is not possible given their conflicting assumptions, but cross-fertilization is possible and desirable. (shrink)

This paper presents a systematic analysis of the various steps of goal-processing and intention creation, as the final outcome of goal-driven action generation. Intention theory has to be founded on goal theory: intentions require means-end reasoning and planning, conflict resolution, coherence. The process of intention formation and intentional action execution is strictly based on specific sets of beliefs (predictions, evaluations, calculation of costs, responsibility beliefs, competence, etc.). The origin of an intention is not necessarily a “desire” (which is just (...) a kind of goal). Intention is a two-layered goal-structure: the intended action(s) to be executed, and the intended outcome motivating that action—with two distinct kinds of “failure”. This belief-goal perspective also allows to examine two stages/types of intention, and the relations and differences between intention “in agenda” (future directed) and intention under execution (intention in action). I will argue that the will is much more than the intention driving an intentional action. I will also claim that intentions are not there just for motivating and regulating intentional actions (from the motor level to more complex behaviors), but that they play also several other important roles. (shrink)

It appears to be a straightforward implication of distributed cognition principles that there is no integrated executive control system (e.g. Brooks 1991, Clark 1997). If distributed cognition is taken as a credible paradigm for cognitive science this in turn presents a challenge to volition because the concept of volition assumes integrated information processing and action control. For instance the process of forming a goal should integrate information about the available action options. If the goal is acted upon these processes should (...) control motor behavior. If there were no executive system then it would seem that processes of action selection and performance couldn’t be functionally integrated in the right way. The apparently centralized decision and action control processes of volition would be an illusion arising from the competitive and cooperative interaction of many relatively simple cognitive systems. Here I will make a case that this conclusion is not well-founded. Prima facie it is not clear that distributed organization can achieve coherent functional activity when there are many complex interacting systems, there is high potential for interference between systems, and there is a need for focus. Resolving conflict and providing focus are key reasons why executive systems have been proposed (Baddeley 1986, Norman and Shallice 1986, Posner and Raichle 1994). This chapter develops an extended theoretical argument based on this idea, according to which selective pressures operating in the evolution of cognition favor high order control organization with a ‘highest-order’ control system that performs executive functions. (shrink)

It appears to be a straightforward implication of distributed cognition principles that there is no integrated executive control system (e.g. Brooks 1991, Clark 1997). If distributed cognition is taken as a credible paradigm for cognitive science this in turn presents a challenge to volition because the concept of volition assumes integrated information processing and action control. For instance the process of forming a goal should integrate information about the available action options. If the goal is acted upon these processes should (...) control motor behavior. If there were no executive system then it would seem that processes of action selection and performance couldn’t be functionally integrated in the right way. The apparently centralized decision and action control processes of volition would be an illusion arising from the competitive and cooperative interaction of many relatively simple cognitive systems. Here I will make a case that this conclusion is not well-founded. Prima facie it is not clear that distributed organization can achieve coherent functional activity when there are many complex interacting systems, there is high potential for interference between systems, and there is a need for focus. Resolving conflict and providing focus are key reasons why executive systems have been proposed (Baddeley 1986, Norman and Shallice 1986, Posner and Raichle 1994). This chapter develops an extended theoretical argument based on this idea, according to which selective pressures operating in the evolution of cognition favor high order control organization with a ‘highest-order’ control system that performs executive functions. (shrink)

Recent cognitive models of delusions have attempted to explain why delusions are commonly circumscribed, in that they tend to center on isolated beliefs, and incorrigible, as they often persist in the face of countervailing evidence. In this effort, the suggestion has been made that ‘modularity’ – a concept originating in seminal accounts of the architecture of perceptual and cognitive processes – may help explain delusions. The aim of this paper is to take up this suggestion, critically evaluating the applicability of (...) modularity and its attendant features to the explanation of delusions. The conclusion presented here is that although a modular explanation of delusions may be relatively consistent with models that implicate dysfunctional cognitive components such as motor control and ‘theory of mind’ (ToM) systems, ultimately the application of modularity to delusions conflicts with traditional understandings of cognitive architecture and does not help provide satisfactory or sufficient explanations of delusional symptomatology. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Sweating the Small StuffTim CunninghamAs an emergency nurse, I often do not notice the small stressors as compared to the loads of intense physical and emotional suffering I witness while working at a level–one–trauma center. The horrendous deaths and injuries caused by gun violence, motorized vehicles, people in emotional distress and those suffering from chronic diseases build up on the mind as a veritable ‘scrapbook of nightmares.’ Emergency providers (...) know, in taking on this profession, that this is ‘all in a day’s work.’ Consequently, we put our selves at risk for emotional burnout as we bear witness to profound suffering while trying to improve lives.I see the traumas, the end–of–life decision making thrust upon families amidst a medical crisis and the other aspects of emergent suffering as bails of hay, against which I tried to build coping mechanisms in order to experience them but also be able to let go. For the most part I am confident to report that I have been able to work through major traumatic situations without belaboring the emotional residue. What I have failed to notice though are not the bails of hay, but individual straws of which they are made.A straw that nearly broke my back came to my pediatric emergency room as a 9–year–old girl who was involved in a low speed motor vehicle collision. She was restrained in the passenger seat; and although she was walking at the scene and crying, she was backboarded by EMS and placed in a cervical spine brace. On arrival to our emergency department she presented with normal vital signs and mutation. Her only complaint was diffuse abdominal pain. We preformed a FAST (Focused Assessment with Sonography for Trauma) exam, which was negative for free abdominal blood. Despite our efforts to make the patient comfortable, we were unable to ease her pain. The patient reported that her pain decreased after we took her off the backboard, but she still did not feel herself.Our attending and resident physicians decided that this child should have an abdominal computed tomography scan (CT) to rule out organ damage with subsequent bleeding. According to hospital protocol, this decision was within our standards of care. I stood by the family when the physician team discussed the plan of care and noticed the parents’ collective body language, which was troubled. I left the room with the physicians but not long after, the family subtly requested that I speak with them.The family was concerned about the radiation to which their child would be exposed. At the same time, they too were concerned about her abdominal pain and understood that a CT could confirm serious abdominal injury. They knew the gravity of the worst–case scenario and wanted to do what was best for their child.The mother asked me if this girl were my child what would I do.My first thought was: No CT, go home, watch her and return if symptoms worsen. My second thought conflicted with the first as I realized this was instruction that fell out of protocol differing from the opinions of the physician team. I paused before responding and found myself sputtering some pointless information about CT scans and mechanisms of injuries sustained from car accidents—I [End Page E9] was filling space, avoiding their question as I pondered the best answer.The girl’s parents told me that one was leaning towards the CT and the other against, they wanted my advice to make a decision. They pressed me saying, “What would you do.” Although I felt an uneasiness and nausea in that moment, I told them my truth, which was that I would go home without the CT.The family appeared relieved and I felt the sensation of stress leaving my body as if I had just taken a deep breath. Contented, but a daughter still with abdominal pain, the family left that evening with specific instructions to watch for adverse symptoms.In that moment, I felt like I had done the right thing but by the end of my shift I left work questioning my choice. I lost sleep that night because of... (shrink)

One of the main obstacles to the realization of intentions for future actions and to the successful pursuit of long-term goals is lack of self-control. But, what does it mean to engage in self-controlled behaviour? On a motivational construal of self-control, self-control involves resisting our competing temptations, impulses, and urges in order to do what we deem to be best. The conflict we face is between our better judgments or intentions and “hot” motivational forces that drive or compel us (...) to act in opposing ways. In contrast, on an executive construal of self-control, the emphasis is not on overcoming temptation, but on overriding or inhibiting “cold” automatically triggered routines and habits that are at odds with what we intend to do. Our general aim in this chapter is to contribute to the development of an overarching theory of self-control by exploring ways in which these two apparently competing frameworks can be reconciled. We propose that self-control is best understood as a hybrid set of skills. We draw on recent work on expert motor skill to highlight important ways in which experts differ from novices in the capacities they deploy and the ways in which they deploy them. We consider analogies (and disanalogies) between the domain of sports expertise and the domain of self-control. We end by considering how such a hybrid approach can help us reconcile a motivational and an executive approach to self-control. (shrink)

It is now well-established that physical activity has positive effects on both physical and mental health. However, the influence of organized physical activity on school adaptive behavior of adolescents with disabilities and/or behavioral disorders remains unclear. School behavior adaptation involves the ability to learn, conform to school norms and manage school activities without major behavior conflicts. A cross-sectional study was conducted to test the differences between organized physical activity and non-organized physical activity in an after school program. Eighty Romanian adolescents (...) were recruited and allocated to three groups: with disabilities [Ds; N = 17, Mage = 14.55 years, 12 males and 5 females], with conduct disorders [CDs, N = 21, Mage = 14.52 years 16 males and 5 females], and participants who had not shown signs of conduct disorders or disabilities [as a control group; N = 42, Mage = 14.2 years 20 males and 22 females]. Personality traits, school behavior, and sensorimotor coordination were assessed by using the Eysenck personality questionnaire—junior scale, school in-adaptability questionnaire scale, and Vienna Test System Sport respectively. Multivariate analysis of variance MANOVA and discriminant analysis were used to examine differences between the psychological and sensorimotor coordination outcomes across three groups and three types of physical activity context: organized physical activity, non-organized physical activity, and no physical activity. The findings indicate that not participating in an organized physical activity program results in a reduced level of physical mobility and consequently is associated with maladaptive social and psychological outcomes. Thus, we argued that attending in an organized physical activity program is more beneficial for participants with disabilities and/or behavior disorders, due to an increase in the probability of school integration and development of their motor skills. Clearly more research is needed in order to investigate these effects in neurophysiological levels. (shrink)

This article considers Helmholtz’s relation to philosophy, including Fichte’s philosophy. Recent interpreters find Fichtean influence on Helmholtz, especially concerning the role of voluntary movement in distinguishing subject from object, or “I” from “not-I.” After examining Helmholtz’s statements about Fichte, the article describes Fichte’s ego-doctrine and asks whether Helmholtz could accept it into his sensory psychology. He could not accept Fichte’s core position, that an intrinsically active I intellectually intuits its own activity and posits the not-I as limiting and determining that (...) activity, because that account requires cognitive abilities that conflict with Helmholtz’s claim that the development of spatial perception relies primarily on associative memory and involves no direct awareness of the ego’s activity as such. Helmholtz would have known various accounts of the distinction between subject and object, or self and world, from sensory physiology, including associative accounts invoking voluntary motor movements and accounts describing checks on the perceiver’s activity. Some of the accounts cite Fichte on the I and not-I, but most do not, and none adopt Fichte’s Idealism. Finally, the article examines Helmholtz’s relation to metaphysics, finding that in all periods he rejected Fichtean Idealism and that the modest metaphysics of his mature period is a version of structural realism. (shrink)

Based on interviews with guide dog users from Sweden, Estonia and Germany and participatory observation of the teams’ work, the article discusses three kinds of semiotic challenges encountered by the guide dog teams: perceptual, sociocultural and communicative challenges. Perceptual challenges stem from a mismatch between affordances of the urban environment and perceptual and motoric abilities of the team. Sociocultural challenges pertain to the conflicting meanings that are attributed to dogs in different social contexts and to incompatible social norms. Challenges related (...) to intrateam communication and interpretation of the other counterpart’s behavior are mostly tied to the difficulties of placing the other’s activities in the right context. Germany, Estonia and Sweden differ in their history of guide dog institutions and the organisation of guide dog work, but the challenges of the guide dog users appear to be fairly similar. However, differences appear in the stress laid on one or another type of challenge as well as in the explanations provided by the informants for the background of the challenges. The challenges, as analysed in the article, reflect not only the existing problems of guide dog users, but also their expectations for a social and physical environment, in which the teams would feel welcome. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Subjective Experiences of Tourette SyndromeBeyond the Premonitory UrgeThe authors report no conflicts of interest.There is an evolving recognition in healthcare that the patient's subjective experience needs to be privileged both in understanding clinical phenomena and also ensuring the salience of outcomes used to evaluate the impact of treatment interventions. This is reflected in the expansion of patient-reported outcome measures to capture a person's perception of their own health, and (...) the increasing requirement of involving people with lived experience in the co-design of research studies (National Health and Medical Research Council, 2016) and care improvement initiatives. In mental health it has been long understood that observable behavioral phenomena can only partially inform clinical understanding of the experience of the patient living with the condition. However, capturing the patient's subjective experience faithfully remains a challenge.Tourette syndrome (TS) is a complex condition in which there are clearly observable behavioral phenomena (vocal and motor tics, compulsive and socially inappropriate behaviors), but also a broad and varied range of subjective phenomena reported by different individuals. These may include sensory phenomena such as the premonitory sensory urge preceding a tic, compulsions to touch things a certain number of times or do something repeatedly until it feels "just right," or bothersome intrusive thoughts or images. To further complicate the picture most patients with TS have one or more co-occurring conditions such as attention deficit hyperactivity disorder, obsessive-compulsive disorder, and anxiety, which may actually cause a greater burden of dysfunction and distress than the Tourette symptoms.In their paper, Curtis-Wendlandt et al. (2024) challenge the dependence of current psychiatric diagnostic criteria (e.g., the Diagnostic and Statistical Manual of Mental Disorders, 5th edition) on observable tics, and propose a broader and more dimensional approach to nosology which incorporates sensory, cognitive and affective phenomena. [End Page 47] Data from interviews they conducted identified that premonitory phenomena and urge experiences in tic disorders are more complex and diverse than what is currently reflected in the literature and clinical scales. They also interviewed participants who reported "no urges" or "no premonitory sensations." They commented that the literature generally treats reports of urge absences at face value, and does not address the likelihood that such reports may be ambiguous or problematic. Overall, they concluded that their research suggests that premonitory urges in TS are a complex and diverse phenomenon that requires further study. This reflects with our clinical experience in working with TS patients. Although a large proportion of older patients describe sensory-based premonitory urges, descriptions are not homogenous, with many describing other experiences preceding their tics.When evaluating a patient's response to an intervention (either behavioral or pharmacological) clinicians incorporate a range of information. This includes the severity of their tics (number, type, frequency, intensity, and associated impairment), as well as their mood, participation and performance in study, work, and social activities, and overall quality of life. Standard clinical practice would not typically include assessment of some of the subjective experiences which precede tics. If it was accepted that these subjective phenomena are indeed salient to the patient's well-being, then a challenge would be how to consistently and reliably capture these feelings to operationalize a comprehensive patient-centered assessment.The primary evidence-based treatment for tic disorders, comprehensive behavioral intervention for tics (CBIT), involves training to increase the awareness of premonitory urges (Woods et al., 2008). Furthermore, successful 'blocking' of tics during the course of CBIT requires the patient to be aware of premonitory urges. Clinicians having a better understanding of the complexity and diversity of experiences which precede tics, as well as using open-ended questioning styles, may assist with improving CBIT outcomes. [End Page 48]Related ArticlesFeature Article: Dimensions, Not Types: On the Phenomenology of Premonitory Urges in Tourette SyndromeCommentary: Priming and Narrative Habits in the Phenomenological Interview: Reflections on a Study of Tourette SyndromeCommentary: Subjective Experiences of Tourette Syndrome: Beyond the Premonitory UrgeResponse: Phenomenological Interviews and Tourette’sDaryl EfronThe Royal Children's Hospital MelbourneIvan MathiesonThe Laneway ClinicDaryl Efron Daryl Efron is a Consultant Pediatrician, Royal Children's Hospital Senior Research Fellow, Murdoch... (shrink)

The emulation theory of representation articulated in the target article is further explained and explored in this response to commentaries. Major topics include: the irrelevance of equilibrium-point and related models of motor control to the theory; clarification of the particular sense of “representation” which the emulation theory of representation is an account of; the relation between the emulation framework and Kalman filtering; and addressing the empirical data considered to be in conflict with the emulation theory. In addition, I (...) discuss the further empirical support for the emulation theory provided by some commentators, as well as a number of suggested theoretical applications. (shrink)

Freud held complex and fascinating views on the question of mental causation. In this chapter, I propose an interpretation of Freud's views on this question, bringing together ideas from psychoanalysis, philosophy of psychoanalysis, and philosophy of mind. Faced with the impasse of the problem of how the mind interacts with the body, Freud created a two-dimensional picture of mental causation, with one dimension involving mechanistic causes and the other involving intentional causes. My thesis is that Freud's best-developed picture of mental (...) causation thesis describes mental causes as intentional causes using psychological vocabulary. I analyze three moments in Freud's work with a focus on mental causation. In the first topography, Freud uses a hybrid vocabulary, describing the mind in terms of both mechanistic causes and intentional causes. In his second topography, the mind increasingly assumes an intentional description. The third moment is Freud’s theory of anxiety, in which the arational cause of the unconscious drives, initially presented as a motor of the mind, gives rise to anxiety as an affective state that forces the self to find a solution for its mental conflicts. In the last part, I argue that Freud’s theory gradually moves from a reductionist approach to the mind-body problem on which mental causation is understood in terms of physical mechanisms, to a non-reductionist view where the mental becomes causally efficacious in its own right. (shrink)

In the philosophical and cognitive literature, the word ‘intention’ has been used with a variety of meanings which occasionally have been explicitly distinguished. I claim that an important cause of this polysemy is the fact that intentions are complex entities, endowed with an internal structure, and that sometimes different theories in the field are erroneously presented as if they were in conflict with each other, while they in fact just focus on different aspects of the phenomenon. The debate between (...) Gallese’s embodied simulation theory and Csibra and Gergely’s teleological stance hypothesis is discussed as a case in point, and some misunderstandings occurring in that debate are analyzed. The thesis that intentions are complex entities is argued for by shedding light on the following aspects of intentions: conscious control; perceptual (and not only motoric) representations of end-states; attributions of value to those representations; appreciation of the rational relationships between means and ends. (shrink)

Both short and long-term video-game play may result in superior performance on visual and attentional tasks. To further these findings, we compared the performance of experienced male video-game players (VGPs) and non-VGPs on a Simon-task. Experienced-VGPs began playing before the age of 10, had a minimum of 8 years of experience and a minimum play time of over 20 h per week over the past 6 months. Our results reveal a significantly reduced Simon-effect in experienced-VGPs relative to non-VGPs. However, this (...) was true only for the right-responses, which typically show a greater Simon-effect than left-responses. In addition, experienced-VGPs demonstrated significantly quicker reaction times and more balanced left-versus-right-hand performance than non-VGPs. Our results suggest that experienced-VGPs can resolve response-selection conflicts more rapidly for right-responses than non-VGPs, and this may in part be underpinned by improved bimanual motor control. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Priming and Narrative Habits in the Phenomenological InterviewReflections on a Study of Tourette SyndromeThe author reports no conflicts of interest.In "Dimensions, Not Types: On the Phenomenology of Premonitory Urges in Tourette Syndrome," Lisa Curtis-Wendlandt and Jack Reynolds provide new insights into some of the experiences characteristic of Tourette syndrome (TS). Their study is an excellent example of applied phenomenology (Burch, 2021), combining philosophy and qualitative research methods to illuminate (...) experiences that have often been mischaracterized in the existing literature. In their study, they focus on what is commonly referred to as a "premonitory urge" (PU): the "anticipatory urge that is often thought to precede the onset of the motor and phonic tics that are part of Tourette Syndrome" (Curtis-Wendlandt & Reynolds, 2024, p. 26). They ask not only whether PU is a necessary feature of TS, but also whether the very concept of PU accurately portrays the experiences and behaviors that it's intended to refer to. They point out that existing scales used to assess PU, for example, seem to implicitly narrow the relevant experiences by assuming that they are a) always negative and b) always internal, or inwardly focused (Curtis-Wendlandt & Reynolds, 2024, 26). Curtis-Wendlandt and Reynolds question these in-built assumptions about PU, suggesting that they may provide an overly narrow depiction that misses the genuine diversity of experiences that precede the onset of a motor or phonic tic.To explore these phenomena in more detail, they conducted a study intended to elicit fresh descriptions of these experiences. They interviewed 12 teenagers with a diagnosis of TS about their experiences of ticcing and tic suppression. Using the micro-phenomenological method (Petitmengin, 2006), they asked participants to reflect on a specific tic or tic suppression event and to recall the event in detail. Throughout the interview, [End Page 43] they asked open-ended questions about sensory, cognitive, or affective experiences surrounding the event. Through these interviews, they were able to generate rich descriptions of these experiences and investigate how these descriptions differed from standard accounts in the existing literature.Curtis-Wendlandt and Reynolds provide a detailed account of how they designed their phenomenological study, both philosophically and empirically. However, there is an important aspect of their method that they discuss only in a cursory or implicit way, which is what I want to focus on here. Throughout their study, they were concerned that participants might simply parrot back well-worn medicalized characterizations of PU. Such characterizations risk simplifying or even occluding key aspects of the participants' experiences that might be difficult to reflect upon or describe. However, despite stressing the importance of eliciting fresh descriptions, Curtis-Wendlandt and Reynolds provide only glimpses of how the interviews actually unfolded and what kinds of techniques they used to elicit these descriptions.In my experience, it is quite common to hear phenomenological psychologists and psychiatrists express concern that people may simply repeat common psychiatric or medicalized characterizations of their condition, rather than genuinely reflect upon and describe their first-person experiences. The philosophical assumption is that we all fall back on culturally sedimented language and terminology when describing our experiences. Someone who has spent extended periods of time interacting with psychiatrists and other healthcare professionals, for example, is likely to have picked up common ways of describing their condition—ways that may have helped them receive a diagnosis or obtain treatment. There is nothing inherently wrong with falling into these culturally sedimented characterizations. They facilitate everyday communication through a shared language and terminology. But phenomenologists are often concerned that this kind of culturally sedimented language covers over or obscures the phenomenon or experience they are trying to investigate. For example, if a psychiatrist has often described their patient's depressed mood as "sadness," then that patient may be likely to self-describe their mood as sadness in an interview setting. It might, in fact, be the case that their mood is best described as sadness. But it could also be the case that their mood would be more accurately described as, for instance, a sense of emptiness or feeling deep despair. The challenge is therefore to know whether someone's self-description is... (shrink)

Learning a novel environment involves integrating first-person perceptual and motoric experiences with developing knowledge about the overall structure of the surroundings. The present experiments provide insights into the parallel development of these egocentric and allocentric memories by intentionally conflicting body- and world-centered frames of reference during learning, and measuring outcomes via online and offline measures. Results of two experiments demonstrate faster learning and increased memory flexibility following route perspective reading (Experiment 1) and virtual navigation (Experiment 2) when participants begin exploring (...) the environment on a northward (vs. any other direction) allocentric heading. We suggest that learning advantages due to aligning body-centered (left/right/forward/back) with world-centered (NSEW) reference frames are indicative of three features of spatial memory development and representation. First, memories for egocentric and allocentric information develop in parallel during novel environment learning. Second, cognitive maps have a preferred orientation relative to world-centered coordinates. Finally, this preferred orientation corresponds to traditional orientation of physical maps (i.e., north is upward), suggesting strong associations between daily perceptual and motor experiences and the manner in which we preferentially represent spatial knowledge. (shrink)

Although mouse‐tracking has been taken as a real‐time window on different aspects of human decision‐making processes, whether purely semantic information affects response conflict at the level of motor output as measured through mouse movements is still unknown. Here, across two experiments, we investigated the effects of semantic knowledge by predicting participants’ performance in a standard keyboard task and in a mouse‐tracking task through distributional semantics, a usage‐based modeling approach to meaning. In Experiment 1, participants were shown word pairs (...) and were required to perform a two‐alternative forced choice task selecting either the more abstract or the more concrete word, using standard keyboard presses. In Experiment 2, participants performed the same task, yet this time response selection was achieved by moving the computer mouse. Results showed that the involvement of semantic components in the task at hand is observable using both standard reaction times (Experiment 1) as well as using indexes extracted from mouse trajectories (Experiment 2). In particular, mouse trajectories reflected the response conflict and its temporal evolution, with a larger deviation for increasing word semantic relatedness. These findings support the validity of mouse‐tracking as a method to detect deep and implicit decision‐making features. Additionally, by demonstrating that a usage‐based model of meaning can account for the different degrees of cognitive conflict associated with task achievement, these findings testify the impact of the human semantic memory on decision‐making processes. (shrink)

Europe is a melting pot of diverse cultures, civilizations and amalgamation of various ethnicities. It is a land which faced many catastrophes, high intensity conflicts and wars. Two world wars have been fought on this land. Almost all the major nations participated directly or indirectly at massive scale. Franco-German axis is a term to explain the relations of both the countries in the context of their mutual cooperation and their significant role in contemporary political affairs of Europe. Post war era (...) 1945, congenial atmosphere of synchronization between both the countries replaced three century old French- German hostility. This tandem performed active role not only in the politically integrated European nation but also they played a vital role in the formation of single currency euro as well. Comparatively their functioning is becoming slow but they are still necessary for future of Europe. It is a general impression that the FrancoGerman alliance is facing critical phase, or in other words they are no longer being capable to act as the twin motor of European integration but Euro pe do not have an appropriate replacement. As far as the future of Franco-German relationship or leadership is concerned it acted necessary of European Union’s twin motor in the past but in recent years national interest became more supreme than the interest of European Union as a whole. (shrink)

REM sleep behaviour disorder is a REM sleep-related parasomnia which may be considered a “dissociated state of wakefulness and sleep”, given that conflicting elements of REM sleep and of wakefulness coexist during the episodes, leading to motor and behavioural manifestations reminiscent of an enacted dream. RBD has been reported in association with α-synucleinopathies: around a third of patients with Parkinson’s disease have full-blown RBD.Recent data indicate that PD patients with RBD are more prone to hallucinations than PD patients without (...) this parasomnia. However it is still not clear why RBD in PD is associated with an increased prevalence of VHs.Data exist which suggest that visual hallucinations in PD may be the result of untimely intrusions of REM visual imagery into wakefulness. RBD, which is characterised by a REM sleep dissociation pattern, might be a condition that particularly favours such intrusions. However, other hypotheses may be advanced. In fact, deficits in attentional, executive, visuoperceptual and visuospatial abilities have been documented in RBD and found to occur far more frequently in PD with RBD than in PD without RBD. Neuropsychological deficits involving visual perception and attentional processes are thought to play an important role in the pathophysiology of VHs. On this basis, RBD in PD could be viewed as a contributory risk factor for VHs. (shrink)

Earlier views associated cognition with the cortex, and the will with sub-cortical non-cognitive structures. But an emerging perspective is that cognition runs throughout the central nervous sys- tem, including areas typically linked to motor control. It is an important realization that perceptual/effector systems are pregnant with cognitive resources. Staying the course to achieve one 's goals amidst diverse pulls is the primary function of the will. One adaptation is to pre-commit oneself to future recursive actions consistent with one's plans. (...) Diverse brain regions are tied to the conflicts of competing interests that require willpower to persevere towards our longer-term goals. While it is debatable to what extent we are conscious of our willpower and its causal efficacy, the concept of the will is a fundamental category in understanding our mental architecture and a piece of our evolutionary history. (shrink)