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)

The integrated information theory equates levels of consciousness with the amount of information integrated over the elements that constitute a system. Conscious visual perception provides two observations that contradict the IIT. First, objects are accurately perceived when presented for ≪100 ms during which time no neural integration is possible. Second, an object is seen as an integrated whole and, concurrently, all constituent elements are evident. Because integration destroys information about details, IIT cannot account for perceptual detail preservation.

The global array may be a useful concept in studying behavior in a complex environment, especially in the context of dynamical systems theory. However, Stoffregen & Bardy's arguments are weakened by the conflation of sensation and perception, and by the lack of evidence for synergy between stimulus energy arrays; strong evidence places the convergence of sensory stimuli inside the head.

Aristotle did not view perception as a rudimentary reaction with little content as suggested by Plato, nor as the work of reason and thought as claimed by Strato. Perception is a half-way house between the two. This essay explores Aristotle’s redrawing of the map in which perception is located, and the formal and material causes of perception.

Though many philosophers of mind have taken an interest in the great developments in the brain sciences, the interest is seldom reciprocated by scientists, who frequently ignore the contributions philosophers have made to our understanding of the mind and brain. In a rare collaboration, a world famous brain scientist and an eminent philosopher have joined forces in an effort to understand how our brain interacts with the world. Does the brain behave as a calculator, combining sensory data before deciding how (...) to act? Or does it behave as an emulator endowed with innate models of the world, which it corrects according to the results of experiences obtained by the senses? The two authors come from very different backgrounds - the philosopher Jean-Luc Petit belongs to the philosophical tradition of Husserlian phenomenology. Alain Berthoz has long been interested in the physiology of action (movement, posture, decision-making, perception, etc.). Drawing on cutting-edge research from the cognitive sciences, the authors have produced a highly original volume showing how phenomenology and physiology can interact to further our understanding of the brain and the mind. (shrink)

In a rare collaboration, a world famous brain scientist and an eminent philosopher have joined forces in an effort to understand how our brain interacts with the world. This is a highly original volume showing how those within phenomenology and physiology can interact to further our understanding of the brain and the mind.

This paper addresses the visual culture of late-19th-century experimental physiology. Taking the case of Johann Nepomuk Czermak as a key example, it argues that images played a crucial role in acquiring experimental physiological skills. Czermak, Emil Du Bois-Reymond and other late-19th-century physiologists sought to present the achievements and perspective of their discipline by way of "immediate visual perception." However, the images they produced and presented for this purpose were strongly mediated. By means of specifically designed instruments, such as the (...) "cardioscope," the "contraction telegraph," and the "frog pistol," and of specifically constructed rooms, so-called "spectatoriums," physiologists trained and controlled the perception of their students before allowing them to conduct experiments on their own. Studying the material culture of physiological image production reveals that technological resources such as telegraphy, photography, and even railways contributed to making physiological facts anschaulich. At the same time, it shows that the more traditional image techniques of anatomy played an important role in physiological lecture halls, especially when it came to displaying the details of vivisection experiments to the public. Thus, the images of late 19th century physiology stood half-way between machines and organisms, between books and instruments. (shrink)

In a recent paper, I developed and introduced embodied Rilkean sport-specific knowledge into the current sports knowledge philosophical debate. The existence of embodied Rilkean sport-specific know...

The Perception-Action Model of empathy (PAM) is both sufficiently broad and sufficiently detailed to be able to describe and accommodate a wide range of phenomena – including the apparent “cold-heartedness” or lack of empathy of psychopaths. We show how the physiological, cognitive, and emotional elements of the PAM map onto known and hypothesized attributes of the psychopathic personality.

The main aim of our study was to determinate whether a repeated bout (RB) (vs. first bout [FB]) of sprint interval cycling exercise (SIE) is sufficient to mitigate SIE-induced psychological and physiological biomarker kinetics within 48 h after the exercise. Ten physically active men (age, 22.6 ± 5.2 years; VO2max, 44.3 ± 5.7 ml/kg/min) performed the FB of sprint interval cycling exercise (12 repeats of 5 s each) on one day and the RB 2 weeks later. The following parameters were (...) measured: motor performance (voluntary, electrically induced and isokinetic skeletal muscle contraction torque, and central activation ratio [CAR]); stress markers (BDNF, cortisol, norepinephrine, and epinephrine); inflammatory markers (IL-6, IL-10, and TNF-); metabolic markers (glucose and lactate); muscle and rectal temperature; cycling power output; and psychological perceptions. The average cycling power output and neuromuscular fatigue after exercise did not differ between the FB and RB. There were significant decreases in cortisol and BDNF concentration at 12 h (P < 0.05) and 24 h (P < 0.001) after the FB, respectively. The decrease in cortisol concentration observed 12 h after exercise was significantly greater after the RB (P < 0.05) than after the FB. The immune-metabolic response to the RB (vs. FB) SIE was suppressed and accompanied by lower psychological exertion. Most of the changes in psychological and physiological biomarkers in the FB and RB were closely related to the response kinetics of changes in BDNF concentration. (shrink)

In this work I reject the contention that there is a perceptual stage which is devoid of contributions from the agent's cognitive framework. This contention is expressed in two different noncognitive views of perception. The traditional sensory core view which has prevailed since the seventeenth century; it claims that there is a stage of pure sensory core which precedes the interpretive percepts . The recent ecological approach whose main representative is J. J. Gibson; it claims that not only a (...) certain perceptual stage, but the whole perceptual process, is devoid of cognitive contributions. Before I deal with these views, I discuss the basic features of cognition in general. ;Cognition is concerned with the establishment of relations and order; it is a purposive placing of a cognized object into a meaningful order. Cognition begins with modifying a given order for the purpose of making it fit into a given meaningful framework. Throughout the work I show that, contrary to the aforementioned noncognitive views, perception fulfills this depiction of cognition. ;In the discussion of the sensory core view, I illustrate its main assumptions in various philosophical writings, and then indicate main reasons for its appearance in the seventeenth century. These reasons stem from the intermediate role sensation was supposed to have in the mental-physical gap. Sensations were considered to be primitive mental entities with physical causes; their physical origin prevents them from containing complex mental features such as the cognitive ones, and, thus, they are regarded as pure. This stage of pure sensation was postulated primarily out of theoretical considerations. Those did not coincide with the empirical and phenomenological description of that stage; hence, the empirical characterization and the phenomenological status of that stage were constantly modified. The various suggestions for describing that stage are examined and criticized from both empirical and theoretical respects. The empirical evidence presented indicates that there is no qualitative difference between perceiving what is regarded as pure sensations and what is regarded as inferential perceptions. The theoretical criticism points out that the assumption regarding pure sensation is not necessary for an adequate explanation of perception; and, since it has no empirical grounds, it is superfluous. ;After rejecting the sensory core view, I examine the ecological approach. This view rejects the traditional sensation-perception distinction and contends that we do not have to assume the existence of cognitive activities that interpret meaningless sensations into meaningful perceptions, since the perceiver directly encounters meaningful features. I claim that this solution is similar to Kant's approach, and, therefore, it has to pay a price which is similar to that which Kant pays, viz. the relational nature of the perceptual environment. The neglect of this feature results in unsolvable difficulties in central notions of the ecological approach. ;I conclude the work by suggesting a crude outline for approaching perception; in many respects it is close to Aristotle's view. I contend that causal explanations of the physiological processes cannot wholly explain perceiving; these processes are necessary supportive bases for perceiving and not the causes which precede and produce it. Accordingly, we should not assume the existence of separate percepts in the agent's head. The cognitive system is an integral part of the perceptual system; hence, perception may be conceived of as direct understanding. (shrink)

Musical Perceptions is a much-needed text that introduces students of both music and psychology to the study of music perception and cognition. Because the book aims to foster a closer interaction between research in the science and the art of music, both psychologists and musicians contribute chapters on a wide range of topics, including the philosophy of music; research in musical performance; perception of melody, tonality, and rhythm; pedagogical issues; language and music; and neural networks. With their unique (...) ability to introduce musical and psychological concepts to first-time students in the area, Rita Aiello and John Sloboda have edited a volume that will be popular with undergraduate and graduate students taking courses in the perception, psychology, and aesthetics of music. They have prefaced each chapter with an introduction to the chapter's research. This book will also be useful to cognitive and physiological psychologists and music theorists interested in music perception. (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)

The doctrine of primary qualities is commonly explained as science's return to a former ideal of mathematical intelligibility and as a sacrifice of the notion that we can be certain about what we perceive. According to the standard chronicle modern scientific explanations appeal to geometrically intelligible, yet theoretically imperceptible, particles. This thesis gains plausibility only by suppressing the role of physiological optics in the development of modern science. Descartes presented an original and significant theory of scientific observation in his Dioptrics; (...) according to which, correct perceptual judgments can be made about the spatial qualities of any body, even about bodies so small as to be imperceptible under ordinary circumstances. This theory insured the perceptual accessibility of the spatial qualities of minute bodies but failed, as Locke discovered upon adding solidity to the list of primary qualities, to explain access to non-spatial qualities. As a result of the failure of Descartes' theory of perception to give an adequate account of scientific observation, Locke took the position that solidity or impenetrability cannot ordinarily be perceived, but rather that it can be and is regularly detected by experiment. This Lockean shift from direct perceivability of spatial qualities to the experimental detection of "new" primary qualities marks an important step in the methodological development of early modern science. (shrink)

Robert Brain traces the origins of artistic modernism to specific technologies of perception developed in late-nineteenth-century laboratories. Brain argues that the thriving fin-de-siècle field of “physiological aesthetics,” which sought physiological explanations for the capacity to appreciate beauty and art, changed the way poets, artists, and musicians worked and brought a dramatic transformation to the idea of art itself.

Rafael Malach is currently a professor in the department of Neurobiology at the Weizmann Institute in Israel. His current research is aimed at understanding how the neuronal circuitry in the human brain translates a stream of sensory stimuli into meaningful perception. Rafael Malach received his PhD in physiological optics from UC Berkeley and did his post-doctorate research at MIT. Originally doing research on the organization of neuronal connections in the primate brain, his focus has recently shifted to the study (...) of the human cerebral cortex using fMRI. Professor Malach has begun this research at Massachusetts General Hospital, exploring a new object-related region called the lateral occipital complex. Since then he expanded this research, studying the human visual cortex using a variety of methods, including adaptation paradigms, backward masking, and more recently naturalistic stimuli--all aimed at deciphering the intriguing link between perceptual experience and brain activity. (shrink)

Is there a substantial difference between a portrait depicting the sitter’s face made by an artist and an image captured by a machine able to simulate the neuro-physiology of facial perception? Drawing on the later Wittgenstein, this paper answers this question by reference to the relation between seeing a visual pattern as (i) a series of shapes and colours, and (ii) a face with expressions. In the case of the artist, and not of the machine, the portrait’s creative process (...) involves the ability to see both aspects. From the perspective of the image’s viewer, the distinction is more difficult to draw. I address this difficulty by further distinguishing between two attributes of portraits: their representational accuracy, and their ability to convey the artist’s reflection on her experience of seeing the sitter face-to-face. While artificial intelligence can mimic this latter reflective ability, it cannot exactly reproduce it. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Ideas 63.3 (2002) 465-481 [Access article in PDF] The Physiology of Political Economy: Vitalism and Adam Smith's Wealth of Nations Catherine Packham The Scottish Enlightenment has been described as uniting a concern with the origins and foundations of knowledge with a preoccupation with the useful application of knowledge in schemes of practical improvement. 1 Adam Smith's Inquiry into the Nature and Causes of the (...) Wealth of Nations, which combines a theoretical account of political economy with specific proposals on politico-economic matters, might seem to exemplify such a characterization. For some commentators at the time of its publication, however, Smith's lack of practical experience in the field of trade disqualified any claims he might make to authoritative knowledge. Sir John Pringle, for instance, military surgeon and friend of Smith's, thought that a man "who had never been in trade could not be expected to write well on the subject"; and while Dr. Johnson repudiated this, suggesting that all that was necessary was "extensive views," Pringle's opinion was not unusual. 2 Such objections, interrogating the very basis of Smith's expertise, reiterate, in the context of his work, the same kinds of questions regarding knowledge's provenance which preoccupied his age, and which were indeed addressed by Smith himself. Smith's own account of the formation of philosophical knowledge rests not on the authority of experience but on the role of the imagination; he understood systematic knowledge as an imaginative "machine" or work of fancy created to please and soothe a mind disturbed by phenomena which are observed but unexplained. 3 Smith's account of philosophical [End Page 465] knowledge, in which he would include his own Wealth of Nations, suggests that his own expertise should be judged not on the extent of his personal experience of the matters discussed but on the explanatory power and pleasurable nature of the system which he outlines. With its emphasis on the work of the philosophical imagination, his account also suggests that some of the sources for that system might be somewhat unexpected, a suggestion which this paper will pursue.Such questions concerning the genesis and formation of the new discourse of political economy instituted by Wealth of Nations have recurred in our own time, informing some of the more illuminating of recent work on Smith. Rejecting a tradition which assesses the significance of Wealth of Nations in terms of its anticipation of modern economic analysis, revisionist historians of political and economic thought have, since the late 1970s, offered more contextualist accounts of the work, tracing the relations between Smith's moral and economic philosophy and the contemporary discourses of natural jurisprudence and civic humanism. Other commentators have borrowed from literary scholarship to examine the textual and discursive conventions through which Smith's writings construct and sustain their meanings. 4 Such work has given a new emphasis to the textual and discursive nature of Smith's work as a means to understand its derivation, sources, and influences; it has replaced an older perception of Smith as inspired prophet-founder of the new political economy with an effort to interpret his work in the context of other, adjacent and contemporary forms of inquiry. Collectively, such work highlights the varied and disparate discourses which informed Smith's thinking on economic and other matters and seeks to understand how the complex and diverse forms of interaction with and assimilation of aspects of these philosophical and other discourses may have contributed to the formation of Smith's work—and hence, must also figure in our own attempts to read it.This paper, by exploring a strand of physiological language and imagery which runs through Wealth of Nations and considering it in the context of new developments in Scottish physiological research in the middle decades of the eighteenth century, also seeks to understand Smith's work by examining its relations with contemporary philosophical discourse. Where other recent accounts of Wealth of Nations have reassessed its relationship with moral, political and legal discourses, it will... (shrink)

This paper highlights the significance of sensory studies and psychophysical investigations of the relations between psychic and physical phenomena for our understanding of the development of the physics discipline, by examining aspects of research on sense perception, physiology, esthetics, and psychology in the work of Gustav Theodor Fechner, Hermann von Helmholtz, Wilhelm Wundt, and Ernst Mach between 1860 and 1871. It complements previous approaches oriented around research on vision, Fechner’s psychophysics, or the founding of experimental psychology, by charting Mach’s (...) engagement with psychophysical experiments in particular. Examining Mach’s study of the senses and esthetics, his changing attitudes toward the mechanical worldview and atomism, and his articulation of comparative understandings of sensual, geometrical, and physical spaces helps set Mach’s emerging epistemological views in the context of his teaching and research. Mach complemented an analytic strategy focused on parallel psychic and physical dimensions of sensation, with a synthetic comparative approach – building analogies between the retina, the individual, and social life, and moving between abstract and sensual spaces. An examination of the broadly based critique that Mach articulated in his 1871 lecture on the conservation of work shows how his historical approach helped Mach cast what he now saw as a narrowly limiting emphasis on mechanics as a phase yet to be overcome. (shrink)

This article considers categorical perception (CP) as a crucial process involved in all sort of communication throughout the biological hierarchy, i.e. in all of biosemiosis. Until now, there has been consideration of CP exclusively within the functional cycle of perception–cognition–action and it has not been considered the possibility to extend this kind of phenomena to the mere physiological level. To generalise the notion of CP in this sense, I have proposed to distinguish between categorical perception (CP) and (...) categorical sensing (CS) in order to extend the CP framework to all communication processes in living systems, including intracellular, intercellular, metabolic, physiological, cognitive and ecological levels. The main idea is to provide an account that considers the heterarchical embeddedness of many instances of CP and CS. This will take me to relate the hierarchical nature of categorical sensing and perception with the equally hierarchical issues of the “binding problem”, “triadic causality”, the “emergent interpretant” and the increasing semiotic freedom observed in biological and cognitive systems. (shrink)

The chapter begins with a sketch of the empirical, theoretical, and philosophical background to nineteenth-century theories of perception, focusing on visual perception. It then considers German sensory physiology and psychology in the nineteenth century and its reception. This section gives special attention to: assumptions about nerve–sensation relations; spatial perception; the question of whether there is a two-dimensional representation in visual experience; psychophysics; size constancy; and theories of colour perception. The chapter then offers a brief look at (...) the interaction between perceptual theory and philosophical issues in epistemology and the metaphysics of mind in Britain and America, focusing on: the notion of a muscle sense; the problem of the external world; and forms of perceptual realism. It ends with an overview of psychological theories of perception in the early twentieth century and the Gestalt reaction, culminating with J. J. Gibson. (shrink)

The aim of the present work is to show the roots of the conception of perception as an active process, tracing the history of its development from Plato to modern philosophy. The contributors inquire into what activity is taken to mean in different theories, challenging traditional historical accounts of perception that stress the passivity of percipients in coming to know the external world. Special attention is paid to the psychological and physiological mechanisms of perception, rational and non-rational (...) perception and the role of awareness in the perceptual process. Perception has often been conceived as a process in which the passive aspects - such as the reception of sensory stimuli - were stressed and the active ones overlooked. However, during recent decades research in cognitive science and philosophy of mind has emphasized the activity of the subject in the process of sense perception, often associating this activity to the notions of attention and intentionality. Although it is recognized that there are ancient roots to the view that perception is fundamentally active, the history remains largely unexplored. The book is directed to all those interested in contemporary debates in the fields of philosophy of mind and cognitive psychology who would like to become acquainted with the historical background of active perception, but for historical reliability the aim is to make no compromises. (shrink)

Against recent claims that infants begin with a sense of themselves as distinct selves, I propose that the infant's initial sense of self is still indeterminate and ambiguous, and is only progressively consolidated, beginning with embodied perceptions of others. Drawing upon Merleau-Ponty's phenomenology of perception and Hegel's notion of mutual recognition, and with reference to empirical studies in developmental psychology, I argue that perceiving other persons is significantly different from perceiving inanimate things. Until sufficient motor capacities have developed for (...) exploring and perceptually disambiguating inanimate things, it is only in perceiving others who recognize her that the infant is able to realize herself as a self. As the physiological and behavioural evidence suggests, whereas inanimate things initially captivate and dispossess the young infant, other people return her to herself. This paper lends support to the ideas that humans are ontologically social beings, and that selfhood is socially conditioned rather than given with consciousness. (shrink)

Aiming at the problem of insufficient health monitoring of the elderly in the existing home care system, this paper designs a health information analysis and early warning system based on the Internet of Things technology, which can monitor the physiological data of the elderly in real time. It also can be based on the elderly real-time monitoring data, physical examination data, and other types of health data, which can be used to predict diseases, so as to achieve “early detection and (...) early treatment” of diseases. First, analyse and design the architecture and content of the home care monitoring system based on the Internet of Things. Secondly, based on the collected heart rate, blood pressure, and three-axis acceleration information of the elderly, it is analysed to determine whether the elderly are in danger of falling, and the designed system is used for early warning. Finally, this paper analyses the prediction algorithm theory of the disease prediction module in the health monitoring software of the home care system. In order to improve the accuracy of prediction, the DS evidence theory is used to optimize the traditional BP neural network algorithm and conduct experimental tests. The test results show that the health information analysis and early warning software of the home care system meet actual needs and achieve the expected goals. (shrink)

It is proposed that subconscious retro-predictions in conjunction with brain state update cycles are instrumental in the physiological generation of conscious sensations and perceptions, and in all abstract thought. In this paper the hypothesis is supported by conducting a detailed a re-evaluation of the self-referential statements in Set Theory and Formal Logic known as antinomies. This study concludes that the recursive behavior exhibited by abstract enigmas such as "Russell’s Paradox" is analogous to the oscillations typical of bistable perceptual phenomena.

A recently proposed model of sensory processing suggests that perceptual experience is updated in discrete steps. We show that the data advanced to support discrete perception are in fact compatible with a continuous account of perception. Physiological and psychophysical constraints, moreover, as well as our awake-primate imaging data, imply that human neuronal networks cannot support discrete updates of perceptual content at the maximal update rates consistent with phenomenology. A more comprehensive approach to understanding the physiology of perception (...) (and experience at large) is therefore called for, and we briefly outline our take on the problem. (shrink)

The understanding of perception advanced by Aristotle and Theophrastus is largely physiological in character, describing the mechanism of perception and its resulting epistemic value. Like Epicurean views, theirs is not a theory of sensory ideas. The Stoics develop a competing approach to perception that describes sensory phenomena in terms of conceptual, linguistic representations.

Translation often proceeds as if languages already existed, as if the task of the translator were to make an appropriate selection from available resources. Clive Scott challenges this tacit assumption. If the translator is to do justice to himself/herself as a reader, if the translator is to become the creative writer of his/her reading, then the language of translation must be equal to the translators perceptual experience of, and bodily responses to, source texts. Each renewal of perceptual and physiological contact (...) with a text involves a renewal of the ways we think language and use our expressive faculties (listening, speaking, writing). Phenomenology and particularly the phenomenology of Merleau-Ponty underpins this new approach to translation. The task of the translator is tirelessly to develop new translational languages, ever to move beyond the bilingual into the multilingual, and always to remember that language is as much an active instrument of perception as an object of perception. Clive Scott is Professor Emeritus of European Literature at the University of East Anglia, and a Fellow of the British Academy. (shrink)

The controversy over inference in perception turns on the nature of the processes that intervene between the stimulus and the perceptual experience or percept. Should the processes be viewed as something like inference and computation, or should they be viewed as psychologically primitive mechanisms whose workings are best accounted for at a neurological or physiological level? It is argued that the view that computational and inference-like processes play a role in perceptual processes should be adopted.

Hermann von Helmholtz (1821-1894) established results both controversial and enduring: analysis of mixed colors and of combination tones, arguments against nativism, and the analysis of sensation and perception using the techniques of natural science. The paper focuses on Helmholtz’s account of sensation, perception, and representation via “physiological psychology”. Helmholtz emphasized that external stimuli of sensations are causes, and sensations are their effects, and he had a practical and naturalist orientation toward the analysis of phenomenal experience. However, he argued (...) as well that sensation must be interpreted to yield representation, and that representation is geared toward objective representation (the central thesis of contemporary intentionalism). The interpretation of sensation is based on “facts” revealed in experiment, but extends to the analysis of the quantitative, causal relationships between stimuli and responses. A key question for Helmholtz’s theory is the extent to which mental operations are to be ascribed a role in interpreting sensation. (shrink)

In this work I reconstruct the physical and mental descriptions of perception in Aristotle. I propose to consider the thesis that αἴσθησις is a μεσότης (DA II 11) as a description of the physiological aspect of perception, meaning that perceiving is a physical act by which the sensory apparatus homeostatically counterbalances, and thence measures, the incoming affection produced by external perceptible objects. The proposal is based on a revision of the semantics of the word mesotês in Plato, Aristotle (...) and later Greek mathematicians (mostly Nicomachus of Gerasa). I show how this interpretation fits the text, and how it solves problems that afflict the rival interpretations. I further develop a ‘non-dephysiologizing’ spiritualist reading of the additional description of perception as reception of forms without the matter (DA II 12). I show that Aristotle uses the expression ‘forms without matter’ to describe actually abstracted items in one’s mind rather than the way in which the form are received. In opposition to forms-in-matter, such items are causally powerless and metaphysically sterile: an F-without-matter somewhat determines the subject it is in (one’s mind content F) without qualifying or identifying it as an F-subject. Thus, we have a second ‘mental’ description of perception. Further parts of the thesis are devoted to settle interpretive questions raised by controversial statements about perception found in De Anima II 5 and III 2, and to discuss the question of how the mental and physiological descriptions of perception Aristotle offers are related. My conclusion is that Aristotle’s views combines a form of quasi-dualist vitalism about powers (the faculty of perception, and more generally the soul, are not just irreducible to matter, but also primitive and non-supervenient) which is nonetheless compatible with hylomorphism, and a form of epiphenomenalism (and thence the ‘bottom-up’ determination typical of modern supervenience) with regard to perceptual events (i.e., the activity of perceiving). (shrink)

The 21 selections are divided into three conceptual approaches to the study of perception: the neurophysiology, the psychology, and the phenomenology of perception, with a final section, some problematic studies. In effect, however, the editor is challenging the metaphysical position hidden in the attitude that behavioral physiology should be an "exact science" without philosophical commitments. Parts II and IV, no less than the explicit statements of Husserl, Merleau-Ponty, Gurwitsch and Erwin Strauss in Part III, stand over against a (...) point of view which, beginning with Cartesian dualism, attempts to resolve it in a materialist reduction, a point of view in which behavior is always reaction, of nervous systems to physical stimulation from an "external," "real," world. Tibbetts is pressing two points--first, that all science must be based on some presuppositions or other and second, that any metapsychology ignores physiological and behavioral research only at its peril. In Part I, Bain, Lashley and Sperry are among the authors. In Parts II and IV Tibbetts brings together selections by Hochberg, Gregory, Gibson, Penfield, Donald Campbell, a bit of Piaget, team research reports, and more to provide in one place material not easily at hand. Some authors provide bibliographical references, and the editor gives nine more pages of bibliography.--M. B. M. (shrink)