Aspects of Perception

On a now orthodox view, humans and many other animals possess a “number sense,” or approximate number system, that represents number. Recently, this orthodox view has been subject to numerous critiques that question whether the ANS genuinely represents number. We distinguish three lines of critique – the arguments from congruency, confounds, and imprecision – and show that none succeed. We then provide positive reasons to think that the ANS genuinely represents numbers, and not just non-numerical confounds or exotic substitutes for (...) number, such as “numerosities” or “quanticals,” as critics propose. In so doing, we raise a neglected question: numbers of what kind? Proponents of the orthodox view have been remarkably coy on this issue. But this is unsatisfactory since the predictions of the orthodox view, including the situations in which the ANS is expected to succeed or fail, turn on the kind of number being represented. In response, we propose that the ANS represents not only natural numbers, but also non-natural rational numbers. It does not represent irrational numbers, however, and thereby fails to represent the real numbers more generally. This distances our proposal from existing conjectures, refines our understanding of the ANS, and paves the way for future research. (shrink)

The philosophical investigation of perceptual illusions can generate fruitful insights in the study of subjective time consciousness. However, the way illusions are interpreted is often controversial. Recently, proponents of the so-called dynamic snapshot theory have appealed to the Waterfall Illusion, a kind of motion aftereffect, to support a particular view of temporal consciousness according to which experience is structured as a series of instantaneous snapshots with dynamic qualities. This dynamism is meant to account for familiar features of the phenomenology of (...) time, such as succession, continuity, and change. Previous theories have typically appealed to a subjective present occupying an interval of time; that is, a “specious present.” I argue, through analysis of motion aftereffect illusions and the rare condition of akinetopsia, i.e. motion-blindness, that the Waterfall Illusion fails to support the dynamic snapshot theory as intended. Furthermore, I suggest that future theories of subjective time should see temporal phenomenology as the result of non-localised processes closely tied to the mechanism underlying consciousness generally. (shrink)

Proponents of cognitive penetration often argue for the thesis on the basis of combined intuitions about categorical perception and perceptual learning. The claim is that beliefs penetrate perceptions in the course of learning to perceive categories. I argue that this “diachronic” penetration thesis is false. In order to substantiate a robust notion of penetration, the beliefs that enable learning must describe the particular ability that subjects learn. However, they cannot do so, since in order to help with learning they must (...) instruct learners to employ previously existing abilities. I argue that a better approach recognizes that we can have sophisticated causal precursors to perceptual learning, but that the learning process itself must operate outside of cognitive influence. (shrink)

According to the evaluativist theory of bodily pain, the overall phenomenology of a painful experience is explained by attributing to it two types of representational content—an indicative content that represents bodily damage or disturbance, and an evaluative content that represents that condition as bad for the subject. This paper considers whether evaluativism can offer a suitable explanation of aversive auditory phenomenology—the experience of awful noises—and argues that it can only do so by conceding that auditory evaluative content would be guilty (...) of widespread error. Defending such an error-theory, moreover, comes with several explanatory costs. (shrink)

Geometrical intuitions spontaneously drive visuo-spatial reasoning in human adults, children and animals. Is their emergence intrinsically linked to visual experience, or does it reflect a core property of cognition shared across sensory modalities? To address this question, we tested the sensitivity of blind-from-birth adults to geometrical-invariants using a haptic deviant-figure detection task. Blind participants spontaneously used many geometric concepts such as parallelism, right angles and geometrical shapes to detect intruders in haptic displays, but experienced difficulties with symmetry and complex spatial (...) transformations. Across items, their performance was highly correlated with that of sighted adults performing the same task in touch (blindfolded) and in vision, as well as with the performances of uneducated preschoolers and Amazonian adults. Our results support the existence of an amodal core-system of geometry that arises independently of visual experience. However, performance at selecting geometric intruders was generally higher in the visual compared to the haptic modality, suggesting that sensory-specific spatial experience may play a role in refining the properties of this core-system of geometry. (shrink)

Autism spectrum disorder is characterized by atypical perception, including processing that is biased toward local details rather than global configurations. This bias may impact on memory. The present study examined the effect of this perception on both implicit and explicit memory in conditions that promote either local or global processing. The first experiment consisted of an object identification priming task using two distinct encoding conditions: one favoring local processing and the other favoring global processing of drawings. The second experiment focused (...) on episodic memory with two different cartoon recognition tasks that favored either local or a global processing. In addition, all the participants underwent a general clinical cognitive assessment aimed at documenting their cognitive profile and enabling correlational analyses with experimental memory tasks. Seventeen participants with ASD and 17 typically developing controls aged from 10 to 16 years participated to the first experiment and 13 ASD matched with 13 TD participants were included for the second experiment. Experiment 1 confirmed the preservation of priming effects in ASD but, unlike the Comparison group, the ASD group did not increase his performance as controls after a globally oriented processing. Experiment 2 revealed that local processing led to difficulties in discriminating lures from targets in a recognition task when both lures and targets shared common details. The correlation analysis revealed that these difficulties were associated with processing speed and inhibition. These preliminary results suggest that natural perceptual processes oriented toward local information in ASD may impact upon their implicit memory by preventing globally oriented processing in time-limited conditions and induce confusion between explicit memories that share common details. (shrink)

Some simulationists have argued that the information obtained during the perceptual process of facial expression (the geometric features) is sufficient for recognition of the emotion intended by that expression. Drawing on evidence from cross-cultural studies, with particular attention to conceptual act theories, I show that both emotion expression and recognition are top-down modulated by expressivity norms, observer-specific internal representations, and expectations. I thus conclude that direct simulation, or a purely bottom-up approach, is not sufficient for emotion recognition. Next, I will (...) consider the generate and test strategy as an alternative to direct simulation. This is a highly promising approach in that top-down and bottom-up processes work in parallel, according to the presence, or not, of additional information. For this reason, it avoids the difficulties of direct simulation. I will argue, however, that it is based on a misconception of emotions, specifically on how emotions are represented in the brain. To improve the model, I distinguish between two different categorical approaches to emotions, then argue that only one of which is viable in a simulational account of emotion recognition. (shrink)

Size perception of visual objects is highly context dependent. Here we report a novel perceptual size illusion that the self-face, being a unique and distinctive self-referential stimulus, can enlarge its perceived size. By using a size discrimination paradigm, we found that the self-face was perceived as significantly larger than the other-face of the same size. This size overestimation effect was not due to the familiarity of the self-face, since it could be still observed when the self-face was directly compared with (...) a famous face. More crucially, such illusion effect could be extended to a new cartoon face that was transiently associated with one's own face and could also exert further contextual influences on visual size perception of other objects. These findings together highlight the role of self-awareness in visual size perception and point to a special mechanism of size perception tuned to self-referential information. (shrink)

Berger and Mylopoulos (2019) critique recent scepticism about unconscious perception, focusing on experimental work from Peters and Lau, and theoretical work of my own. Central to their wide-ranging discussion is the claim that unconscious perception occupies a default status within both experimental and folk psychology. Here, I argue to the contrary that a conscious-perception-only model should be our default. Along the way, I offer my own analysis of Peters and Lau's study, assess the folk psychological status of unconscious perception, discuss (...) vision-for-action, and confront an important dilemma which Berger and Mylopoulos raise for the sceptic concerning the existence of unconscious mentality in general. (shrink)

The world contains not only objects and features (red apples, glass bowls, wooden tables), but also relations holding between them (apples contained in bowls, bowls supported by tables). Representations of these relations are often developmentally precocious and linguistically privileged; but how does the mind extract them in the first place? Although relations themselves cast no light onto our eyes, a growing body of work suggests that even very sophisticated relations display key signatures of automatic visual processing. Across physical, eventive, and (...) social domains, relations such as SUPPORT, FIT, CAUSE, CHASE, and even SOCIALLY INTERACT are extracted rapidly, are impossible to ignore, and influence other perceptual processes. Sophisticated and structured relations are not only judged and understood, but also seen — revealing surprisingly rich content in visual perception itself. (shrink)

Clark (2018) worries that predictive processing accounts of perception introduce a puzzling disconnect between the content of personal-level perceptual states and their underlying subpersonal representations. According to PP, in perception, the brain encodes information about the environment in conditional probability density distributions over causes of sensory input. But it seems perceptual experience only presents us with one way the world is at a time. If perception is at bottom probabilistic, shouldn’t this aspect of subpersonally represented content show up in consciousness? (...) To address this worry, Clark argues that representations underlying personal-level content are constrained by the need to provide a single action-guiding take on the environment. However, this proposal rests a conception of the nature of agency, famously articulated by Davidson (1980a,b), that is inconsistent with a view of the mind as embodied-extended. Since Clark and other enactivist PP theorists present the extended mind as an important consequence of the predictive framework, the proposal is in tension with his complete view. I claim that this inconsistency could be resolved either by retaining the Davidsonian view of action and abandoning the extended-embodied approach, or by adopting a more processual, world-involving account of agency and perceptual experience than Clark currently endorses. To solve the puzzle he raises, Clark must become a radical enactivist or a consistent internalist. (shrink)

Current theories propose that our sense of curiosity is determined by the learning progress or information gain that our cognitive system expects to make. However, few studies have explicitly tried to quantify subjective information gain and link it to measures of curiosity. Here, we asked people to report their curiosity about the intrinsically engaging perceptual ‘puzzles’ known as Mooney images, and to report on the strength of their aha experience upon revealing the solution image (curiosity relief). We also asked our (...) participants (279) to make a guess concerning the solution of the image, and used the distribution of these guesses to compute the crowdsourced semantic entropy (or ambiguity) of the images, as a measure of the potential for information gain. Our results confirm that curiosity and, even more so, aha experience is substantially associated with this semantic information gain measure. These findings support the expected information gain theory of curiosity and suggest that the aha experience or intrinsic reward is driven by the actual information gain. In an unannounced memory part, we also established that the often reported influence of curiosity on memory is fully mediated by the aha experience or curiosity relief. We discuss the implications of our results for the burgeoning fields of curiosity and psychoaesthetics. (shrink)

In psycholinguistics, concepts are considered abstract if they do not apply to physical objects that we can touch, see, feel, hear, smell or taste. Psychologists usually distinguish concrete from abstract concepts by means of so-called concreteness ratings. In concreteness rating studies, laypeople are asked to rate the concreteness of words based on the above criterion. The wide use of concreteness ratings motivates an assessment of them. I point out two problems: First, most current concreteness ratings test the intuited concreteness of (...) word forms as opposed to concepts. This ignores the ubiquitous phenomenon of lexical ambiguity. Second, the criterion of abstract concepts that the instruction texts of rating studies rely on does not capture the notion that psychologists working on abstract concepts are normally interested in, i.e., concepts that could reasonably be sensorimotor representations. For many concepts that pick out physical objects, this is not reasonable. In this paper, I propose a characterization of concrete and abstract concepts that avoids these two problems and that may be useful for future studies in psychology. (shrink)

In ordinary language, “calmness”, “melancholy”, “cheerfulness”, and “sadness” are employed to describe affective states experienced by sentient beings. More precisely, these terms are used to report instances of moods. Yet, the very same terms are used to describe what seem to be properties of certain objects (e.g., things, situations) which, unlike sentient beings, are unable to feel. We usually describe atmospheres employing these terms: We speak about the calmness of a forest, the melancholy of a painting, the cheerfulness of a (...) field of flowers and the sadness of a landscape. Are we in fact referring to the same phenomenon? If not, why then do we employ the same terms? (shrink)

Culinary products have culinary value. That is, they have value qua culinary products. However, what is the nature of culinary value and what elements determine it? In the light of the central and universal role that culinary products play in our lives, offering a philosophical analysis of culinary value is a matter of interest. This paper attempts to do just this. It develops three different possible models of culinary value, two rather restricted ones and a third more encompassing one, rejects (...) the first two, and defends the third one. (shrink)

My dissertation contributes to a central and ongoing debate in the philosophy of perception about the fundamental nature of perceptual states. Such states include cases like seeing, hearing, or tasting as well as cases of merely seeming to see, hear, or taste. A central question about perceptual states arises in light of misperceptual phenomena. A commonsensical view of perceptual states construes them as simply relating us to the external and mind independent objects. But some misperceptual cases suggest that these states (...) fall short of contact with the world. The result is that perceptual states are either thought to fundamentally consist in a highest common factor that falls short of perceptual contact with the world, or are thought to be disjunctive in nature, with some cases involving perceptual contact, and others receiving a different analysis. Contrary to these views, I argue that no misperceptual cases compromise perceptual contact with worldly objects, so perceptual states should be understood as relations to the external and mind-independent world. I call this view I defend Pure Relationalism, and the view of misperceptual cases that makes pure relationalism possible Illusionism. (shrink)

We think of the world around us as divided into physical objects like toasters and daisies, rather than solely as a smear of properties like yellow and smooth. How do we single out these objects? One theory of object concepts uses part‐of relations and relations of connectedness. According to this proposal, an object is a connected spatial item of maximal extent: Any other connected item that overlaps (i.e., shares a part with) the object must be a part of that object. (...) This article reports four experiments that test this proposal. Participants see descriptions or diagrams of spatial items that vary across trials in their relative positions. In separate experiments, participants decide whether the items are physical objects, whether they are wholes, or how many objects are present. All experiments find support for connectedness as a contributor to object status, but they find little support for maximality. The results suggest that maximality is not a necessary feature of wholes or of objects. (shrink)

The view that a mental state is “transparent” is the view that the mental state is such that we cannot direct our attention directly towards the mental state, and that instead, when we try to do so, we attend to something in the external world rather than the mental state itself. Results from the study of internal attention put transparency views under a pressure that has so far been entirely unacknowledged in the literature. I focus on Garavan (1998) study of (...) switching the focus of internal attention from one mental count to another mental count. I argue that Garavan’s results are evidence that we can direct our attention to occurrent thought, contra Alexander Byrne’s (2008, 2018) claim that occurrent thought is actually transparent. (shrink)

Charles Travis has developed a distinction between “the historical” and “the conceptual”, which underlies his influential contributions to the philosophy of language and perception. The distinction is based on the observation that there are, for any thought, indefinitely many different circumstances that would render it true. The generality of thoughts and concepts contrasts with the particularity of the sensible world. I challenge the assumption that what exhibits such generality cannot belong to the sensible world. I also defend a version of (...) the claim that perception involves the exercise of conceptual capacities. (shrink)

The purpose of this paper is to give a critical reading of Noël Carroll’s account of visual metaphors. In particular, I have highlighted the possible issues arising from his proposal, focusing on two aspects: 1) homospatiality is not the pictorial equivalent for the ‘is’ of identity that, according to Carroll, can be found in verbal metaphors of the kind «A is B». The ‘is’ of verbal metaphors predicates an intension of the metaphorizing term - that the interpreter is supposed to (...) grasp through the context - and does not suggest identity between A and B; 2) it is hard to sustain that the comprehension of pictorial metaphors relies on a visual perception not mediated by codes. The article ends taking the moves from one of the final considerations advanced by Carroll – namely that a visual metaphor is a device for encouraging imaginative insights – and moves further, trying to sketch out a theory of visual metaphor leveraging the key role of mental images in cognition. (shrink)

This paper offers a new argument in favour of experiential pluralism about visual experience – the view that the nature of successful visual experience is different from the nature of unsuccessful visual experience. The argument appeals to the role of experience in explaining possession of ordinary abilities. In addition, the paper makes a methodological point about philosophical debates concerning the nature of perceptual experience: whether a given view about the nature of experience amounts to an interesting and substantive thesis about (...) our own minds depends on the significance of the psychological or mental kind claim made by it. This means that an adequate defence of a given view of the nature of experience must include articulation of the latter's significance qua psychological or mental kind. The argument advanced provides the material to meet this demand. In turn, this constitutes further support for the argument itself. (shrink)

I argue on the basis of extensive empirical research that perception and emotion are more deeply entangled than we might have thought. This evidence strongly suggests that we should expand our conception of perception to include emotional elements, and our conception of emotion to include perceptual ones. This expansion poses a challenge to our current taxonomic practices. In the face of this challenge, I advocate principled pluralism about psychological kinds. This view holds that, depending on our explanatory purposes, psychological processes (...) can be legitimately classified in more than one way. (shrink)

Many philosophers believe that there is a causal condition on perception, and that this condition is a conceptual truth about perception. A highly influential argument for this claim is based on intuitive responses to Gricean-style thought experiments. Do the folk share the intuitions of philosophers? Roberts et al. presented participants with two kinds of cases: Blocker cases and Non-Blocker cases. They found that a substantial minority agreed that seeing occurs in the Non-Blocker cases, and that in the Blocker cases significantly (...) less agreed that seeing occurs. They thus hypothesized that folk intuitions better align with a no blocker condition than with a causal condition. This paper continues this line of enquiry with two new experiments. The paper investigates the generality and robustness of Roberts et al.’s findings by expanding the sense modalities tested from only vision to audition and olfaction as well. The paper also uses Gricean-style thought experiments as a case study for investigating the “reflection defense” against the negative project in experimental philosophy. Our results replicate and extend Roberts et al.’s study and support their hypothesis that folk intuitions better align with a no blocker condition. They also provide an empirical reason to doubt the reflection defense. (shrink)

At least in one well-motivated sense of ‘concept’, all perception involves concepts, even perception as practiced by lizards and bees. That is because—the paper argues—all perception involves belief.

When seeing a jaguar, we can see all the spots on its mantle without seeing a determinate number, N, of spots on the mantle. How is this visual phenomenon possible? Philosophers have tried to provide a reliable answer to this question, by recruiting evidence from vision science about the way attention works. Here we push this idea forward, by suggesting that an alternative and less complex solution, with respect to the one proposed in the literature, is possible. In particular, we (...) argue that the puzzling visual phenomenon of 'seeing entities without seeing N-entities' strictly depends on the specific number of entities we are simultaneously attending to: a problematic scenario concerning this visual process arises only when the number of entities in the visual field exceeds a specific quantity. This depends, as we argue, on the fact that the nature of our visual content is modulated, in this perceptual scenario, by the limited way we can exercise visual attention on the properties of the objects of our perception. Differently from other accounts, our proposal allows us to properly define when and why such a problem arises, and explains why such a situation has traditionally been found to be so puzzling. Our idea is also well motivated by experimental results that so far have not been taken into account in the debate. (shrink)

Art theory has consistently emphasised the importance of situational, cultural, institutional and historical factors in viewers’ experience of fine art. However, the link between this heavily context-dependent interpretation and the workings of the mind is often left unexamined. Drawing on relevance theory—a prominent, cogent and productive body of work in cognitive pragmatics—we here argue that fine art achieves its effects by prompting the use of cognitive processes that are more commonly employed in the interpretation of words and other stimuli presented (...) in a communicative context. We describe in particular how institutional factors effectively co-opt these processes for new ends, allowing viewers to achieve cognitive effects that they otherwise would not, and so provide cognitivist backing for an Institutional Theory of Art, such as that put forward by Arthur Danto. More generally, we situate and describe the Western fine art tradition as a phenomenon that is a consequence of both the cognitive processes involved in communication, and of cultural norms, practices and institutions. (shrink)

This is an anthology of new papers by top researchers in epistemology and philosophy of mind focused on the epistemology of non-visual perception. The focus of the volume is to highlight the many different domains in which non-visual sensory experience, broadly construed to include multimodal experience associated with emotional and agential perception, plays a rational role, for instance, as an immediate justifier of belief. -/- .

Johnston famously argued that the colors are, more or less inclusively speaking, dispositions to cause color experiences by arguing that this view best accommodates his five proposed core beliefs about color. Since then, Campbell, Kalderon, Gert, Benbaji, and others, have all engaged with at least some of Johnston’s proposed core beliefs in one way or another. Which propositions are core beliefs is ultimately an empirical matter. We investigate whether Johnston’s proposed core beliefs are, in fact, believed by assessing the agreement/disagreement (...) of non-philosophers with them. Two experiments are run each with large sample sizes, the second designed to address criticisms of the first. We find that non-philosophers mostly agree with the proposed core beliefs, but that they agree with some more than others. (shrink)

This article establishes a connection between the novel, as a cultural artefact which encourages the exploration of inner perceptions, literary reading, and recent research into interoception in cognitive psychology. Interoception is broadly conceived here, ranging from physical states (like pulse, breathing rate, etc.) to emotions and the conscious perception of these physical states. The article identifies relevant interoceptive mechanisms in literary reading and develops a research programme for their empirical study. It unfolds an account of the relationship between interoception and (...) exteroception, as well as critical concepts to capture how readers' interoception aligns with the embodied signature of the text ('interoceptive attunement') and how the text offers points of re-entry after readers' remindings ('interoceptive anchors'). The article closes with a discussion of the role of interoception in the investigation of mindfulness meditation, and how this might enable an empirical comparison between the two cultural practices of mindfulness meditation and literary reading. (shrink)

Are those judgments that we make on the basis of our memories immune to error through misidentification? In this paper, I discuss a phenomenon which seems to suggest that they are not; the phenomenon of observer memory. I argue that observer memories fail to show that memory judgments are not IEM. However, the discussion of observer memories will reveal an interesting fact about the perspectivity of memory; a fact that puts us on the right path towards explaining why memory judgments (...) are indeed IEM. The main tenet in the account of IEM to be proposed is that this aspect of memory is grounded, on the one hand, on the intentionality of perception and, on the other hand, on the relation between the intentionality of perception and that of memory. (shrink)

This article presents two learning processes in order to explain how children at an early age can transform a complex sensory input to concepts and categories. The first process constructs the perceptual structures that emerge in children’s cognitive development by detecting invariants in the sensory input. The invariant structures involve a reduction in dimensionality of the sensory information. It is argued that this process generates the primary domains of space, objects and actions and that these domains can be represented as (...) conceptual spaces. Once the primary domains have been established, the second process utilizes covariances between different dimensions of the domains in order to identify natural clusters of entities. The clusters are then are used to determine concepts as regions in the spaces. As an application, the processes are used to resolve the so-called ‘complex first paradox’ that emerges from the fact that children, in general, learn nouns earlier than adjectives, even though nouns are semantically more complex than adjectives. (shrink)

A strong claim, often found in the literature, is that it is impossible to categorize perceptual properties unless one possesses the related concepts. The evidence from visual perception reviewed in this paper however questions this claim: Concepts, at least canonically defined, are ill-suited to explain perceptual categorisation, which is a fast, and crucially a largely involuntary and unconscious process, which rests on quickly updated probabilistic calculations. I suggest here that perceptual categorisation rests on non-conceptual sorting principles. This changes the claim (...) that categorisation cannot occur without concepts: It does not preclude that the concepts remain necessary for categorisation, but opens the possibility that they are not and that those sorting principles could be here sufficient. (shrink)

This article explores the cultural contexts in which three-dimensional imaging has been developed, disseminated and used. It surveys the diverse technologies and intellectual domains that have contributed to spatial imaging, and argues that it is an important example of an interdisciplinary subject. Over the past century-and-a-half, specialists from distinct fields have devised explanations and systems for the experience of 3-D imagery. Successive audiences have found these visual experiences compelling, adapting quickly to new technical possibilities and seeking new ones. These complementary (...) interests, and their distinct perspectives, have co-evolved in lock-step. A driver for this evolution is visual culture, which has grown to value and demand the spectacular. As a result, professional and popular engagements with 3-D have had periods of both popularity and indifference, and cultural consensus has proven to be ephemeral. (shrink)

In a masked priming experimental paradigm, we studied a possible subliminal perception effect on a semantic selection task. To gauge the degree to which subjects solved the SST consciously, they subsequently reported their level of confidence of having made a correct response. This was done on each trial, and the subjects used individually constructed category rating scales to do so, in order to achieve a more sensitive measurement of which trials were influenced by conscious processes. During the construction of these (...) individual rating scales, subjects verbally reported their experiences after each trial. The present study failed to find evidence of performance above chance level when subjects themselves reported to be at chance level. In fact, performance closely covaried with subjects' confidence ratings. About half of the subjects reported they would sometimes experience a 'feeling of knowing' the correct response to the SST, despite being unaware of the specific identity of the prime. From this, we observe the methodological point that in order to demonstrate subliminal perception in a masked priming paradigm with a semantic selection task it is not enough to demonstrate a lack of conscious visual perception of the prime, since a vague, yet conscious, FOK experience can be used by subjects to solve the task. (shrink)

ABSTRACTI defend the view that aspect-perception – seeing as a duck, or a face as courageous – typically involves concept-application. Seemingly obvious, this is contested by Avner Baz: ‘aspects ma...

Predictive processing is often presented as a unifying framework for perception, action, and cognition, being able to explain most mental phenomena : with regard to perception, the brain harbours a generative model issuing top-down expectations that are matched against bottom-up sensory feedback. Mismatches lead to error messages and model updates until the brain is 'getting it right'. The core notion of prediction error minimization commits the framework to a specification of accuracy conditions. We therefore turn to issues related to the (...) determination of satisfaction conditions discussed in the philosophy of perception. In particular, we rely on work by Recanati who shows that the accuracy conditions of perceptual content are partly determined by the intentional mode and the perceiver. It is important to notice that the self can enter the specification of accuracy conditions in two ways, namely as subject or as object. Even if we do not perceive ourselves explicitly as an object, we always implicitly represent ourselves as subject. We discuss whether and how these two ways of self-representation can be respected in the predictive processing framework. (shrink)

The attention schema theory provides a single coherent framework for understanding three seemingly unrelated phenomena. The first is our ability to control our own attention through predictive modelling. The second is a fundamental part of social cognition, or theory of mind — our ability to reconstruct the attention of others, and to use that model of attention to help make behavioural predictions about others. The third is our claim to have a subjective consciousness -- not merely information inside us, but (...) something else in addition that is non-physical -- and to believe that others have the same property. In the attention schema theory, all three phenomena stem from the same source. The brain constructs a useful internal model of attention. This article summarizes the theory and discusses one aspect of it in greater detail: how an attention schema may be useful for predicting the behaviour of others. The article outlines a hypothetical, artificial system that can make time-varying behavioural predictions about other people, and concludes that attributing some form of awareness to others is a useful computational part of the prediction engine. (shrink)

This paper outlines a representational framework for an import theory of selfhood and consciousness. Import theory posits that selfhood and consciousness are first perceived and understood in others and then imported from others to self. The theory raises three major claims: conscious awareness builds on self-representation; selfhood is a social, not a natural, kind; selfhood is imported from others to self. The paper focuses on the third claim and discusses mechanisms for import from others to self. While export theories offer (...) a number of mechanisms to account for the putative transition from self to others, import theories have so far not much to offer for the putative transition in the reverse direction. A framework is outlined to close this gap. Key to the framework is the notion of action matching. This term addresses dyadic interactions for perception/action matching, that is, matching perception of foreign action to production of own action, and vice versa. The framework specifies both representational resources and social practices on which self-import through action matching is claimed to rely. A final commentary compares export and import theories in terms of explanatory power, claiming that import theories can explain key features of consciousness that export theories can only invoke. (shrink)

This paper addresses the problem of intermodal perception, that of how warranted perception arises of objects having characteristics in multiple sense modalities. It first shows the inadequacy of the currently popular explanations of such perception in terms of special, innate mechanisms. It proposes instead a phenomenological account in terms of an infant's general capacities for observation and thought. To this end it prepares the terrain with brief investigations into four topics: spontaneity, non-symbolic thinking, the role of spontaneity in perception, and (...) the lived body. It then traces how an infant may, through spontaneous observations of invariable co-presence and sequence, integrate tactile objects, then tastes, smells, and sounds, and finally, with the help from topological and dynamic congruence, visual objects into a single world with the lived body as centre of orientation. (shrink)

Walter Freeman was a pioneer of novel and viable enquiries to understand our brains and minds, without much concern about whether or not his points of view matched established mainstream positions. Alongside his successful career as a neurobiologist, he was curious and forceful enough to pick up and work with ideas, concepts, and tools from areas as diverse as medieval philosophy, phenomenology, nonlinear dynamics, and even quantum field theory. These fields of knowledge, scattered as they appear on the surface, all (...) come together in two essential convictions in Walter's work: a proper science of the brain needs to take seriously brain activity at all levels, specifically including its large-scale dynamics -- against an overly reductive 'neuron doctrine', and perception and action are intrinsically coupled in a recursive way, an 'action-perception cycle' -- against purely representational accounts of mental activity. (shrink)

Walter Freeman established a unique approach for interpreting brain processes, perception, cognition, and intentionality. Freeman's neurodynamics approach evokes the concepts of mass action and synchrony in neural populations, and even today is far ahead of the field of dynamical systems in hierarchical brain models. He summarized the essence of his views on the physiology of perception in a landmark paper on the pages of Scientific American in 1991. He spelled out the main components of his neurodynamics theory in that essay, (...) which became a classic in brain theory and cognition. His approach has been hailed by many and attracted a large number of scientists all over the world. At the same time there were fellow scientists who objected to Freeman's approach and dismissed its basic tenets. This love or hate relationship followed Freeman until his death in his home in Berkeley, on 24 April 2016. In the present contribution we review the progress of Freeman's theory of neurodynamics over the past 25 years. We describe his work in light of new developments in experimental and theoretical approaches to brain dynamics, establishing new directions in computational neuroscience, cognitive monitoring, computational and mathematical modelling, field theories of cognition and intelligence, and his quest towards inventing novel engineering applications. (shrink)

Walter Freeman was a wonderful person and a brilliant scientist. He had a profound understanding of neurophysiology, and beautifully designed experiments on the olfactory bulb of rodents. Though my point of departure was quite different, based on an interdisciplinary approach to complex systems, there was a remarkable convergence of our ideas on the way brains work.

Freeman's studies on the physiology of the mammalian olfactory system were based on his characterization of activity of neural masses, based on a sigmoid relationship at the mesoscopic scale between population spiking activity as a result of continuous inputs. His early development of computational models to describe oscillatory responses of neural masses allowed him to predict physiological and anatomical properties, some of which required decades of research to be confirmed. His models of neural masses therefore allow us to link between (...) basic physiology and cognitive processes. Through the study of brain physiology at the mesoscopic level, we can understand how internally generated meaning-based responses to sensory input become action and how action leads to perception. (shrink)

For over a century and certainly since single-unit recordings in the 1960s the theory of perception that has dominated thinking and research, with implications for the understanding of all other cognitive domains, entails a neocortical process of progressive assembly from V-1 to V-4 leading to object-construction and secondary spatial updating and recognition. In recent years, however, difficulties with the theory have emerged in neurophysiological research though a compelling alternative has not been forcefully argued. It is the purpose of this paper (...) to review the main features of the microgenetic account of perception, which inverts standard theory 180 degrees, and aligns the perceptual process with patterns of evolutionary growth. This theory developed on clinical study, and perhaps for this reason has not received sufficient attention, in mainstream cognitive and affective neuroscience, though it provides an account not only of perception but of stages in memory, imagery, the present moment, and the mind/brain state. (shrink)

Degenaar and Keijzer claim that workspace theories and sensorimotor theories are complementary rather than competitive, so their combination has higher explanatory power than either approach on its own. I focus on the global workspace theory developed by Baars and the sensorimotor theory developed by O'Regan and Noe. The first theory analyses how consciousness emerges from dynamic interactions between unconscious processes. The second theory emphasizes the organism-world interaction, out of which conscious experience arises. I argue that the two theories may be (...) combined together with predictive processing in its version developed by Clark. The predictive processing framework explains processes that underlie conscious and unconscious experience on a more fine-grained level than sensorimotor theory. Likewise, conscious processes on the highest level in the multi-level structure accounted for by predictive processing may be identified with the global workspace. (shrink)

It has been argued that if dreams are genuine conscious experiences that are constituted solely by neural processes, then sensorimotor enactivism cannot pass as a general theory of consciousness. However, the existence of brain-bound dreams would not eliminate the possibility of sensorimotor enactivism being true about veridical perceptual experiences. Nevertheless, it can be argued that the existence of brain-bound dreams would undermine the main motivation and weaken the explanatory appeal of sensorimotor enactivism about perceptual experiences. For if dreams are fully (...) brain-bound then it cannot be the case that brains are incapable of generating the phenomenal features that are explanatorily relevant for sensorimotor enactivists. Hence it remains a plausible hypothesis -- regardless of all the apparent explanatory success of sensorimotor enactivism --- that a future brain-bound account of dreams entails also an illuminating brain-bound account of perceptual experiences. (shrink)

Deja reve has been hypothesized as a cause for various forms of déjà experience. With deja reve one has the distinct impression that the uncanny familiarity one is sensing has come from a preceding dream, but one not usually remembered until the experience is taking place. In this exploratory investigation, 2,492 respondents filled out online questionnaires in which they were queried about the incidence of their deja reve experiences, about dream frequency, and about their attitudes to dreams. The Big Five (...) personality factors were also measured using a separate, standardized questionnaire. Nearly 80% claimed to have had such experiences and the associated frequencies are presented. Age was negatively correlated with the incidence and there was little gender dependence. The results of the Big Five personality factors are also presented. Suggestions are made for future research. (shrink)

In debates in philosophy and cognitive science concerning short-term memory mechanisms and perceptual experience, most discussion has focused on the working memory and the various forms of sensory memory such as iconic memory. In this paper, I present a summary of some evidence for a proposed further form of memory termed conceptual short-term memory. I go on to outline some of the ways in which this additional distinctive sort of short-term memory might be of relevance to ongoing philosophical debates, specifically (...) in relation to questions about high-level perceptual phenomenology, the relationship between consciousness and reportability, and the boundary between cognition and perception. I conclude that conceptual short-term memory offers a promising new direction of research and philosophical investigation. (shrink)

One influential philosophical account of desire treats it as a species of propositional attitude, possessing broadly the same kinds of content as belief while differing in direction of fit. However, this arguably neglects more basic forms of desire. It seems an open possibility, for example, that animals that lack propositional attitudes might still have simple desires mediated by sensations like hunger and thirst. In this essay, I will argue the case for the existence of these basic desires, and suggest a (...) strategy for understanding them. I begin by briefly discussing some different approaches to the psychological ascription of desires, and examine some candidate forms of behaviour that might be constitutive of a creature's having a basic desire. I go on to argue that a form of behaviour known as motivational trade-off offers a particularly promising framework for attributions of basic desire. (shrink)

The experience of controlling events in the external world through voluntary action-- the sense of agency -- is a subtle but pervasive feature of human mental life and a constituent part of the sense of self. However, instead of reflecting an actual connection between conscious thoughts and subsequent outcomes, SoA may be an illusion. Whether this experience is an illusion, indicating no actual causal connection between conscious intention and physical outcome in the world, has been the focus of intense philosophical (...) and scientific debate since the beginnings of these fields of enquiry. More recently, the fields of experimental psychology and cognitive neuroscience have begun to identify specific antecedents of the experience of agency -- whether veridical or not. Similar to the perception of causality, which depends on the temporal structure of the events, humans' experience of their agency is very sensitive to the temporal interval separating bodily actions from the external effects of those actions. Accordingly, just as studies on perception of causality in the outside world have paid much attention to the temporal configuration of events, many contemporary studies have also focused on the contribution of the temporal organization of events giving rise to SoA, and in turn how experienced agency might influence subjective time. Here, I review existing evidence suggesting that subjective time both influences and is influenced by perceived causality in general, and experienced agency in particular. Finally, I briefly speculate that these findings may support predictive coding theories of cognition and perception. (shrink)