It is often assumed that when we see common opaque objects in standard light this is in virtue of seeing their facing surfaces. Here I argue that we should reject that claim. Either we don't see objects' facing surfaces, or—if we hold on to the claim that we do see such things—it is at least not in virtue of seeing them that we see common opaque objects. I end by showing how this conclusion squares both with our intuitions and with (...) the facts of vision science. (shrink)

La question posée dans cet article est de savoir dans quelle mesure et selon quels schémas il est possible de parler de la vision sensible comme d’une représentation psychique avant la nouvelle optique inaugurée par Johannes Kepler dans ses célèbres Paralipomena ad Vitellionem (1604). L’article part du point de vue suivant : c’est seulement à l’intérieur de ce nouveau paradigme, qui dissocie le processus physique de la vision de son traitement psychique, qu’il serait légitime de parler de la vision comme (...) une construction mentale, comme une représentation. En examinant cette question à la lumière de plusieurs théories anciennes et médiévales, l’article aboutit à une conclusion différente. C’est depuis Aristote que la question de la vision comme représentation mentale est posée, du fait de la fonction majeure qui est conférée aux sens internes (phantasia, sens commun) dans l’élaboration du contenu de perception, et certaines théories sous influence néo-platonicienne, comme celles d’Augustin ou Avicenne, conçoivent clairement la vision directe comme une représentation psychique. Dans les Paralipomena ad Vitellionem, Kepler sépare l’optique comme science physique de la lumière de la psychologie de la perception ; mais cette dernière a déjà une longue histoire, tout comme l’idée de la vision comme représentation mentale. (shrink)

In this paper, I take up the conciliatory-steadfast debate occurring within social epistemology in regards to the phenomenon of peer disagreement. I will argue, because the conciliatory perspective al-lows us to understand argumentation pragmatically—as a method of problem-solving within a community rather than as a method for obtaining the truth—that in most cases, we should not simply agree to disagree.

Une anthologie de textes de philosophes, de théoriciens et d'historiens de l'art (Boehm, Mondzain, Nancy, Coccia, Alloa, Belting, Bredekamp, Mitchell, Rancière, Didi-Huberman) qui témoignent à la fois de l'incidence de la question de l'image, de sa logique spécifique et de la transformation du champ visuel dans les savoirs contemporains, et de la variété de ses approches conceptuelles, de la préhistoire à nos jours et dans différentes traditions de pensée. Qu'est-ce qu'une image ? La multiplication proliférante des images semble bien – (...) et c'est là son paradoxe – inversement proportionnelle à notre faculté de dire ce qu'est réellement une image. Si notre interaction quotidienne avec les écrans a fait disparaître certaines peurs archaïques quant au pouvoir perturbateur des images, cette normalisation des rapports fait elle-même écran à une confrontation réelle avec l'efficace des images. Prenant acte du fait que l'image n'est pas structurée comme un langage, cet ouvrage se fait le témoin des débats actuels autour des logiques imaginales, notamment les Bildwissenschaften allemandes ainsi que les visual studies aux Etats-Unis. Que ce soit à partir d'une perspective contemporaine ou encore depuis une position délibérément anachronique, les différents essais forment ensemble un arsenal conceptuel permettant d'affronter de façon nouvelle la question de l'image et de son efficace. (shrink)

Wittgenstein a abondamment critique l'idee qu'il serait necessaire d'admettre l'existence d'un medium spatial alternatif ( l'espace visuel) pour rendre compte des differentes applications possibles de nos concepts geometriques et spatiaux. Notre objectif ici est de montrer la pertinence de cette critique. Pour ce faire, nous proposons une relecture des remarques qu'il consacre aux exemples visuels d'analyse dans les Carnets, aux aspects spatiaux de la theorie de l'image dans le Tractatus, a son propre projet phenomenologique de description de l'experience visuelle en (...) 1929, ainsi qu'a la maniere, philosophiquement fallacieuse, de poser le probleme de l'application en termes d'interpretations semantiques. (shrink)

Versuche zur Bestimmung der Abhängigkeit der Unterschiedsschwelle einer geometrischen Grössendimension von der Intensität bei verschiedener schwacher, nahe der absoluten Intensitätsschwelle liegender Lichter. Im Gegensatz zu den komplizierten Formeln, die die Abhängigkeit bei höheren Lichtintensitäten dargeben, gilt nahe der Minimalschwelle der Intensität ein bilinearer Ausdruck der Invarianz des Produkts der Reizunterschiedsschwelle der Grössendimension und der Lichtintensität . Die Bedeutung des Befundes im Zusammenhang mit früheren ähnlichen Ergebnissen wird besprochen.Experiments on determination of the difference threshold of visual size using different, weak (...) lights, near the absolute intensity threshold, are presented. Contrary to the complicated formulae obtained when the light is bright, near the minimal intensity threshold a simple bilinear equation holds true: the product of the stimulus threshold of visual size and the intensity threshold is found to be invariant. The significance of the findings are discussed in connection with similar, previous results.Des expériences pour déterminer le seuil spatial différentiel , en utilisant différentes lumières faibles, à la limite du seuil de l'intensité absolue, sont exposées. Contrairement aux formules compliquées qu'onn obtient avec des lumières intenses, près du seuil minime de l'intensité, une simple expression bilinéaire est valable: le produit du seuil spatial et du seuil de l'intensité est invariable. La signification de ce fait est discutée, en même temps que des résultats analogues antérieurs. (shrink)

The main aim of the paper is to define trade mark and to indicate varied semiotic functions which it fulfils. We define trade mark as a product of man used on the market to identify products or services of a certain firm or to distinguish products or services of a certain firm from those of other firms. All trade marks fulfil an identificative or differentional function. We distinguish trade mark from trade name: the trade name becomes a trade mark iff (...) it has such-and-such a specified visual form. We claim that trade name is a proper name which refers to a certain firm and has no connotation. Trade mark in advertising (1) refers to particular products or services and (2) connotates the product’s (service’s) property being produced or distributed by a particular firm. The trade mark placed on the package of some product is both: (1) an index sign, which “points to” the fact that the object in the package is produced or distributed by such-and-such a firm and (2) a performative (a sign which generates a new state of affairs), which certifies that the object in the package is produced or distributed by such-and-such a firm. (shrink)

Tout le trajet de la pensée de Merleau-Ponty est traversé – en certains cas de manière plus évidente que d’autres – par ce que je propose de définir comme une idée de la littérature et de la philosophie en tant que dispositifs de vision, pour utiliser une expression qui est née – et ce n’est pas un hasard – dans le domaine des études cinématographiques. Plus précisément, je voudrais montrer que Merleau-Ponty voit la littérature et la philosophie de son époque (...) opérer comme des dispositifs de vision convergents, vision qui est à considérer, à son tour, comme une pratique corporelle et pas seulement oculaire. Cela dit, il faut souligner que de tels dispositifs visuels convergents ont la particularité de fonctionner avec les mots, et que Merleau-Ponty met l’accent sur leur différente efficacité à exprimer son époque. De plus, je pense que l’idée implicite de la philosophie en tant que dispositif de vision opérant par des mots « comme toute la littérature » a une place importante, mais pour l’instant pas assez développée, dans la dernière période de la pensée de Merleau-Ponty. En outre, je voudrais souligner qu’une telle perspective est cruciale aussi pour notre époque, bien que je crois qu’elle soit différente de celle de Merleau-Ponty. En effet, je pense que notre époque et celle de Merleau-Ponty sont toutes deux caractérisées par une tension entre l’importance croissante des images et la centralité traditionnelle du concept dans notre culture.The whole path of Merleau-Ponty’s thought is crossed – some times more evidently than others – by what I propose to qualify as the idea of literature and philosophy as visual apparatuses, to use an expression that was born – and not by chance – in the field of Film Studies. More precisely, I aim at asserting that Merleau-Ponty sees literature and philosophy working in his epoch as convergent apparatuses of vision, in turn understood as a bodily and not merely ocular practice. Immediately after that, I should specify that such convergent visual apparatuses peculiarly function by words, and that Merleau-Ponty stresses their different efficiency in expressing his epoch.Moreover, I think that the implicit idea of philosophy as a visual apparatus working by words “like all literature” has a particularly relevant but so far not consequently developed place in in the last period of Merleau-Ponty’s thought. Also, I would like to stress that such a perspective is crucial in our own time too, even though I consider it to be different from Merleau-Ponty’s. Indeed, I think that both our time and Merleau-Ponty’s are characterized by a tension between the increasing importance of images and the traditional centrality of the concept in our culture.L’intero percorso del pensiero di Merleau-Ponty è attraversato, in certi casi in modo più evidente, da quella che propongo di definire come un’idea di letteratura e di filosofia come dispositivi di visione, per usare un’espressione nata, non a caso, nell’ambito dei Film Studies. Più precisamente, vorrei mostrare come Merleau-Ponty concepisca la letteratura e la filosofia della sua epoca come dispositivi di visione convergenti, intesi come una pratica corporea e non già meramente ottica. Specificherò, poi, che tali dispositivi di visione convergenti operano attraverso la parola e che Merleau-Ponty sottolinea la loro diversa efficacia nell’esprimere la sua epoca. Ritengo inoltre che l’idea implicita di filosofia come dispositivo di visione che agisce tramite la parola, “come tutta la letteratura”, occupi un posto particolarmente decisivo, anche se non del tutto esplicitato, nell’ultimo periodo del pensiero di Merleau-Ponty. Vorrei poi mostrare come tale prospettiva si riveli cruciale anche nel nostro tempo, per quanto diverso rispetto a quello di Merleau-Ponty. Infatti, penso che tanto la nostra epoca quanto quella di Merleau-Ponty siano caratterizzate da una tensione tra l’importanza sempre crescente delle immagini e la tradizionale centralità riservata al concetto nella nostra cultura. (shrink)

En 1928, à la suite d’une « conversion » qui le tourne vers des « valeurs spirituelles de poésie », le poète Pierre Jean Jouve renie tous ses ouvrages antérieurs à 1925 et proclame le début d’une « vita nuova ». Désormais, son œuvre ne cessera de représenter cette « scène originaire » de mort et de résurrection, mise sous le signe d’une « imitation du Christ ». Parmi ces représentations, le phénix occupe une place plutôt discrète mais significative. L’article (...) examine les différentes occurrences du symbole du phénix dans l’œuvre de traduction, de roman et de poésie de l’auteur, et y reconnaît une figure de la représentation, en tant que celle-ci exige la mort de l’objet tout en lui donnant une nouvelle vie. Le phénix jouvien apparaît comme une figure de l’« accomplissement » de cette représentation, aux multiples sens du mot. Il la montre en train de s’accomplir, via le sacrifice du corps « visible » comme présidant à un amour éternellement « audible » dans les mots. Il la représente sous une forme « accomplie » dans la prostituée qui, objet d’un meurtre sacrificiel, prend la figure d’un gouffre, lieu où toute représentation s’abîme, mais où toute représentation trouve aussi son origine et sa condition de possibilité. Il permet enfin d’en entrevoir le terme : l’oiseau, qui représente l’essence amoureuse et sacrificielle de la poésie, est d’autant plus « près » d’incarner cette essence qu’il renonce à se montrer ; il s’effacera derrière la représentation du lieu où son mystère s’est manifesté. In 1928, as a result of his “conversion” which turns him to “spiritual values of poetry”, the French poet Pierre Jean Jouve repels all the works he wrote before 1925 and announces the beginning of a “vita nuova”. From now on, his œuvre will never stop representing this “primitive scene” of death and resurrection, interpreted as an “imitation of Christ”. Among these representations, the Phoenix is a discrete but significant image. The article examines the different places where the Phoenix symbol appears, in Jouve’s translations, novels and poetry. The bird appears as a symbol of representation, based upon the death of the object and giving it a new life. Jouve’s Phoenix is a figure of the “accomplishment” of this representation. It shows representation in statu nascendi, as a sacrifice of the “visual” corporal appearance in order to realize a life and a love “hearable” in words. It represents representation as “accomplished” in the image of the prostitute, who was killed in a sacrificial way, and takes the appearance of an abyss, where every representation stops, but where every representation also finds its origin and its possibility. It finally puts in perspective the end of representation: the bird which represents the “essence” of poetry—an essence of love and sacrifice—is imagined “near to essences and God”, and the nearer as it becomes invisible and stops showing itself; in one of the last poems, it disappears behind the representation of the place where its mystery has revealed itself. (shrink)

In old times the universe was centred round the earth and the man, whose fate was written in the stars. This rational unity of the universe disappeared, when the dome of the heaven broke down and the stars moved aimlessly in the space. The conception of a general space, serving as stage for all beings, remined untouched. This view is wrong. Than both visual space und tactual space are different for different subjects and move with them.A general permanent objective (...) room doesnot exist nor do independent objects. Their qualities are created by the sensory fields of subjects and vary with the subjects. Each subject lives in his special world filled with his special objects, important for the subject. These special worlds form real unities, that enable us to construct a new picture of Nature.Anciennement on croyait que la terre était le centre de l'univers et que le sort de l'homme était écrit dans les astres. Cette unité rationnelle de l'univers se perdit plus tard, une fois que la voûte céleste se fut fendue et que les étoiles semblèrent se mouvoir à travers l'espace dans un cours sans but. Cependant, la conception d'une espace unique et fixe, servant de scène à tous les êtres vivants continuait à se maintenir. Cette conception du monde est erronée, l'espace visuelle et l'espace tactile sont différentes par rapports aux sujets différents et se meuvent avec eux.Une espace unique et permanente n'existe pas plus que des objets indépendants. Leurs qualités sont créées par les champs sensoriels des sujets et varient avéc ceux-ci. Chaque sujet vit dans son propre monde, rempli d'objets spéciaux qui sont importants pour ce sujet spécial. Tous ces mondes spéciaux constituent des unités réelles qui nous permettent de nous faire une image nouvelle de la nature. (shrink)

Le traité (ou dialogue) « pythique » du platonicien Plutarque de Chéronée (Iier – IIe s. ap. J.-C.) intitulé Sur l’E de Delphes est consacré à l’élucidation de la signification de l’E (la cinquième lettre de l’alphabet grec) consacré à Apollon Pythien. Une des interprétations (d’inspiration pythagoricienne) est que cet E désigne le nombre cinq, le nombre de l’univers. Dans le cadre de l’exposé de cette interprétation est fait état de l’opinion « de certains » selon laquelle il existe une (...) correspondance entre les cinq sens et les cinq éléments. L’A. montre que les deux lignes où il est question de la vue (E 390b6-8) s’inspirent essentiellement de l’explication qu’en Timée 45b-d Platon donne du mécanisme de la vision en termes de mélange du feu pur émis par l’œil avec le feu pur extérieur qui produit la lumière du jour. L’extrême brièveté de ce résumé (empreint d’aristotélisme, l’élément associé à la vue étant ici l’éther considéré comme cinquième corps), d’un passage dans Platon offrant lui-même bon nombre de difficultés, explique que ces deux lignes énigmatiques n’aient jamais été bien comprises. Au passage, l’A. revient sur les notions d’homoiopatheia (d’homogénéité) et de summetria (de commensurabilité) en Timée 45b-d et 67c-e pour en proposer une interprétation qui souligne et éclaire d’un jour nouveau le caractère dynamique de l’explication platonicienne de la vision. Un Appendice donne un aperçu des différentes lectures d’E 390b6-8 depuis les premières éditions imprimées à la Renaissance jusqu’aux éditions critiques des 19e et 20e siècles. (shrink)

Un jeu subtil associant les dimensions visuelles, culturelles ou sociales s’établit entre l’utilisateur de la règle et son destinataire. L’étude des différentes méthodes employées met en lumière cette dynamique du discours juridique. Cette nécessité de spécifier les rôles, de montrer les visages multiples a pour vocation de rendre sensible et conscient le locuteur au pluralisme organisé dans le discours juridique. C’est dans la multiplicité que le discours peut s’avérer fragile, susceptible de rupture dans la compréhension de sens.

Visual thinking -- visual imagination or perception of diagrams and symbol arrays, and mental operations on them -- is omnipresent in mathematics. Is this visual thinking merely a psychological aid, facilitating grasp of what is gathered by other means? Or does it also have epistemological functions, as a means of discovery, understanding, and even proof? By examining the many kinds of visual representation in mathematics and the diverse ways in which they are used, Marcus Giaquinto argues (...) that visual thinking in mathematics is rarely just a superfluous aid; it usually has epistemological value, often as a means of discovery. Drawing from philosophical work on the nature of concepts and from empirical studies of visual perception, mental imagery, and numerical cognition, Giaquinto explores a major source of our grasp of mathematics, using examples from basic geometry, arithmetic, algebra, and real analysis. He shows how we can discern abstract general truths by means of specific images, how synthetic a priori knowledge is possible, and how visual means can help us grasp abstract structures. Visual Thinking in Mathematics reopens the investigation of earlier thinkers from Plato to Kant into the nature and epistemology of an individual's basic mathematical beliefs and abilities, in the new light shed by the maturing cognitive sciences. Clear and concise throughout, it will appeal to scholars and students of philosophy, mathematics, and psychology, as well as anyone with an interest in mathematical thinking. (shrink)

"Groundbreaking when first published in 1969, this book is now of even greater relevance to make the reader aware of the need to educate the visual sense, a ...

Examines the philosophy, psychology, and neuroscience behind visual experience. Chapters on attention, illusions, aftereffects, binocular rivalry, hemispheric differences, attentional blink, agnosias and other disorders. Particular attention paid to consciouseness. The systematic review of key topics and the multitude of perspectives make this book an ideal primary or ancillary text for graduate courses in perception, vision, consciousness, or philosophy of mind.

How should we characterize the functional role of conscious visual experience? In particular, how do the conscious contents of visual experience guide, bear upon, or otherwise inform our ongoing motor activities? According to an intuitive and (I shall argue) philosophically influential conception, the links are often quite direct. The contents of conscious visual experience, according to this conception, are typically active in the control and guidance of our fine-tuned, real-time engagements with the surrounding three-dimensional world. But this (...) idea (which I shall call the Assumption of Experience-Based Control) is hostage to empirical fortune. It is a hostage, moreover, whose safety is in serious doubt. Thus Milner and Goodale (1995) argue for a deep and abiding dissociation between the contents of conscious seeing, on the one hand, and the resources used for the on-line guidance of visuo-motor action, on the other. This ‘dual visual systems’ hypothesis, which finds many echoes in various other bodies of cognitive scientific research, poses a prima facie challenge to the Assumption of Experience-Based Control. More importantly, it provides (I shall argue) fuel for an alternative and philosophically suggestive account of the functional role of conscious visual experience. (shrink)

Our visual system can process information at both conscious and unconscious levels. Understanding the factors that control whether a stimulus reaches our awareness, and the fate of those stimuli that remain at an unconscious level, are the major challenges of brain science in the new millennium. Since its publication in 1984, Visual Masking has established itself as a classic text in the field of cognitive psychology. In the years since, there have been considerable advances in the cognitive neurosciences, (...) and a growth of interest in the topic of consciousness, and the time is ripe for a new edition of this text. Where most current approaches to the study of visual consciousness adopt a 'steady-state' view, the approach presented in this book explores its dynamic properties. This new edition uses the technique of visual masking to explore temporal aspects of conscious and unconscious processes down to a resolution in the millisecond range. The 'time slices' through conscious and unconscious vision revealed by the visual masking technique can shed light on both normal and abnormal operations in the brain. The main focus of this book is on the microgenesis of visual form and pattern perception - microgenesis referring to the processes occurring in the visual system from the time of stimulus presentation on the retinae to the time, a few hundred milliseconds later, of its registration at conscious or unconscious perceptual and behavioural levels. The book takes a highly integrative approach by presenting microgenesis within a broad context encompassing visuo-temporal phenomena, attention, and consciousness. (shrink)

I develop a theory of what we mean by the 'look' sentences that we use to describe our visual experiences, and on that basis develop a new adverbial theory of what it is to have a visual experience with a certain character.

Recent work in "embodied, embedded" cognitive science links mental contents to large-scale distributed effects: dynamic patterns implicating elements of (what are traditionally seen as) sensing, reasoning and acting. Central to this approach is an idea of biological cognition as profoundly "action-oriented" - geared not to the creation of rich, passive inner models of the world, but to the cheap and efficient production of real-world action in real-world context. A case in point is Hurley's (1998) account of the profound role of (...) motor output in fixing the contents of conscious visual awareness - an account that also emphasizes distributed vehicles and long-range dynamical loops. Such stories can seem dramatically opposed to accounts, such as Milner and Goodale (1995), that stress relatively local mechanisms and that posit firm divisions between processes of visual awareness and of visuomotor action. But such accounts, I argue, can be deeply complimentary and together illustrate an important lesson. The lesson is that cognition may be embodied and action-oriented in two distinct - but complimentary - ways. There is a way of being embodied and action-oriented that implies being closely geared to the fine-grained control of low level effectors (hands, arms, legs and so on). And there is a way of being embodied and action-oriented that implies being closely geared to gross motor intentions, current goals, and schematic motor plans. Human cognition, I suggest, is embodied and action-oriented in both these ways. But the neural systems involved, and the size and scope of the key dynamic loops, may be quite different in each case. (shrink)

One of the main limitations of natural language‐based approaches to meaning is that they do not incorporate multimodal representations the way humans do. In this study, we evaluate how well different kinds of models account for people's representations of both concrete and abstract concepts. The models we compare include unimodal distributional linguistic models as well as multimodal models which combine linguistic with perceptual or affective information. There are two types of linguistic models: those based on text corpora and those derived (...) from word association data. We present two new studies and a reanalysis of a series of previous studies. The studies demonstrate that both visual and affective multimodal models better capture behavior that reflects human representations than unimodal linguistic models. The size of the multimodal advantage depends on the nature of semantic representations involved, and it is especially pronounced for basic‐level concepts that belong to the same superordinate category. Additional visual and affective features improve the accuracy of linguistic models based on text corpora more than those based on word associations; this suggests systematic qualitative differences between what information is encoded in natural language versus what information is reflected in word associations. Altogether, our work presents new evidence that multimodal information is important for capturing both abstract and concrete words and that fully representing word meaning requires more than purely linguistic information. Implications for both embodied and distributional views of semantic representation are discussed. (shrink)

It has long been known that memory need not be a literal reproduction of the past but may be a constructive process. To say that memory is a constructive process is to say that the encoded content may differ from the retrieved content. At the same time, memory is bound by the authenticity constraint which states that the memory content must be true to the subject's original perception of reality. This paper addresses the question of how the constructive nature of (...) visual memory can be reconciled with the authenticity constraint. In what respect and to what extent may the content of a visual memory differ from the original perceptual state while still adequately reflecting the subject's original perception? (shrink)

This new edition uses the technique of visual masking to explore temporal aspects of conscious and unconscious processes down to a resolution in the...

I argue that we sometimes visually perceive the intentions of others. Just as we can see something as blue or as moving to the left, so too can we see someone as intending to evade detection or as aiming to traverse a physical obstacle. I consider the typical subject presented with the Heider and Simmel movie, a widely studied ‘animacy’ stimulus, and I argue that this subject mentally attributes proximal intentions to some of the objects in the movie. I further (...) argue that these attributions are unrevisable in a certain sense and that this result can be used to as part of an argument that these attributions are not post-perceptual thoughts. Finally, I suggest that if these attributions are visual experiences, and more particularly visual illusions, their unrevisability can be satisfyingly explained, by appealing to the mechanisms which underlie visual illusions more generally. (shrink)

In this book, Michael Madary examines visual experience, drawing on both phenomenological and empirical methods of investigation. He finds that these two approaches—careful, philosophical description of experience and the science of vision—independently converge on the same result: Visual perception is an ongoing process of anticipation and fulfillment. Madary first makes the case for the descriptive premise, arguing that the phenomenology of vision is best described as on ongoing process of anticipation and fulfillment. He discusses visual experience as (...) being perspectival, temporal, and indeterminate; considers the possibility of surprise when appearances do not change as we expect; and considers the content of visual anticipation. Madary then makes the case for the empirical premise, showing that there are strong empirical reasons to model vision using the general form of anticipation and fulfillment. He presents a range of evidence from perceptual psychology and neuroscience, and reinterprets evidence for the two-visual-systems hypothesis. Finally, he considers the relationship between visual perception and social cognition. An appendix discusses Husserlian phenomenology as it relates to the argument of the book. Madary argues that the fact that there is a convergence of historically distinct methodologies itself is an argument that supports his findings. With Visual Phenomenology, he creates an exchange between the humanities and the sciences that takes both methods of investigation seriously. (shrink)

Our aim is to point out some differences between verbal and visual arguments, promoting the rhetorical perspective of argumentation beyond the relevance of logic and pragmatics. In our view, if it is to be rational and successful, film as (visual) argumentation must be addressed to spectators who hold informed beliefs about the theme watched on the screen and the medium’s constraints and conventions. In our reflections to follow, we apply rhetorical analysis to film as a symbolic, human, and (...) communicative act that may sometimes be understood as a visually laid out argument. As a mixture of visual, auditory, and verbal stimuli, film demands active and complex interpretation and (re)construction. Our suggestion is to focus on five different but interrelated elements. The reconstruction and evaluation of the visual argument will be based on those elements, and the whole process will be one of visual argumentation. (shrink)

Many of Margaret Cavendish’s criticisms of Thomas Hobbes in the Philosophical Letters (1664) relate to the disorder and damage that she holds would result if Hobbesian pressure were the cause of visual perception. In this paper, I argue that her “two men” thought experiment in Letter IV is aimed at a different goal: to show the explanatory potency of her account. First, I connect Cavendish’s view of visual perception as “patterning” to the “two men” thought experiment in Letter (...) IV. Second, I provide a potential reply on Hobbes’s behalf that appeals to physiological differences between perceivers’ sense organs, drawing upon Hobbes’s optics in De homine. Third, I argue that such a reply would misunderstand Cavendish’s objective of showing the limited explanatory resources available in understanding visual perception as pressing when compared to her view of visual perception as patterning. (shrink)

This comprehensively updated and expanded revision of the successful second edition continues to provide detailed coverage of the ever-growing range of research topics in vision. In Part I, the treatment of visual physiology has been extensively revised with an updated account of retinal processing, a new section explaining the principles of spatial and temporal filtering which underlie discussions in later chapters, and an up-to-date account of the primate visual pathway. Part II contains four largely new chapters which cover (...) recent psychophysical evidence and computational model of early vision: edge detection, perceptual grouping, depth perception, and motion perception. The models discussed are extensively integrated with physiological evidence. All other chapters in Parts II, III, and IV have also been thoroughly updated. (shrink)

Much attention has recently been paid to the idea, which I label ‘External World Acquaintance’ (EWA), that the phenomenal character of perceptual experience is partially constituted by external features. One motivation for EWA which has received relatively little discussion is its alleged ability to help deal with the ‘Explanatory Gap’ (e.g. Fish 2008, 2009, Langsam 2011, Allen 2016). I provide a reformulation of this general line of thought, which makes clearer how and when EWA could help to explain the specific (...) phenomenal nature of visual experience. In particular, I argue that by focusing on the different kinds of perceptual actions that are available in the case of visual spatial vs. colour perception, we get a natural explanation for why we should expect the specific nature of colour phenomenology to remain less readily intelligible than the specific nature of visual spatial phenomenology. (shrink)

According to so-called “thin” views about the content of experience, we can only visually experience low-level features such as colour, shape, texture or motion. According to so-called “rich” views, we can also visually experience some high-level properties, such as being a pine tree or being threatening. One of the standard objections against rich views is that high-level properties can only be represented at the level of judgment. In this paper, I first challenge this objection by relying on some recent studies (...) in social vision. Secondly, I tackle a different but related issue, namely, the idea that, if the content of experience is rich, then perception is cognitively penetrable. Against this thesis, I argue that the very same criteria that help us vindicate the truly sensory nature of our rich experiences speak against their being cognitively penetrable. (shrink)

Through extensive training, experts acquire specialized knowledge and abilities. In this paper, I argue that experts also acquire specialized visual experiences. Specifically, I articulate and defend the account that experts enjoy visual experiences that represent gestalt properties through perceptual learning. I survey an array of empirical studies on face perception and perceptual expertise that support this account. I also look at studies on perceptual adaptation that some might argue present a problem for my account. I show how the (...) data are subject to an interpretation that is friendly to it. Last, I address two theoretical objections to the claim that visual experiences represent gestalt properties. (shrink)

I propose a new argument showing that conscious vision sometimes depends constitutively on conscious attention. I criticise traditional arguments for this constitutive connection, on the basis that they fail adequately to dissociate evidence about visual consciousness from evidence about attention. On the same basis, I criticise Ned Block's recent counterargument that conscious vision is independent of one sort of attention (‘cognitive access'). Block appears to achieve the dissociation only because he underestimates the indeterminacy of visual consciousness. I then (...) appeal to empirical work on the interaction between visual indeterminacy and attention, to argue for the constitutive connection. (shrink)

Visual Agnosia is a comprehensive and up-to-date review of disorders of higher vision that relates these disorders to current conceptions of higher vision from cognitive science, illuminating both the neuropsychological disorders and the nature of normal visual object recognition.Brain damage can lead to selective problems with visual perception, including visual agnosia the inability to recognize objects even though elementary visual functions remain unimpaired. Such disorders are relatively rare, yet they provide a window onto how the (...) normal brain might accomplish the complex task of vision. Visual Agnosia reviews a century of case studies of higher-level visual deficits following brain damage, places them in the general context of current neuroscience, and draws relevant conclusions about the organization of normal visual processing. It is unique in drawing on research in cognitive psychology, computational vision, visual neurophysiology, and neuropsychology to interpret the agnosias and draw inferences from them about visual object recognition.Following a historical account of agnosia research, Visual Agnosia offers a taxonomy of a wide range of agnosia syndromes, describing and interpreting the syndromes in terms of the latest theoretical models of visual processing and ultimately bringing them to bear as evidence on a variety of questions in the study of higher vision.Martha J. Farah is Associate Professor of Psychology at Carnegie Mellon University. Visual Agnosia is included in the Issues in Biology of Language and Cognition series, edited by John Marshall. (shrink)

It has often been assumed that when we use vision to become aware of an object or event in our surroundings, this must be accompanied by a corresponding visual experience (i.e., seeing). The studies reported here show that this assumption is incorrect. When observers view a sequence of displays alternating between an image of a scene and the same image changed in some way, they often feel (or sense) the change even though they have no visual experience of (...) it. The subjective difference between sensing and seeing is mirrored in several behavioral differences, suggesting that these are two distinct modes of conscious visual perception. (shrink)

Visual analogy is believed to be important in human problem solving. Yet, there are few computational models of visual analogy. In this paper, we present a preliminary computational model of visual analogy in problem solving. The model is instantiated in a computer program, called Galatea, which uses a language for representing and transferring visual information called Privlan. We describe how the computational model can account for a small slice of a cognitive-historical analysis of Maxwell’s reasoning about (...) electromagnetism. (shrink)

First published in 1995, The Visual Brain in Action remains a seminal publication in the cognitive sciences. For this new edition, a very substantial and illustrated epilogue has been added to the book in which Milner and Goodale review the key developments that support or challenge the views that were put forward in the first edition.

How should we characterize the functional role of conscious visual experience? In particular, how do the conscious contents of visual experience guide, bear upon, or otherwise inform our ongoing motor activities? According to an intuitive and philosophically influential conception, the links are often quite direct. The contents of conscious visual experience, according to this conception, are typically active in the control and guidance of our fine-tuned, real-time engagements with the surrounding three-dimensional world. But this idea is hostage (...) to empirical fortune. It is a hostage, moreover, whose safety is in serious doubt. Thus Milner and Goodale argue for a deep and abiding dissociation between the contents of conscious seeing, on the one hand, and the resources used for the on-line guidance of visuo-motor action, on the other. This ‘dual visual systems’ hypothesis, which finds many echoes in various other bodies of cognitive scientific research, poses a prima facie challenge to the Assumption of Experience-Based Control. More importantly, it provides fuel for an alternative and philosophically suggestive account of the functional role of conscious visual experience. (shrink)

First published in 1995, The Visual Brain in Action remains a seminal publication in the cognitive sciences. It presents a model for understanding the visual processing underlying perception and action, proposing a broad distinction within the brain between two kinds of vision: conscious perception and unconscious 'online' vision. It argues that each kind of vision can occur quasi-independently of the other, and is separately handled by a quite different processing system. In the 11 years since publication, the book (...) has provoked considerable interest and debate - throughout both cognitive neuroscience and philosophy, while the field has continued to flourish and develop. -/- For this new edition, the text from the original edition has been left untouched, standing as a coherent statement of the authors' position. However, a very substantial epilogue has been added to the book in which Milner and Goodale review some of the key developments that support or challenge the views that were put forward in the first edition. The new chapter summarizes developments in various relevant areas of psychology, neuroscience and behaviour. It notably supplements the main text by updating the reader on the contributions that have emerged from the use of functional neuroimaging, which was in its infancy when the first edition was written. Neuroimaging, and functional MRI in particular, has revolutionized the field over the past 11 years by allowing investigators to plot in detail the patterns of activity within the visual brains of behaving and perceiving humans. The authors show how its use now allows scientists to test and confirm their proposals, based as they then were largely on evidence accrued from primate neuroscience in conjunction with studies of neurological patients. (shrink)

This paper argues that a theory of situated vision, suited for the dual purposes of object recognition and the control of action, will have to provide something more than a system that constructs a conceptual representation from visual stimuli: it will also need to provide a special kind of direct (preconceptual, unmediated) connection between elements of a visual representation and certain elements in the world. Like natural language demonstratives (such as `this' or `that') this direct connection allows entities (...) to be referred to without being categorized or conceptualized. Several reasons are given for why we need such a preconcep- tual mechanism which individuates and keeps track of several individual objects in the world. One is that early vision must pick out and compute the relation among several individual objects while ignoring their properties. Another is that incrementally computing and updating representations of a dynamic scene requires keeping track of token individuals despite changes in their properties or locations. It is then noted that a mechanism meeting these requirements has already been proposed in order to account for a number of disparate empiri- cal phenomena, including subitizing, search-subset selection and multiple object tracking (Pylyshyn et al., Canadian Journal of Experimental Psychology 48(2) (1994) 260). This mechanism, called a visual index or FINST, is brie. (shrink)

Argues for a category of “cognitive feelings”, which are representationally significant, but are not part of the content of the states they accompany. The feeling of pastness in episodic memory, of familiarity (missing in Capgras syndrome), and of motivation (that accompanies desire) are examples. The feeling of presence that accompanies normal visual states is due to such a cognitive feeling; the “two visual systems” are partially responsible for this feeling.

The oral eye is a metaphor for the dominance of global designer capitalism. It refers to the consumerism of a designer aesthetic by the 'I' of the neoliberalist subject, as well as the aural soundscapes that accompany the hegemony of the capturing attention through screen cultures. An attempt is made to articulate the historical emergence of such a synoptic machinic regime drawing on Badiou, Bellmer, Deleuze, Guattari, Lacan, Rancir̈e, Virilio, Ziarek, and Zizek to explore contemporary art (post-Situationism) and visual (...) cultural education. Jagodzinski develops the concept of an 'avant-garde without authority,' 'self-refleXion' and 'in(design)' to further the questions surrounding the posthuman as advanced by theorists such as Hansen, Stiegler and Ziarek's 'force' of art. (shrink)

Many philosophers have held that it is not possible to experience a spatial object, property, or relation except against the background of an intact awareness of a space that is somehow ‘absolute’. This paper challenges that claim, by analyzing in detail the case of a brain-damaged subject whose visual experiences seem to have violated this condition: spatial objects and properties were present in his visual experience, but space itself was not. I go on to suggest that phenomenological argumentation (...) can give us a kind of evidence about the nature of the mind even if this evidence is not absolutely incorrigible. (shrink)

Simulation Theory says we need not rely exclusively on prepositional knowledge of other minds in order to explain the actions of others. Seeking to know what you will do, I imagine myself in your situation, and see what decision I come up with. I argue that this conception of simulation naturally generalizes: various bits of our mental machine can be run‘off‐line’, fulfilling functions other than those they were made for. In particular, I suggest that visual imagery results when the (...) visual system is run off‐line. I briefly review the empirical evidence and consider the philosophical implications, particularly concerning the mode of mental representation in imagery. (shrink)

La, V. P., & Vuong, Q. H. (2019). bayesvl: Visually learning the graphical structure of Bayesian networks and performing MCMC with ‘Stan’. The Comprehensive R Archive Network (CRAN).

A set of visual search experiments tested the proposal that focused attention is needed to detect change. Displays were arrays of rectangles, with the target being the item that continually changed its orientation or contrast polarity. Five aspects of performance were examined: linearity of response, processing time, capacity, selectivity, and memory trace. Detection of change was found to be a self-terminating process requiring a time that increased linearly with the number of items in the display. Capacity for orientation was (...) found to be about 5 items, a value comparable to estimates of attentional capacity. Observers were able to filter out both static and dynamic variations in irrelevant properties. Analysis also indicated a memory for previously-attended locations. These results support the hypothesis that the process needed to detect change is much the same as the attentional process needed to detect complex static patterns. Interestingly, the features of orientation and polarity were found to be handled in somewhat different ways. Taken together, these results not only provide evidence that focused attention is needed to see change, but also show that change detection itself can provide new insights into the nature of attentional processing. (shrink)

Evidence from cognitive science supports the claim that humans and other animals see the world as divided into objects. Although this claim is widely accepted, it remains unclear whether the mechanisms of visual reference have representational content or are directly instantiated in the functional architecture. I put forward a version of the former approach that construes object files as icons for objects. This view is consistent with the evidence that motivates the architectural account, can respond to the key arguments (...) against representational accounts, and has explanatory advantages. I draw general lessons for the philosophy of perception and the naturalization of intentionality. (shrink)

Although the mechanics of how the eye works are well understood, debate still exists as to how the complex machinery of the brain interprets neural impulses...