In his Perception and Reason, Bill Brewer argues that one can only have empirical beliefs if one’s perceptual experiences serve as reasons for such beliefs. His argument for this idea relies on a premise according to which in order for the relations with perceptual experience to determine the contents of empirical beliefs, these relations must be reason-giving. He offers an argument for this premise, the so-called Switching Argument. In this paper, I show that the Switching Argument does not work, in (...) which case we have no reason to accept the premise the argument is supposed to establish, and hence no reason to accept Brewer’s argument in favour of the idea that one can only have empirical beliefs if one’s perceptual experiences serve as reasons for such beliefs. (shrink)

Les degrés et les formes de la vie pensante -- Théorie de la connaissance -- La perception -- L'imagination.

SENSATIONALISM 1 1. Introductory 1 2. Mach's Sensationalism 4 3. Developments of Sensationalism 22 II. THE INHERENT WEAKNESS OF SEN- SATIONALISM 25 1. The Point of Sensationalism 25 2. The Ambiguity of 'Sensation' 27 3. The Fundamental Conflict 35 4. Mistakes, Incorrigibility and Simplicity 40 III. DESCRIPTION 51 1. Describing and Descriptions 51 2. Describing in Terms of Sensations 67 IV. THE POSSIBILITY OF 'PURE' DES- CRIPTIONS 79 V. SCIENTIFIC PROBLEMS 99 VI. DESCRIPTIONS AND EXPLANATIONS 111 BIBLIOGRAPHY 142 INDEX 145 (...) -/- -v- . (shrink)

Visual conscious perception could be grounded in a nonconscious sensorimotor domain. Although invisible, information can be processed up to the level of response activation. Moreover, these nonconscious processes are modified by actual intentions. This notion bridges a gap in the theoretical framework of O'Regan & Noë.

Roy Sorensen’s adventure in Shadowland started with his prize-winning article, "Seeing Intersecting Eclipses" (published in The Journal of Philosophy, and chosen by the board of the Philosopher’s Annual as one of the ten best philosophy articles of 1999), which is the basis for the first two chapters in this book. The recipe adopted in that article is followed in most of the following thirteen chapters, five of them being based on Sorensen’s previous articles on the topic: start with an open (...) mind regarding the existence and causal efficacy of absences, shadows, i.e. absences of light, in our case, devise a riddle involving perception of such absences, and draw the consequences for the philosophy of perception and/or ontology. (shrink)

Critics of John McDowell’s Mind and World have by and large failed to take sufficient notice of the transcendental context within whichMcDowell situates his work—a failure that has adversely affected their criticisms. In this paper, I make clear this transcendental context and show how it figures in the transcendental argument I see McDowell offering in Mind and World. Interpreting McDowell’s argument in this way, I further argue, helps to answer some of the most pressing objections to what he is doing (...) in Mind and World, particularly certain objections made by Robert Brandom and Hilary Putnam. (shrink)

Failure to take note of distinctive attributes in the distal stimulus leads to an inadequate proximal encoding. Representation of similarities in Chorus suffers in this regard. Distinctive qualities may require additional complex representation (e.g., reference to linguistic terms) in order to facilitate discrimination. Additional semantic information, which configures proximal attributes, permits accurate identification of true veridical stimuli.

The problem of cortical integration is described and various proposed solutions, including grandmother cells, cell assemblies, feed-forward structures, RAAM and synchronization, are reviewed. One method, involving complex attractors, that has received little attention in the literature, is explained and developed. I call this binding through annexation. A simulation study is then presented which suggests ways in which complex attractors could underlie our capacity to reason. The paper ends with a discussion of the efficiency and biological plausibility of the proposals as (...) integration mechanisms for different regions and functions of the brain. (shrink)

The world perceived by a person undergoing vision without inversion of the retinal image has traditionally been described as inverted. Drawing on the philosophical work of Maurice Merleau-Ponty and the empirical research of Hubert Dolezal, I argue that this description is more reflective of a representationist conception of vision than of actual visual experience. The world initially perceived in vision without inversion of the retinal image is better described as lacking in lived significance rather than inverted; vision without inversion of (...) the retinal image affects the very content of the perceived world, including, importantly, its expressions and conducts, and not merely the orientation of this content. Moreover, I argue that the enactive approach, rather than a representationist approach, is best able to account for the perception of the world, after prolonged vision without inversion of the retinal image, as both normal and upright, yet still different from the world seen previously. Finally, in their attention to the perception of other people’s facial expressions, I argue that Merleau-Ponty and Dolezal draw out the existential significance of the enactive approach. In encountering another person, the most pressing task is generally not to observe this person’s features but, instead, to engage with this person’s expressions. (shrink)

Suppose that wc identify physical objccts, in thc first instance, by extension, as things like stones, tables, trees, people and other animals: the persisting macroscopic constituents of the world in which we live. Of course, there is a substantive question of what it is to be y such things in the way relevant to categorization as a physical object. So this can hardly be the final word on the matter. Still, it is equally clear that this gives us all a (...) perfectly respectable initial conception of what we are talking about; and it is an entirely adequate starting point for what follows. (shrink)

The question how to account for illusion has had a prominent role in shaping theories of perception throughout the history of philosophy. Prevailing philosophical wisdom today has it that phenomena of illusion force us to choose between the following two options. First, reject altogether the early modern empiricist idea that the core subjective character of perceptual experience is to be given simply by citing the object presented in that experience. Instead we must characterize perceptual experience entirely in terms of its (...) representational content. Second, retain the early modern idea that the core subjective character of experience is simply constituted by the identity of its direct objects, but admit that these must be mind-dependent entities, distinct from the mind-independent physical objects we all know and love. I argue here that the early modern empiricists had an indispensable insight. The idea that the core subjective character of perceptual experience is to be given simply by citing the object presented in that experience is more fundamental than any appeal to perceptual content, and can account for illusion, and indeed hallucination, without resorting to the problematic postulation of any such mind-dependent objects. (shrink)

Tyler Burge presents a substantial, original study of what it is for individuals to represent the physical world with the most primitive sort of objectivity. By reflecting on the science of perception and related psychological and biological sciences, he gives an account of constitutive conditions for perceiving the physical world, and thus aims to locate origins of representational mind. Origins of Objectivity illuminates several long-standing, central issues in philosophy, and provides a wide-ranging account of relations between human and animal psychologies.

A central preoccupation of philosophy in the twentieth century was to determine constitutive conditions under which accurate (objective) empirical representation of the macrophysical environment is possible. A view that dominated attitudes on this project maintained that an individual cannot empirically represent a physical subject matter as having specific physical characteristics unless the individual can represent some constitutive conditions under which such representation is possible. The version of this view that dominated the century's second half maintained that objective empirical representation of (...) the physical environment requires the individual to be able to supplement this representation with representation of general constitutive features of objectivity. This essay criticizes instances of this version in P. F. Strawson and Quine. It maintains that all versions of the position postulate conditions on objective empirical representation that are more intellectual than are warranted. Such views leave it doubtful that animals and human infants perceptually represent elements in the physical environment. By appeal to common sense and to empirical perceptual psychology, this essay argues that unaided perception yields objective representation of the macrophysical environment. It does so in prelinguistic animals, even in animals that almost surely lack propositional attitudes. The essay concludes with explications of nondeflationary conceptions of representation and perception. It distinguishes nonperceptual sensing from perceptual representation and explicates perceptual representation as a type of objective sensory representation. Objectivity is marked by perceptual constancies. Representation is marked by a nontrivial role for veridicality conditions in explanations of the relevant states. CiteULike Connotea Del.icio.us Digg Reddit Technorati What's this? (shrink)

Although appearances may deceive them, agents are capable of achieving their ends; this success is frequently explained by the fact that the agents may, for example, see a stick in water as bent without believing that it is actually bent. Although the notion of 'seeing as' is supposed to both bridge the gap between experience and action and explain our reaction to illusions, such accounts break down because of their exclusive focus on visual episodes and their tendency to interpret the (...) metaphysics of agency in a psychologistic fashion. This paper shows that 'seeing as' needs to be understood as a species of the genus 'taking as.' The genus admits a wider array of expression, in terms of the kinds of attitudes, actions, and epistemological statuses involved. Such an analysis allows us to avoid the problems of 'seeing as' accounts and deepens our understanding of the relationship between practical and theoretical reason. (shrink)

Pessoa et al. misinterpret some of Dennett's discussion of filling-in. Their argument against the representational conception of vision and for a Gibsonian alternative is also flawed.

Edward Wilson Averill By the phrase 'anthropocentric account of color' I mean an account of color that makes an assumption of the following form: two ...

A sensible quality is a perceptible property, a property that physical objects (or events) perceptually appear to have. Thus smells, tastes, colors and shapes are sensible qualities. An egg, for example, may smell rotten, taste sour, and look cream and round.1,2 The sensible qualities are not a miscellanous jumble—they form complex structures. Crimson, magenta, and chartreuse are not merely three different shades of color: the first two are more similar than either is to the third. Familiar color spaces or color (...) solids capture, to a greater or lesser extent, these relations between the colors. The same goes for sensible qualities perceived in other modalities: middle C, high C, and D are not merely three different notes, and the taste of lemons, oranges, and sugar cubes are not merely three different tastes. How can this structure of appearance be explained? One idea is that sensible qualities are of two sorts: basic and derived. The basic sensible qualities are the building blocks from which the derived sensible qualities can be.. (shrink)

Classic texts that define the disjunctivist theory of perception.

This essay surveys the varieties of disjunctivism about perceptual experience. Disjunctivism comes in two main flavours, metaphysical and epistemological.

Suppose your conscious life were surgically excised, but everything else left intact, what would you miss? In this situation you would not have the slightest idea what was going on. You would have no idea what there is in the world around you; what the grounds are of the potentialities and threats are that you are negotiating. Experience of your surroundings provides you with knowledge of what is there: with your initial base of knowledge of what the things are that (...) you are thinking and talking about. But this connection between consciousness of the objects and properties around you, and knowledge of the references of the basic terms you use, has proven difficult to articulate. The connection cannot be recognized so long as you think of consciousness as a kind of glow with which representations are accompanied or enlivened. It is, though, also possible to think of perceptual experience as fundamentally a relation between the subject and the things experienced; and given such a conception, we can make visible the link between consciousness and reference. (shrink)

Ir IS winmx HELD that the capacity for spatial thought depends upon the ability to refer to physical things. The argument is that the identification of places depends upon the identification of things; places in themselves are all very much alike and can be distinguished only by their spatial relations to things. So one could not so much as think about places unless one could think about things (Strawson, 1959). It has to be acknowledged that our identifications of places are (...) greatly enriched by our ability to refer to physical things. But, as we shall see, it is possible to identify places without identifying objects. 'Ihis raises the question whether there is any fundamental role that physical objects do play in our spatial thinking. I begin with the ways in which reference to physical objects enriches our capacity to identify places. We shall then consider whether reference to places as such demands reference to objects, and if not, what special role there might be for physical things in spatial thinking. A physical object has a certain causal structure. We can bring this out by reflecting on the way in which the properties of a physical thing affect its behaviour. Some of the properties of a thing just are propensities for it to behave in particular ways in particular circumstances. For example, being elastic, or brittle, are dispositional charac- 'teristics, they say that the thing will behave one way rather than another under pressure. But other properties of a thing, such as its size and.. (shrink)

The papers by Macpherson, O’Callaghan, and Batty reveal some startling differences in the objects and properties represented by different modalities. They also reveal some tensions between different ways of understanding what it is for any one modality to represent objects and properties.

This is an excerpt of a report that highlights and explores five questions that arose from the Network for Sensory Research workshop on perceptual learning and perceptual recognition at the University of York in March, 2012. This portion of the report explores the question: Can perceptual experience be modified by reason?

This is an excerpt of a report that highlights and explores five questions that arose from the Network for Sensory Research workshop on perceptual learning and perceptual recognition at the University of York in March, 2012. This portion of the report explores the question: How does perceptual learning alter perceptual phenomenology?

This is an excerpt of a report that highlights and explores five questions that arose from the Network for Sensory Research workshop on perceptual learning and perceptual recognition at the University of York in March, 2012. This portion of the report explores the question: How does perceptual learning alter the contents of perception?

This is an excerpt from a report that highlights and explores five questions which arose from the workshop on perceptual learning and perceptual recognition at the University of Toronto, Mississauga on May 10th and 11th, 2012. This excerpt explores the question: How can philosophers and psychologists most fruitfully collaborate?

This is an excerpt from a report that highlights and explores five questions which arose from the workshop on perceptual learning and perceptual recognition at the University of Toronto, Mississauga on May 10th and 11th, 2012. This excerpt explores the question: How should we demarcate perceptual learning from perceptual development?

This is an excerpt from a report that highlights and explores five questions which arose from the workshop on perceptual learning and perceptual recognition at the University of Toronto, Mississauga on May 10th and 11th, 2012. This excerpt explores the question: What are the origins of multimodal associations?

This is an excerpt from a report that highlights and explores five questions which arose from the workshop on perceptual learning and perceptual recognition at the University of Toronto, Mississauga on May 10th and 11th, 2012. This excerpt explores the question: Does our representation of time provide and amodal framework for multi-sensory integration?

This is an excerpt from a report that highlights and explores five questions which arose from the workshop on perceptual learning and perceptual recognition at the University of Toronto, Mississauga on May 10th and 11th, 2012. This excerpt explores the question: What counts as cognitive penetration?

This report highlights and explores five questions which arose from the workshop on perceptual learning and perceptual recognition at the University of Toronto, Mississauga on May 10th and 11th, 2012: 1. How should we demarcate perceptual learning from perceptual development? 2. What are the origins of multimodal associations? 3. Does our representation of time provide an amodal framework for multi-sensory integration? 4. What counts as cognitive penetration? 5. How can philosophers and psychologists most fruitfully collaborate?

This report highlights and explores five questions which arose from The Unity of Consciousness and Sensory Integration conference at Brown University in November of 2011: 1. What is the relationship between the unity of consciousness and sensory integration? 2. Are some of the basic units of consciousness multimodal? 3. How should we model the unity of consciousness? 4. Is the mechanism of sensory integration spatio-temporal? 5. How Should We Study Experience, Given Unity Relations?

Drawing upon the work of Merleau-Ponty, Borrett et al. (2000) have attempted to model the primordial, "empty heads turned towards the world." Putting the issue of embodiment aside for another day, they propose two separate models, one of movement and the other of perception. While I am sympathetic to the point of their project, I argue in this commentary that their models are insufficiently vague. The following analytic abstractions to which they commit themselves seem seriously at odds with the nature (...) of their task: action versus perception; vision versus the other senses; spatial properties versus, for example, colour and meaning; and 'a controller' versus the body and its environment. (shrink)

Heyes's proposed study for testing whether chimpanzees have a theory of mind is (1) too strong because it requires that the animals apply mental concepts to the interpretation of both their own experiences and the behaviours of others, and (2) too weak because dispositional rather than representational understanding of “seeing” is sufficient to pass it.

Evidence from aphasia is considered that leads to a distinction between abstract and concrete thought processes and hence for a distinction between rules and similarity. It is argued that perceptual classification is inherently a rule-following procedure and these rules are unable to be followed when a patient has difficulty with name comprehension and retrieval.

Although Barsalou is right in identifying the importance of perceptual symbols as a means of carrying certain kinds of content, he is wrong in playing down the inferential resources available to amodal symbols. I argue that the case for perceptual symbol systems amounts to a false dichotomy and that it is feasible to help oneself to both kinds of content as extreme ends on a content continuum. The continuum thesis I advance argues for the inferential content at one end and (...) perceptual content at the other. In between the extremes, symbols might have aspects that are either perceptual or propositional-linguistic in character. I argue that this way of characterising the issue preserves the good sense of Barsalou's recognition of perceptual representations and yet avoids the tendency to minimise the gains won with symbolic representations vital to contemporary cognitive science. (shrink)

Comparisons between modally and amodally completed regions show that perceptual filling-in is not merely the ignoring of absences. Illusory filled-in colour arises for modal completion, but not for amodal completion in comparable displays. We find that attention spreads automatically to modally but not amodally completed regions from their inducers, revealing a functional effect of filled-in colour.

It is common both in philosophy and in the cognitive sciences (broadly understood as ranging from, say, neuroscience to developmental or evolutionary psychology) to distinguish between two kinds of hallucinations.1 What differentiates them is whether they are subjectively indistinguishable from genuine perceptions and therefore mistaken by us for the latter. While perceptual (or ‘true’) hallucinations cannot, from the subject’s perspective, be told apart from perceptions, non-perceptual (or ‘pseudo’) hallucinations can and usually are. Sometimes, when subjects, say, auditorily hallucinate someone else (...) calling their name or commenting on their behaviour, they are able to realise, on the basis of how they subjectively experience their episode of hallucination, that they are not perceiving real speech: their hallucination is non-perceptual. This happens, for instance, when subjects suffering from schizophrenia or other illnesses hear ‘inner voices’ speaking to them. But in other circumstances, the subjects concerned are - even under conditions of proper mental health and rationality - in no position to recognise the hallucinatory status of their experience without the help of some external evidence: their hallucination is perceptual. Wrongly hearing the phone ringing while taking a shower, say, is a good example of this kind of hallucination.2 When philosophers speak or write about hallucinations, they usually concentrate on perceptual hallucinations. One reason for this is the fact that philosophers tend to address the topic of hallucination, not for its own sake, but only in the context of some wider issues. Thus, when they are discussing hallucinations, they are primarily interested in other topics, such a how - or whether - we are able to acquire knowledge about the external world, in which sense our mental states are directed at objects and properties, how best to account for what our experiences are subjectively like, which features suffice for something to count as a conscious experience, and so on.. (shrink)

Abstract: In Mind and World, McDowell conceives of the content of perceptual experiences as conceptual. This picture is supposed to provide a therapy for skepticism, by showing that empirical thinking is objectively and normatively constrained. The paper offers a reconstruction of McDowell's view and shows that the therapy fails. This claim is based on three arguments: 1) the identity conception of truth he exploits is unable to sustain the idea that perception-judgment transitions are normally truth conducing; 2) it could be (...) plausible only from an externalist point of view that is in tension with the view of normativity that motivates conceptualism; 3) the identity conception of truth is incompatible with McDowell's recent version of conceptualism in terms of ‘non-propositional intuitive contents’. (shrink)

To be a 'commonsense realist' is to hold that perceptual experience is (in general) an immediate awareness of mind-independent objects, and a source of direct knowledge of what such objects are like. Over the past few centuries this view has faced formidable challenges from epistemology, metaphysics, and, more recently, cognitive science. However, in recent years there has been renewed interest in it, due to new work on perceptual consciousness, objectivity, and causal understanding. This volume collects nineteen original essays by leading (...) philosophers and psychologists on these topics. Questions addressed include: What are the commitments of commonsense realism? Does it entail any particular view of the nature of perceptual experience, or any particular view of the epistemology of perceptual knowledge? Should we think of commonsense realism as a view held by some philosophers, or is there a sense in which we are pre-theoretically committed to commonsense realism in virtue of the experience we enjoy or the concepts we use or the explanations we give? Is commonsense realism defensible, and if so how, in the face of the formidable criticism it faces? Specific issues addressed in the philosophical essays include the status of causal requirements on perception, the causal role of perceptual experience, and the relation between objective perception and causal thinking. The scientific essays present a range of perspectives on the development, phylogenetic and ontogenetic, of the human adult conception of perception. (shrink)

If I remember something, I tend to believe that I have perceived it. Similarly, if I remember something, I tend to believe that it happened in the past. My aim here is to propose a notion of mnemonic contentaccounts for these facts. Certain proposals build perceptual experiences into the content of memories. I argue that they Have trouble with the second belief. Other proposals build references to temporal locations into mnemonic content. I argue that they have trouble with the second (...) one. I propose a notion of mnemonic Content that can account for the rationality of both beliefs. (shrink)

(No abstract is available for this citation).

Introduction: Three key principles -- Sense datum theories -- Adverbial theories -- Belief acquisition theories -- Intentional theories -- Disjunctive theories -- Perception and causation -- Perception and the sciences of the mind -- Perception and other sense modalities.

Book Information Perception. Perception Barry Maund , Chesham : Acumen Publishing , 2003 , 240 , £12.95 ( paper ) By Barry Maund. Acumen Publishing. Chesham. Pp. 240. £12.95 (paper:).

Shepard's analysis of how shape, motion, and color are perceptually represented can be generalized. Apparent motion and shape may be associated with a group of spatial transformations, accounting for rigid and plastic motion, and perceived object color may be associated with a group of illuminant transformations, accounting for the discriminability of surface-reflectance changes and illuminant changes beyond daylight. The phenomenological and mathematical parallels between these perceptual domains may indicate common organizational rules, rather than specific ecological adaptations. [Barlow; Hecht; Kubovy & (...) Epstein; Schwartz; Shepard; Todorovic]. (shrink)

This new heuristic model of perceptual analysis raises interesting issues but in the end falls short. Its arguments are more in the Cartesian than Gestalt tradition. Much of the argument is based on setting up theoretical straw men and ignores well known perceptual and brain science. Arguments are reviewed in light of known physiology and traditional Gestalt theory.

In Action in Perception, Alva Noë provides a persuasive account of the “enactive” approach to perception, according to which perception is not simply based on the processing of sensory information, or on the construction of internal representations, but is fundamentally shaped by the motor possibilities of the perceiving body. As John Dewey put it in 1896, in his essay, “The Reflex Arc Concept in Psychology”.

In the course of his discussion of perception, Searle criticizes representative theories in general. In this paper I will argue that, even though his criticisms may be adequate regarding a certain form of these theories, perhaps the most frequently defended by philosophers of perception, a version I will outline here escapes to them. A second issue I raise concerns Searle's claim that his theory of perception is a form of direct realism. I will raise difficulties for Searle's attempt to maintain (...) at the same time a "token-reflexive" theory of perception and the thesis of direct realism. (shrink)

To balance Kubovy & Epstein, I evaluate the relationship between Shepard and Gestalt theorists along three dimensions. First, both discover internal universals by reducing external support. Second, they share strengths and weaknesses of the minimum principle. Third, although their attitudes toward an evolutionary account of perception is superficially different, they are fundamentally similar with respect to the internalization process. [Kubovy & Epstein; Shepard].