The abilities to attribute an action to its proper agent and to understand its meaning when it is produced by someone else are basic aspects of human social communication. Several psychiatric syndromes, such as schizophrenia, seem to lead to a dysfunction of the awareness of one’s own action as well as of recognition of actions performed by other. Such syndromes offer a framework for studying the determinants of agency, the ability to correctly attribute actions to their veridical source. Thirty normal (...) subjects and 30 schizophrenic patients with and without hallucinations and/or delusional experiences were required to execute simple finger and wrist movements, without direct visual control of their hand. The image of either their own hand or an alien hand executing the same or a different movement was presented on a TV-screen in real time. The task for the subjects was to discriminate whether the hand presented on the screen was their own or not. Hallucinating and deluded schizophrenic patients were more impaired in discriminating their own hand from the alien one than the non-hallucinating ones, and tended to misattribute the alien hand to themselves. Results are discussed according to a model of action control. A tentative description of the mechanisms leading to action consciousness is proposed. (shrink)

Phillips & Silverstein argue that schizophrenia is a result of a deficit of the contextual coordination of neuronal responses. The authors propose that NMDA-receptors control these modulatory effects. However, hallucinations, which are among the principle symptoms of schizophrenia, imply a flaw in the interactions between neurons that is more fundamental than just a general weakness of contextual modulation.

The IPAP Schizophrenia Algorithm was originally designed in the form of a flow chart to help physicians optimise the treatment of schizophrenic patients. We examined the current version from the perspective of recent work on terminologies and ontologies thereby drawing on the resources of Basic Formal Ontology, and this with the objective to make the algorithm appropriate for Semantic Web applications. We found that Basic Formal Ontology is a rich enough theory to represent all the entities involved and (...) that applying the theory to the IPAP schizophrenia algorithm results in a representation that can be used by software agents to perform monitoring and control in a referent tracking environment. (shrink)

The present study is aim to discuss the gender differences in recovery and Quality of life among schizophrenic patients of Asghar Psychiatric hospital Karachi. A sample of 70 patients including male and female was selected. Only patients with schizophrenia in recovery were selected in study purpose. Purposive sampling method was used to select the sample. All patients were screened using Demographic sheets, RAS-DS and WHOQOL-BRIEF to be administered to the sample. The result of the study (...) indicated that significant differences of recovery score among male and female respondents were found. Female patients were higher scores of recovery with regards to all domains of RAS-DS and the males showed significantly better quality of life with regards to all domains: Physical health, Psychological health, Environment and Social relations than females. (shrink)

Respirer! Invisible poème Pur échange perpétuel de l'être qui m'est propre Contre l'espace du monde Dans lequelmoi-même rythmiquement j'adviens...Vague unique dont je suis la mer successive Rainer maria Rilke, Sonnets à Orphée Ou comment l'ergothérapeute peut mettre en forme une dysharmonie rythmique dans un espace transitionnel faisant office de tenant-lieu chez un patient schizophrène dont l'immuabilité de sa vie quotidienne viendrait en contrepoint de son chaos psychique. Le rythme n'est - Psychanalyse et psychothérapie – Nouvel article.

In lieu of an abstract, here is a brief excerpt of the content:Psychodramatic Psychotherapy for Schizophrenic IndividualsJohn Nolte, MD, PhD (bio)As a long-time student, practitioner, trainer, author and advocate of J. L. Moreno, MD,’s works and specifically the psychodramatic method, I am always appreciative of efforts, like Chapy’s, to commend and advocate for psychodrama. This is especially so because for a time, Moreno and psychodrama were heavily criticized, even maligned in the mental health professions. At the same time, considering (...) how poorly Moreno and his methods have been understood as well as the difficulty of accessing his original material, I feel an obligation to set the record straight when confronted with incomplete, inadequate, or sometimes incompetent expositions of Moreno’s psychodrama.Chapy’s article recommends psychodrama as a treatment method for schizophrenic people by calling upon existentialist and phenomenological concepts. Psychodrama, he proposes, opens up existence by allowing “schizophrenic patients to incorporate the experience of an ‘absolutely other.’”There are major flaws in Chapy’s presentation. His “clinical illustration,” the presentation of a psychodrama with a schizophrenic patient, while it may be considered psychodrama under the broadest definition of the term, hardly fulfills the requirements of a psychotherapeutic psychodrama. We must question the competence of the psychodramatist in Chapy’s example. Chapy’s description of the drama itself falls short of being an adequate account of a psychodrama, failing to convey the emotional intensity and realness which a well directed and reported psychodrama achieves. We do not learn, for example, if Damien’s perception of his father is introduced through role reversal with the father, a standard psychodramatic technique which is done in order to give the auxiliary ego taking that role an understanding how Damien experiences his father. We do not know if role reversals are made throughout the drama so that Damien can experience how he is perceived by father, can feel the force of his confrontation in the role of father, and is required to reply as his father to his confrontation. We are given little information about the psychodramatic techniques employed by the director other than the scene setting of the studio in which the psychodramatic [End Page 227] encounter takes place, and the soliloquy in which Damien expresses his worry and hopes for the outcome of the confrontation. It should be clear in the description of the drama whether the father’s statements in the drama were produced by Damien in role reversal, or by the auxiliary ego playing the role. There is a difference and it is significant. Although we are told that Damien “evokes a systematic relationship between him and his father” during the psychodrama, we do not see how this happens. Every psychodrama is an existential experience and its description should fully communicate its meaning and emotion.A more serious problem, however, is that this drama does not deal with Damien’s psychosis. Although Damien may be diagnosed as schizophrenic, his disorder is obviously in remission or controlled by psychotropic drugs. The drama reveals none of the hallucinations, delusions, or disorder characteristic of schizophrenic disorders. It could be psychodrama of any young man with a complaint about his father.The notion that people with schizophrenia can be successfully treated by psychodrama is not new. Moreno began developing psychodramatic psychotherapy at his Beacon Hill Sanitarium, established in 1936. He and psychodrama gained some fame because of his success in treating schizophrenic patients at a time when schizophrenic individuals were considered incapable of benefitting from psychotherapy. Moreno’s approach to the treatment of schizophrenic patients was much more robust than the psychodrama described by Chapy. During a psychotic attack, the individual’s perception of the world and self are distorted in ways that made action and interaction in the world of conventional reality impossible. Additionally, the psychotic episode makes the psychotic person incapable of being comprehended by anyone else, including the psychiatrist. Moreno’s solution was to make the chaotic, bewildering, sometimes violent and always terrifying inner world visible and tangible in the surplus reality of the psychodramatic stage. In moments of lucidity following the psychotic episode, he asked his schizophrenic patients to reenact their psychotic experiences. The result was that, “In this imaginary reality on the psychodramatic stage, the... (shrink)

In chronic schizophrenic patients with both positive and negative symptoms (see Table 1), interhemispheric connections at the high frequency beta2-rhythm are absent during cognitive tasks, in contrast to normal controls, who have many interhemispheric connections at this frequency in the same situation. Connectivity is a fundamental brain feature, evidently greatly promoted by the NMDA system. It is a more reliable measure of brain function than the spectral power of this rhythm.

We are glad to acknowledge the wide spectrum of topics posited by our commentators and at the same time the recognition of the thematic issue of our project: that the mentally ill is still a person, and that this humane dimension of his existence must be brought to the fore in psychopathological studies and kept always in the fore in the therapeutic process.We are also glad to have encountered appreciation for the fact that long gone is the time when the (...) clinician could have afforded to be the plenipotentiary in the therapeutic relationship, and that a more equal geometry of relations with the patient is not only useful but probably necessary for therapeutic success, intended as a "success [that] also involves... (shrink)

Maher proposed in 1974 that schizophrenic delusions are hypotheses formed to explain anomalous experiences. He stated that they are “rational, given the intensity of the experiences that they are developed to explain.” Two-factor theorists of delusion criticized Maher’s theory because 1) it does not explain why some patients with anomalous experiences do not develop delusions, and 2) adopting and adhering to delusional hypotheses is irrational, considering the totality of experiences and patients’ other beliefs. In this paper, the (...) notion of the intensity of experience is reappraised to uphold Maher’s basic conception. Regarding 1), I propose that differences in the intensity of anomalous experience are vital to whether the patient forms delusions, while partially reforming his rationality claim regarding 2). Although adopting delusions is irrational, it is inevitable and excusable, given the intensity of the patient’s anomalous experience. With the aid of this notion, it is maintained that anomalous experience is sufficient for the development of delusions, at least in some cases of schizophrenia. Compared to other theories of schizophrenic delusion, Maher’s theory, which embraces the notion of intensity of experience, better explains why such irrational mental states as delusions develop from anomalous experiences, and why delusional patients persist in believing specific thematic content. (shrink)

Technical delusions are highly significant for the diagnosis of schizophrenia. What can we learn from the content and the formal aspects of this kind of delusion about the primary schizophrenic experiences underlying the technical delusion and about its meaning and purpose for the patient? In a phenomenological investigation of six schizophrenics, comparing their experiences in technical delusion with the normal experience of technical phenomena, I describe the patient's relationship to himself, to his world, and to others and the modalities (...) of his hallucinatory perceptions. Finally, I discuss the effect of the technical delusion on the patient's relationship to reality. (shrink)

To explore the change of brain connectivity in schizophrenics, the resting-state EEG source functional connections of SCZ and healthy control were investigated in this paper. Different band single-layer networks, multilayer networks, and improved multilayer networks were constructed and their topological attributes were extracted. The topological attributes of SCZ and HC were automatically distinguished using ensemble learning methods called Ensemble Learning based on Trees and Soft voting method, and the effectiveness of different network construction methods was compared based on the classification (...) accuracy. The results showed that the classification accuracy was 89.38% for α band network, 82.5% for multilayer network, and 86.88% for improved multilayer network. Comparing patients with SCZ to those with Alzheimer’s disease, the classification accuracy of improved multilayer network was the highest, which was 88.12%. The power spectrum in the α band of SCZ was significantly lower than HC, whereas there was no significant difference between SCZ and AD. This indicated that the improved multilayer network can effectively distinguish SCZ and other groups not only when their power spectrum was significantly different. The results also suggested that the improved multilayer topological attributes were regarded as biological markers in the clinical diagnosis of patients with schizophrenia and even other mental disorders. (shrink)

Imbalanced plasticity of neural networks in the brain is proposed to underlie deficits in the integration of efferent and afferent processes in schizophrenia. These deficits affect the priming of the behavior implementing systems by prior knowledge, and thus impair both controlled regulation and automatic activation of mental and motor processes. The sense of self as a distinct entity can consequently be undermined. In predominantly reality-distorting patients, hypo-plasticity of neural connectivity may cause the emergence of highly focused but inflexible patterns (...) of activation in their representation and response systems. This may lead to dominance of prepotent patterns of activity in these systems and a relative inability of higher control systems to bias lower level activity towards congruence with the ongoing cognitive and motor context. By contrast, predominantly disorganized patients are characterized by hyper-plastic connectivity. This leads to a weakening of prepotent response tendencies but also, as in reality-distorting patients, to less effective top-down contextual constraining. (shrink)

This study in comparative phenomenology offers a description of the lived-world of the Stimmung, an experience especially characteristic of early stages of schizophrenia. In this state, the patient will stare transfixed at an alienated perceptual world that may have one or more of several anomalous characteristics. The world may seem strangely unreal; objects may seem fragmented, or devoid of standard pragmatic meanings and manifesting instead their sheer existence; or objects and events may seem imbued with a tantalizing but ineffable quality (...) of significance. Like many schizophreniform symptoms, the Stimmung has often been considered to be radically alien, beyond the pale of an empathic comprehension. The nature of these symptoms and their role in the overall development of schizophreniform illnesses is discussed, largely through examining the experiences of “Renee,” author of the Autobiography of a Schizophrenic Girl. Certain closely analogous phenomena from the culture of early modernism are then considered— focussing primarily on works by Hugo von Hoffmansthal, a turn-of-the-century Austrian writer. The possibility of a detailed phenomenological description, as well as the existence of such close modernist parallels, would seem to contradict the widely held view that such symptoms are incomprehensible. (shrink)

Electroacupuncture (EA) and electroconvulsive therapy (ECT) are often used in the management of schizophrenia. This study sought to determine whether additional EA and ECT could augment antipsychotic response and reduce related side effects. In this retrospective controlled study, 287 hospitalized schizophrenic patients who received antipsychotics (controls, n = 50) alone or combined with EA (n = 101), ECT (n = 55) or both (EA+ECT, n = 81) were identified. EA and ECT were conducted for 5 and 3 sessions (...) per week, respectively, with a maximum of 12 sessions for ECT during hospitalization. The Scale for the Assessment of Positive Symptoms (SAPS) and Scale for the Assessment of Negative Symptoms (SANS) were used to assess the severity of psychotic symptoms. Clinical response on SAPS and SANS, weight gain, and adverse events were compared. Survival analysis revealed that the ECT and EA+ECT groups had markedly greater clinical response rate than controls on SAPS [72.7% and 90.1% vs. 64.0%; relative risk (RR), 1.974 and 2.628, respectively, P ≤ 0.004] and on SANS (67.3% and 70.4% vs. 42.0%; RR, 1.951 and 2.009, respectively, P ≤ 0.015). A significantly greater response rate on SANS than controls was also observed in the EA group (64.4% versus 42.0%; RR = 1.938, P = 0.008). EA-containing regimens remarkably reduced weight gain and incidences of headache, insomnia, dry mouth, and electrocardiographic abnormalities. These results suggest that EA and ECT can serve as additional treatment for enhancing antipsychotic response and reduce the side effects in hospitalized patients with schizophrenia. (shrink)

The notion of embodiment is central to the phenomenological approach to schizophrenia. This paper argues that fundamental concepts for the understanding of schizophrenia have a bodily dimension. We present two single cases of first-onset schizophrenic patients and analyze the reports of their experiences. Problems such as loss of self, loss of common sense, and intentionality disorders reveal a disconnectedness that can be traced back to a detachment from the lived body. Hyperreflectivity and hyperautomaticity are used as coping mechanisms, (...) but reflect the same problem of the split between body and mind. It is argued that the sole focus on cognitive impairments leads to a distorted image of schizophrenia, and that the acknowledgment of its fundamental bodily roots enables one to see the coherence between the diverse symptoms. As for the practical implications of the phenomenological approach, further research is needed to investigate if and how body- and movement-oriented therapies might strengthen the embodiment of schizophrenic patients. (shrink)

When participants observed a rubber hand being touched, their sense of touch was activated . While this illusion might be caused by multi-modal integration, it may also be related to empathic function, which enables us to simulate the observed information. We examined individual differences in the RHI, including empathic and schizotypal personality traits, as previous research had suggested that schizophrenic patients would be more subject to the RHI. The results indicated that people who experience a stronger RHI might (...) have stronger empathic and schizotypal personalites simultaneously. We discussed these relationships in terms of self-other representations. (shrink)

John Campbell (1999) has recently maintained that the phenomenon of thought insertion as it is manifested in schizophrenic patients should be described as a case in which the subject is introspectively aware of a certain thought and yet she is wrong in identifying whose thought it is. Hence, according to Campbell, the phenomenon of thought insertion might be taken as a counterexample to the view that introspection-based mental selfascriptions are logically immune to error through misidentification (IEM, hereafter). Thus, (...) if Campbell is right, it would not be true that when the subject makes a mental self-ascription on the basis of introspective awareness of a given mental state, there is no possible world in which she could be wrong as to whether it is really she who has that mental state. Notice the interesting interdisciplinary implications of Campbell’s project: on the one hand, a fairly precise notion elaborated in philosophy such as IEM (and the related notion of error through misidentification, EM hereafter) is used to describe a characteristic symptom of schizophrenia.1 On the other hand, such a phenomenon, described in the way proposed, is taken to be a possible counterexample to a sort of “philosophical dogma” such as IEM of introspection-based non-inferential mental self-ascriptions. In the first section of the paper I will point out the characteristic features of EM and explain logical immunity to error through misidentification of introspection-based mental self-ascriptions; in the second section I will consider the case of thought insertion in more detail and show why, after all, it is not a counterexample to the view that introspectionbased mental self-ascriptions are logically IEM. Finally, I will offer a re-description of the phenomenon of thought insertion. (shrink)

This paper defends the view that knowledge about one's own intentions can be gained in part through perception, although not through introspection. The various kinds of misperception of one's intentions are discussed. The latter distinction is applied to the analysis of schizophrenic patients' delusion of control.

Abstract: How it is that one's own thoughts can seem to be someone else's? After noting some common missteps of other approaches to this puzzle, I develop a novel cognitive solution, drawing on and critiquing theories that understand inserted thoughts and auditory verbal hallucinations in schizophrenia as stemming from mismatches between predicted and actual sensory feedback. Considerable attention is paid to forging links between the first-person phenomenology of thought insertion and the posits (e.g. efference copy, corollary discharge) of current cognitive (...) theories. I show how deficits in the subconscious mechanisms regulating inner speech may lead to a 'fractured phenomenology' responsible for schizophrenic patients' reports of inserted thoughts and auditory verbal hallucinations. Supporting work on virtual environments is discussed, and lessons concerning the fixity of delusional belief are drawn. (shrink)

The study argues that linguistic/communication dysfunctions present in disorganized schizophrenia may stem, at least in part, from an impaired theory of mind. Using pragmatics and systemic linguistic theory, the study examined speech samples of two disorganized schizophrenic patients and attempted to determine if their communicative failures are because they lack theory of mind in the sense that they do not take into account the interlocutor's mind, i.e., the interlocutor's intentions, dispositions, and knowledge; or because they have a hyper-theory (...) of mind through which they over-attribute mental states to their interlocutor, i.e., assume that their interlocutor has access to their intentions, dispositions, and knowledge. The study indicates that disorganized schizophrenics are unlikely to be characterized as lacking a theory of mind; rather they seem to have a hyper-theory of mind, to which the psychopathological symptoms of hallucinations, delusions of reference and incoherent speech can be attributed. (shrink)

The study argues that linguistic/communication dysfunctions present in disorganized schizophrenia may stem, at least in part, from an impaired theory of mind. Using pragmatics and systemic linguistic theory, the study examined speech samples of two disorganized schizophrenic patients and attempted to determine if their communicative failures are because they lack theory of mind in the sense that they do not take into account the interlocutor's mind, i.e., the interlocutor's intentions, dispositions, and knowledge; or because they have a hyper-theory (...) of mind through which they over-attribute mental states to their interlocutor, i.e., assume that their interlocutor has access to their intentions, dispositions, and knowledge. The study indicates that disorganized schizophrenics are unlikely to be characterized as lacking a theory of mind; rather they seem to have a hyper-theory of mind, to which the psychopathological symptoms of hallucinations, delusions of reference and incoherent speech can be attributed. (shrink)

In this paper I aim to re-think the question of the world of persons with schizophrenia from the perspective of the German phenomenologist Max Scheler and that of the Japanese psychiatrist Bin Kimura. So far, no comparison between these two authors has been made, even though there are several convergences and evidence of Scheler’s indirect influence on Bin Kimura through Viktor von Weizsäcker. In recent years, Dan Zahavi, Louis Sass, and Josef Parnas have interpreted the modus vivendi of schizophrenic (...) patients in relation to a disturbance on the level of the “minimal self”. Subsequently, the discussion has highlighted the importance of disorders on the level of intercorporeality and intersubjectivity (Thomas Fuchs) and on the level of “existential feelings” (Matthew Ratcliffe). This paper argues that Max Scheler and Bin Kimura allow us to focus on an aspect which has been neglected so far: that of a “relational self” that relates to the very foundation of intersubjectivity and intercorporeality and that can thus be reborn in the encounter with the other and may position itself differently in the world. In Scheler’s perspective, the world of persons with schizophrenia is the result of an axiological disorder (valueception) that impairs contact with the primordial life impulse (Lebensdrang). As a consequence, they are incapable of attuning emotionally and socially with others: this prevents the singularity from being reborn in the encounter with the other and forces them to position themselves in their own solipsistic universe. Moving in a similar direction, Bin Kimura interprets the world of persons with schizophrenia as the result of a disorder of aida (one of the central concepts of Japanese culture that indicates the space of being in between). The disorder of aida compromises the basic relationship (Grundverhältnis in the sense of Viktor von Weizsäcker) and hinders what Bin Kimura calls festum, i.e. the birth of subjectivity, so that it is experienced by persons with schizophrenia only as ante festum. Starting from these two perspectives, I argue the existence of an axiological and anthropogenetic dimension of psychopathology. I begin with a discussion of Zahavi’s concept of minimal self and the thesis that reveals the disorders on this level of subjectivity as the origin of the world of persons with schizophrenia. I, then, analyze Max Scheler’s position and its historic importance for the emergence of phenomenological psychopathology. Thereafter, I introduce the concepts of “disorder of aida” (Bin Kimura) and “disorder of ordo amoris” (Max Scheler). Finally, I develop the concept of a “psychopathology of ordo amoris” by also comparing it with Ratcliffe’s thesis of “existential feelings”. (shrink)

A number of cognitive and behavioral variables influence the performance in tasks of theory of mind (ToM). Since two of the most important variables, memory and explicit expression, are impaired in schizophrenic patients, the ToM appears inconsistent in these patients. An ideal instrument of ToM should therefore account for deficient memory and impaired ability of these patients to explicitly express intentions. If such an instrument is developed, it should provide information that can be used not only (...) to understand the pathophysiology but also to monitor patients. (shrink)

Whoever paid the bill at the restaurant last night, will clearly remember doing it. Independently from the type of action, it is a common experience that being the agent provides a special strength to our memories. Even if it is generally agreed that personal memories (episodic memory) rely on separate neural substrates with respect to general knowledge (semantic memory), little is known on the nature of the link between memory and the sense of agency. In the present paper, we review (...) results from two experiments investigating the effects of agency on both explicit and implicit memory traces. Performance of normal subjects is compared to that of schizophrenic patients in order to explore the role of awareness of action on memory. It is proposed that reliable first-person information is necessary to create a stable and coherent motor memory trace. (shrink)

Current thinking suggests that dissociation could be a significant comorbid diagnosis in a proportion of schizophrenic patients with a history of trauma. This potentially may explain the term “schizophrenia” in its original definition by Bleuler, as influenced by his clinical experience and personal view. Additionally, recent findings suggest a partial overlap between dissociative symptoms and the positive symptoms of schizophrenia, which could be explained by inhibitory deficits. In this context, the process of dissociation could serve as an important (...) conceptual framework for understanding schizophrenia, which is supported by current neuroimaging studies and research of corollary discharges. These data indicate that the original conception of “split mind” may be relevant in an updated context. Finally, recent data suggest that the phenomenal aspects of dissociation and conscious disintegration could be related to underlying disruptions of connectivity patterns and neural integration. (shrink)

Experiences of thought-insertion are a first-rank, diagnostically central symptom of schizophrenia. Schizophrenic patients who undergo such delusional mental states report being first-personally aware of an occurrent conscious thought which is not theirs, but which belongs to an external cognitive agent. Patients seem to be right about what they are thinking but mistaken about who is doing the thinking. It is notoriously difficult to make sense of such delusions. One general approach to explaining the etiology of monothematic delusions (...) has come to be known as the endorsement model. This model claims that the patient holds her delusional belief because she simply trusts her bizarre experience and takes it at face value. The content of the bizarre experience thus plays a central role in the etiology of delusions. Despite being widely discussed with respect to delusions like Capgras and Cotard, an endorsement model of thought-insertion has not yet been formulated. This article seeks to fill this void by fleshing out and defending the endorsement approach to delusions of inserted thoughts. It aims to show that such an approach can be defended against objections that have been raised in the literature. In particular, it will be argued that there is nothing wrong with the idea of being first-personally aware of a thought which is presented in consciousness as being someone else's. The upshot is that with respect to delusions of thought-insertion, the endorsement model turns out to be a viable account of why patients come to believe that someone else is inserting thoughts into their minds. (shrink)

Co-morbidity of schizophrenia and autism is low because interpersonal concerns of schizophrenic patients presuppose developmental achievements that are absent in autism. Autism may arise if primary anxiety is not overcome at a key developmental stage by affective synchronisation between infant and caregiver. Schizophrenic patients will have learned to regulate primitive anxiety by affectively attuning to narrow social networks but remain highly vulnerable to exclusion from larger groups.

Contemporary experimental research has emphasised the role of centrally generated signals arising from premotor areas in voluntary muscular force perception. It is therefore generally accepted that judgements of force are based on a central sense, known as the sense of effort, rather than on a sense of intra-muscular tension. Interestingly, the concept of effort is also present in the classical philosophy: to the French philosopher Maine de Biran [Maine de Biran . Mémoire sur la décomposition de la pensée , Vrin, (...) Paris ], the sense of effort is the fundamental component of self-experience, the landmark of the exercise of the will. In the present review, after a presentation of the nature and neurophysiological bases of effort sensation, we will examine its possible involvement in the neurocognitive process of agency. We will further focus on delusions of alien control in schizophrenic patients. Experimental data suggest that these patients have an abnormal awareness of effort caused by cerebral anomalies in the frontal and parietal lobes. (shrink)

This work evaluated the structure of dreams in people affected by schizophrenia. The verbal reports of 123 schizophrenic patients were compared with 123 dream reports from a control group. In accordance with the Jungian conceptualization of, dreams as texts, dream reports were assessed using textual analysis processing techniques.Significant differences were found in textual parameters, showing that the dreams reports of schizophrenic patients differ from those of the control group. It is thus possible that schizophrenia probably underlies (...) changes in the oneiric production and dream reports. This work confirms the value of textual analysis in the study of oneiric material. (shrink)

Motor imagery provides a direct insight into action representations. The aim of the present study was to investigate the level of impairment of action monitoring in schizophrenia by evaluating the performance of schizophrenic patients on mental rotation tasks. We raised the following questions: Are schizophrenic patients impaired in motor imagery both at the explicit and at the implicit level? Are body parts more difficult for them to mentally rotate than objects? Is there any link between the (...) performance and the hallucinating symptom profile? The schizophrenic patients displayed the same pattern of performance as the control subjects . More particularly, schizophrenic patients’ reaction time varied as a function of the angular disparity of the stimuli. On the other hand, they were significantly slower and less accurate. Interestingly, patients suffering from hallucinations made significantly more errors than non-hallucinatory patients. We discussed these latter results in terms of deficit of the forward model. We emphasized the necessity to distinguish different levels of action, more or less impaired in schizophrenia. (shrink)

Wittgenstein distinguished between two uses of “I”, one “as object” and the other “as subject”, a distinction that Shoemaker elucidated in terms of a notion of immunity to error through misidentification (“IEM”); first-personal claims are IEM in the use “as subject”, but not in the other use. Shoemaker argued that memory judgments based on “personal”, episodic memory are not strictly speaking IEM; Gareth Evans disputed this. Similar issues have been debated regarding self-ascriptions of conscious thoughts based on first-personal awareness, in (...) the light of claims of “thought insertion” in schizophrenic patients. The paper aims to defend a Shoemaker-like line by critically engaging with some compelling recent contributions. Methodologically, the paper argues that to properly address these issues the all-inclusive term “thought” should be avoided, and specific types of thoughts countenanced. (shrink)