My aim in this paper is to defend a version of the brain process theory, or identity thesis, which differs in one important respect from the theory put forward by J.J.C. Smart. I shall argue that although the sensations which a person experiences are, as a matter of contingent fact, brain processes, nonetheless there are facts about sensations which cannot be described or understood in terms of any physical theory. These 'mental' facts cannot be described by physics for (...) the simple reason that physical descriptions are designed specifically to avoid mentioning such facts. Thus in giving a physical explanation of a sensation we necessarily describe and render intelligible that sensation only as a physical process, and not also as a sensation. If we are to describe and render intelligible a person's sensations, or inner experiences, as sensations, and not as physical processes occurring in that person's brain, then we must employ a kind of description that connot be derived from any set of physical statements. (shrink)

Hylomorphists claim that sensation is a bodily act. In this essay, I attempt to make sense of this notion but conclude that sensation is not a bodily act, but a mental one occurring in an intentional field of awareness.

Wittgenstein’s philosophy involves a general anti-platonism about properties or standards of similarity. On his view, what it is for one thing to have the same property as another is not dictated by reality itself; it depends on our classificatory practices and the standards of similarity they embody. Wittgenstein’s anti-platonism plays an important role in the private language sections and in his discussion of the conceptual problem of other minds. In sharp contrast to Wittgenstein’s views stands the contemporary doctrine of natural (...) properties, which holds that there is an objective hierarchy of naturalness amongst properties, a hierarchy that is completely independent of our concepts or practices. Some authors have appealed to the natural properties view to offer an explicitly anti-Wittgensteinian account of sensation concepts. The paper discusses these competing views of properties and sensation concepts. It is argued that, if our account of concepts of conscious states starts from a commitment to natural properties, we are bound to recognize that our actual classificatory practices also play a crucial role in determining which properties our concepts pick out. On the other hand, if we start from the anti-platonist position, we are bound to recognize that we also need a notion of sameness of property that extends beyond our limited capacity to recognize similarity or sameness of property. The correct view, it is concluded, must occupy a middle position between an extreme anti-realism about properties and an extreme version of the natural properties view. It is suggested that Wittgenstein’s own view does just that. (shrink)

This paper defends an interpretation of the representational function of sensation in Kant's theory of empirical cognition. Against those who argue that sensations are ?subjective representations? and hence can only represent the sensory state of the subject, I argue that Kant appeals to different notions of subjectivity, and that the subjectivity of sensations is consistent with sensations representing external, spatial objects. Against those who claim that sensations cannot be representational at all, because sensations are not (...) cognitively sophisticated enough to possess intentionality, I argue that Kant does not use the term ?Vorstellung? to refer to intentional mental states exclusively. Sensations do not possess their own intentionality, but they nevertheless perform a representational function in virtue of their role as the matter of empirical intuition. In empirical intuition, the sensory qualities given in sensation are combined with the representation of space to constitute the intuited appearance. The representational function of sensation consists in sensation being the medium out of which intuited appearances are constituted: the qualities of sensations stand in for what the understanding will judge (conceptualize) as material substance. (shrink)

An ongoing mystery in sensory science is how sensation magnitude F(I), such as loudness, increases with increasing stimulus intensity I. No credible, direct experimental measures exist. Nonetheless, F(I) can be inferred algebraically. Differences in sensation have empirical (but non-quantifiable) minimum sizes called just-noticeable sensation differences, ∆F, which correspond to empirically-measurable just-noticeable intensity differences, ∆I. The ∆Is presumably cumulate from an empirical stimulus-detection threshold I_th up to the intensity of interest, I. Likewise, corresponding ∆Fs cumulate from the sensation at the stimulus-detection (...) threshold, F(I_th ), up to F(I). Regarding the ∆Is, however, it is unlikely that all of them will be known experimentally; the procedures are too lengthy. The customary approach, then, is to find ∆I at a few widely-spaced intensities, and then use those ∆Is to interpolate all ∆Is using some smooth continuous function. The most popular of those functions is Weber’s Law, ∆I⁄I=K. But that is often not even a credible approximation to the data. However, there are other equations for ∆I⁄I. Any such equation for ∆I⁄I can be combined with any equation for ∆F, through calculus, to altogether obtain F(I). Here, two assumptions for ∆F are considered: ∆F=B (Fechner’s Law) and (∆F⁄F)=g (Ekman’s Law). The respective integrals involve lower bounds I_th and F(I_th ). This stands in broad contrast to the literature, which heavily favors non-bounded integrals. We, hence, obtain 24 new, alternative equations for sensation magnitude F(I) (12 equations for (∆I⁄I) × 2 equations for ∆F). (shrink)

I argue that Leibniz’s doctrine of sensory representation is intended in part to close an explanatory gap in his philosophical system. Unlike the twentieth century explanatory gap, which stretches between neural states on one side and phenomenal character on the other, Leibniz’s gap lies between experiences of secondary qualities like color and taste and the objects that cause them. The problem is that the precise arrangement and distribution of such experiences can never be given a full explanation. In response, Leibniz (...) appeals to representation. I argue that the sense in which Leibnizian sensations are representations is too weak to close his explanatory gap. In the end, he must appeal to the doctrine of the best possible world. (shrink)

Philosophical considerations regarding experiential spatial content have focused on exteroceptive sensations presenting external entities, and not on interoceptive experiences that present states of our own body. A notable example is studies on interoceptive touch, in which it is argued that interoceptive tactile experiences have rich spatial content such that tactile sensations are experienced as located in a spatial field. This paper investigates whether a similarly rich spatial content can be attributed to experiences of acute, cutaneous pain. It is (...) argued that such experiences of pain do not have field-like content, as they do not present distance relations between painful sensations. (shrink)

Does inner sense, like outer sense, provide inner sensations or, in other words, a sensory manifold of its own? Advocates of the disparity thesis on inner and outer sense claim that it does not. This interpretation, which is dominant in the preexisting literature, leads to several inconsistencies when applied to Kant’s doctrine of inner experience. Yet, while so, the parity thesis, which is the contrasting view, is also unable to provide a convincing interpretation of inner sensations. In this (...) paper, I argue that this deadlock can be traced back to an inadequate understanding of inner sense shared by both sides. Drawing upon an analysis of the notion of obscure representations, I offer an alternative interpretation of inner sense with a special regard to self-affection, apprehension, and attention. From this basis, I will infer that outer sense delivers sensory content that is initially and intrinsically unaccompanied by phenomenal consciousness; inner sense contributes by endowing such content with phenomenal consciousness. Therefore, phenomenal qualities can be regarded as the sensory manifold of inner sense. This alternative interpretation solves the long-standing dispute concerning inner sensations and would further illuminate Kant’s notion of inner experience. (shrink)

My aim in this essay is to clarify certain issues relating to Kant’s definition of sensation. I will argue that even though sensation can occur in Kant’s system only if the subject is physiologically affected by some kind of object, Kant defines sensation non-referentially, that is, as relating entirely to the subject without reference to the affecting object. In the process, I will also demonstrate that sensation for Kant is the feeling accompanying the non-durational and obscurely conscious alteration or modification (...) in the representational state of the subject. (shrink)

This chapter has three sections. The first introduces Brentano’s view of sensations by presenting the intentional features of sensations irreducible to features of the sensory objects. The second presents Brentano’s view of sensory objects —which include sensory qualities— and the features of sensations that such objects allow to explain, such as their intensity. The third section presents Brentano’s approach to sensory pleasures and pains, which combines both appeal to specific modes of reference and to specific sensory qualities.

Shepherd argues that we can know that there exists a universe external to the mind because that universe is the only possible cause of our sensations. As a part of that argument, Shepherd eliminates the possibility that sensations might be caused by other sensations on the grounds that sensations are merely momentary existences and so not capable of standing in causal relations with each other. And yet she claims that sensations do stand in causal relations (...) to other objects, both as the effects of the combination of the external world, our organs of sense, and our minds, and as the partial causes of other sensations. These claims together generate a puzzle. If sensations are too fleeting to stand in causal relations with each other, how are they nonetheless capable of standing in causal relations to other objects? I suggest that because sensations exist only for a moment, to stand in synchronous causal relations with other sensations would require that the two sensations exist at precisely the same moment. But since cause and effect are identical during the moment in which they are combined, any two sensations that exist for only the moment of their combination are identical. Nothing can be its own cause, so sensations cannot be the sole cause of other sensations. Sensations can be the partial cause or effect of other objects, though, so long as those objects endure for more than a single moment. For example, external objects, organs of sense, and the mind, all exist both before and after the moments in which they combine to form a sensation. So, while their combination is identical to that sensation in that moment, all of these other objects exist outside of that moment, and that combination as well. (shrink)

Anscombe’s published writings, lectures and notes on sensation point toward a sophisticated critique of sense-data, representationalist and direct realist theories of perception (in both their historical and contemporary forms), and a novel analysis of the concept of sensation. Her philosophy of perception begins with the traditional question, ‘What are the objects of sensation?’, but the response is a grammatical rather than ontological enquiry. What, she asks, are the characteristics of the grammatical object of sensation verbs? Anscombe’s answer is: sensation verbs (...) take ‘intentional objects’, where an ‘intentional object’ is a description which has the characteristics of the concept of intention—characteristics elucidated in great detail in her Intention. This simple manoeuvre allows Anscombe to reject two opposing positions in the philosophy of perception - that the objects of sensation are sense-data and that the objects of sensation are tables and chairs (etc). Both views, she argues, fail to recognise the grammatical fact that the verbs of sensation take intentional objects. This chapter outlines the case for a grammatical methodology in philosophy of perception, by framing an analysis of the ways in which the sense-data and direct-realist theories of perception arise out of the theoretical demands that are generated when the grammar of the concept of sensation is left unexplored. Along the way, it will be shown that Anscombe’s philosophy of perception should not be read as fore-running contemporary representationalism, and that reading it as such in fact runs counter not only to the letter but the spirit of Ancombe’s proposal. (shrink)

In the well-known intentionality quote of his Psychology from an Empirical Standpoint, Brentano characterises the mental phenomena through the following features: (i) the intentional inexistence of an object, (ii) the relation to a content, and (iii) the direction toward an object. The text argues that this characterisation is not general because the direction toward an object does not apply to the mental phenomena of sensation. The second part of the paper analyses the consequences that ensue from here for the Brentanian (...) classification of mental phenomena: in Brentano’s psychology one can distinguish two concepts of mental phenomena − the mental phenomenon in a broad sense and the mental phenomenon in a narrow sense; the former concept allows the separation of the mental from the physical, while the narrow concept allows the distinguishing of the main classes of mental phenomena. The third part of the paper shows that, with respect to sensation, the absence of a direction toward an object is compatible with both Brentano’s early taxonomies of philosophical sciences, and his early program for the establishment of a new, empirical and non-speculative philosophy. For this reason, I hold that intentionality is important for the foundation of both psychology, and empirical philosophy. (shrink)

I argue against a class of philosophical views of color perception, especially insofar as such views posit the existence of color sensations. I argue against the need to posit such nonconceptual mental intermediaries between the stimulus and the eventual conceptualized perceptual judgment. Central to my arguments are considerations of certain color illusions. Such illusions are best explained by reference to high-level, conceptualized knowledge concerning, for example, object identity, likely lighting conditions, and material composition of the distal stimulus. Such explanations (...) obviate the need to appeal to nonconceputal mental links in the causal chains eventuating in conceptualized color discriminations. (shrink)

Can an understanding be formed of how sensory experience might be presented or manipulated in visual art in order to promote a relational concept of the senses, in opposition to the customary, capitalist notion of sensation as a private possession, as a sensory impression that is mine? I ask the question in the light of recent visual art theory and practice which pursue relational, ecological ambitions. As Arnold Berleant, Nicolas Bourriaud, and Grant Kester see it, ecological ambition and artistic form (...) should correspond, but they fail to recognize sensation as a site where the ecological cause can be fought. Jacques Rancière argues for the political force of the senses, but his distribution of the sensible does not address the particularity of sensory experience. I identify the difference between these approaches within recent relational or ecological aesthetics and my position on sensibility, and indicate some of the problems involved in referring to the senses. I set out the concepts that are central to the cultivation of relational sensibility: style, autofiguration, and the mobility of sensory meaning, extrapolated from Maurice Merleau-Ponty’s discussion of Paul Cézanne. They amount to positioning the senses ontologically as movements along lines of conceptual-sensory connection and implication, based on the transfer of meanings created artistically through style and autofiguration. (shrink)

Bodily sensations, such as pain, hunger, itches, or sexual feelings, are commonly characterized in terms of their phenomenal character. In order to account for this phenomenal character, many philosophers adopt strong representationalism. According to this view, bodily sensations are essentially and entirely determined by an intentional content related to particular conditions of the body. For example, pain would be nothing more than the representation of actual or potential tissue damage. In order to motivate and justify their view, strong (...) representationalists often appeal to the reliable causal covariance between bodily sensations and certain kinds of bodily conditions or to the corresponding biological function that these bodily sensations are supposed to fulfill. In this paper, I argue on the basis of recent empirical research that arguments from reliable causal covariance and biological function cannot motivate the introduction of corresponding intentional content. In particular, I argue that bodily sensations are caused by a heterogeneous class of physiological and psychological factors and their biological functions are too diverse to be reduced to the representation of a particular bodily condition. Responses are available to strong representationalists, but they either require substantial alterations to their core assumptions or incur a significant empirical burden. (shrink)

Ecological Psychology and Enactivism both challenge representationist cognitive science, but the two approaches have only begun to engage in dialogue. Further conceptual clarification is required in which differences are as important as common ground. This paper enters the dialogue by focusing on important differences. After a brief account of the parallel histories of Ecological Psychology and Enactivism, we cover incompatibility between them regarding their theories of sensation and perception. First, we show how and why in ecological theory perception is, crucially, (...) not based on sensation. We elucidate this idea by examining the biological roots of work in the two fields, concentrating on Gibson and Varela and Maturana. We expound an ecological critique of any sensation-based approach to perception by detailing two topics: classic retinal image theories and perception in single-celled organisms. The second main point emphasizes the importance of the idea of organism-environment mutuality and its difference from structural coupling of sensations and motor behavior. We point out how ecological - phenomenological methods of inquiry grow out of mutualism and compare Gibson’s idea of visual kinesthesis to Merleau-Ponty’s idea of the lived body. Third, we conclude that Ecological Psychology and varieties of Enactivism are laying down different paths to pursue related goals. Thus, convergence of Ecological Psychology and Enactivism is not possible given their conflicting assumptions, but cross-fertilization is possible and desirable. (shrink)

This chapter has three sections. The first introduces Brentano’s view of sensations by presenting the intentional features of sensations irreducible to features of the sensory objects. The second presents Brentano’s view of sensory objects —which include sensory qualities— and the features of sensations that such objects allow to explain, such as their intensity. The third section presents Brentano’s approach to sensory pleasures and pains, which combines both appeal to specific modes of reference and to specific sensory qualities.

This paper explores the details of Malebranche‘s philosophy of mind, paying particular attention to the mind-body relationship and the roles of the imagination and the passions. I demonstrate that Malebranche has available an alternative to his deontological ethical system: the alternative I expose is based around his account of the embodied aspects of the mind and the sensations experienced in perception. I briefly argue that Hume, a philosopher already indebted to Malebranche for much inspiration, read Malebranche in the positive (...) way that I here describe him. Malebranche should therefore be acknowledged as a serious influence on Enlightenment philosophy of sensibility. (shrink)

Anscombe introduces the notion of "non-observational knowledge" by taking the knowledge one usually has of the position of his limbs as an example. According to her definition two requirements need to be met when we speak of "observing something": first, we can speak of separately describable sensations (call it the SD condition); second, having such sensations is in some sense our criterion for saying something (call it the CS condition). The "sensations of position"-so called by Anscombe-play a (...) central role in understanding the knowledge we usually have of our bodily position as non-observational. But, do we really have such sensations? If yes, how can we tell whether they are "separately describable" or not? In what sense can having a given sensation be or be not our criterion of saying something? And, why (and how) are the above question to be related to our understanding the knowledge that we usually have of our bodily position as non-observational knowledge? By clarifying the ambiguity in the possible meanings of "sensation of X", I'll try to defend my understanding of Anscombe's answers to the above questions, namely, that we do have sensations of position, and usually they are neither separately describable nor our criterion of saying something-in the sense that we usually don't identify our bodily position by identifying the sensations of position, and that. (shrink)

The goal of this essay is a twofold one. My first task is mainly negative: I want to show that the heated debate over whether pleasure is a sensation misallocates the central task in understanding pleasure and has been based on an unexamined conception of sensation, despite the long philosophical tradition and topical opinions that hold the opposite . My second task is to bring out attention to a relatively uncharted territory in our investigation of pleasure. I shall argue, Gilbert (...) Ryle's Aristotelian insight on the pleasure in intelligent activities, when properly understood, should have led us, and Ryle himself, to investigate pleasure in connection with intentional action and practical rationality. (shrink)

The neo-Kantian Hermann Cohen is famously anti-empiricist in that he denies that sensations can make a definable contribution to knowledge. However, in the second edition of Kant’s Theory of Experience (1885), Cohen considers a proposition that contrasts with both his other work and that of his followers: a Kantian who studies scientific claims to truth—and the grounds on which they are made—cannot limit himself to studying mathematics and logical principles, but needs to also investigate underlying presuppositions about the empirical (...) element of science. Due to his subjectivist approach, Cohen argues, Kant not only failed to explain how scientific observation and experiments are possible, but also misconceived the role of the ideas, particularly the idea of a system of nature. (shrink)

L’étude proposée ici se déroulera en trois moments. Il s’agit, dans un premier temps, de revenir sur la manière dont la question du rapport entre vérité et fiction est posée dans le Traité des sensations de Condillac. Il faut rappeler la justification du recours à la fiction d’une statue gagnant un sens à la fois dans le cadre d’une analyse portant sur l’origine des idées, c’est-à-dire du recours à l’imagination dans le contexte d’une enquête métaphysique ressortissant à la raison. (...) Dans un second temps, il faut se pencher sur ce qu’on peut appeler la fonction du romanesque dans le dispositif global de la fiction condillacienne, c’est-à-dire, non pas seulement ce qui revient au fictionnel, mais en propre à un art narratif visant des séquences événementielles singulières. Enfin, on terminera par quelques remarques sur ce qui est très souvent négligé dans les études portant sur ce texte – du moins en philosophie, et qui ne manque pourtant pas d’être curieux, à savoir, justement, son inscription dans le registre des Mémoires ou des pseudo-Mémoires. (shrink)

What is it that makes a mental state conscious? Recent commentators have proposed that for Kant, consciousness results from differentiation: A mental state is conscious insofar as it is distinguished, by means of our conceptual capacities, from other states and/or things. I argue instead that Kant’s conception of state consciousness is sensory: A mental state is conscious insofar as it is accompanied by an inner sensation. Interpreting state consciousness as inner sensation reveals an underappreciated influence of Crusius on Kant’s view, (...) solves some long-standing puzzles concerning Kant’s difficult doctrine of self-affection, and sheds light on his theory of inner experience. (shrink)

I will review the most widely held account of phantom sensations; the “re-mapping hypothesis.” According to the re-mapping hypothesis, amputation is followed by significant neural reorganization that, over time, restores the alignment between the brain’s representation of and the actual condition of the body. Implicit in the re-mapping hypothesis is the view that the brain’s primary function is to accurately represent the body. In response, I propose an alternative theory, the “preservation hypothesis.” The preservation hypothesis argues that the primary (...) function of the brain is to preserve the entirety of the brain’s structures and functional capacities. While these issues concern empirical matters, assessing our views on the subject discloses deeply held assumptions regarding the brain’s primary function; does the brain operate to provide an accurate representation of the body? Or, does the brain operate solely to preserve its structures and functional capacities in their entirety? (shrink)

In the opening section of this paper we spell out an account of our na ve view of bodily sensations that is of historical and philosophical significance. This account of our shared view of bodily sensations captures common ground between Descartes, who endorses an error theory regarding our everyday thinking about bodily sensations, and Berkeley, who is more sympathetic with common sense. In the second part of the paper we develop an alternative to this account and discuss (...) what is at stake in deciding between these two ways of understanding our everyday view. In the third and final part of the paper we offer an argument in favour of our alternative. (shrink)

Evolution and geometry generate complexity in similar ways. Evolution drives natural selection while geometry may capture the logic of this selection and express it visually, in terms of specific generic properties representing some kind of advantage. Geometry is ideally suited for expressing the logic of evolutionary selection for symmetry, which is found in the shape curves of vein systems and other natural objects such as leaves, cell membranes, or tunnel systems built by ants. The topology and geometry of symmetry is (...) controlled by numerical parameters, which act in analogy with a biological organism’s DNA. The introductory part of this paper reviews findings from experiments illustrating the critical role of two-dimensional (2D) design parameters, affine geometry and shape symmetry for visual or tactile shape sensation and perception-based decision making in populations of experts and non-experts. It will be shown that 2D fractal symmetry, referred to herein as the “symmetry of things in a thing”, results from principles very similar to those of affine projection. Results from experiments on aesthetic and visual preference judgments in response to 2D fractal trees with varying degrees of asymmetry are presented. In a first experiment (psychophysical scaling procedure), non-expert observers had to rate (on a scale from 0 to 10) the perceived beauty of a random series of 2D fractal trees with varying degrees of fractal symmetry. In a second experiment (two-alternative forced choice procedure), they had to express their preference for one of two shapes from the series. The shape pairs were presented successively in random order. Results show that the smallest possible fractal deviation from “symmetry of things in a thing” significantly reduces the perceived attractiveness of such shapes. The potential of future studies where different levels of complexity of fractal patterns are weighed against different degrees of symmetry is pointed out in the conclusion. (shrink)

I shall specify about what we are thinking when we are talking about regulating something by specifying accuracy conditions. The main thesis is that we couldn’t describe representational relations as perceptual relationships if we lack a normative conception of relationships between representing and represented. Hence, searching for what it is assessable for accuracy depends on specifying the kind of intentional content which is normatively individuated and attributed.

In order to illustrate the difference between sensation and perception, Reid imagines a blind man that by ‘some strange distemper’ has lost all his notions of external objects, but has retained the power of sensation and reasoning. Reid argues that since sensations do not resemble external objects, the blind man could not possibly infer from them any notion of primary qualities. Condillac proposed a similar thought experiment in the Treatise on Sensations. I argue that Condillac can reach a (...) conclusion opposite to that of Reid only by assuming that some particular collections of sensations do indeed resemble the qualities of external objects. Reid had considered a similar case in a manuscript, but he again notices that such complex collections sensations do not resemble the qualities of external objects. (shrink)

The contribution of recent theories of sound and audition has been extremely significant for the development of a philosophy of auditory perception; however, none tackle the question of how our consciousness of auditory states arises. My goal is to show how consciousness about our auditory experience gets triggered. I examine a range of auditory mental phenomena to show how we are able to capture qualitative distinctions of auditory sensations. I argue that our consciousness of auditory states consists in having (...) thoughts that organize our experience. Although my proposals could be adapted to fit with other theories of consciousness, here I expand David Rosenthal’s high-order-thought theory and his quality-space theory, and show their usefulness for analyzing our auditory experience. I use quality-space to account for pitch, timbre, loudness, and sound location. I further show that our high-order-thoughts capture qualitative aspects of our auditory sensations. I conclude by demonstrating how a hypothetical listener in possession of a refined vocabulary describes and reports her high-order-thoughts about her musical experience. (shrink)

I attempt to draw out some difficulties with what may at first seem an intuitive and uncontroversial picture of tactile sensation - a picture of tactile sensation as perception of spatial locations where these spatial locations serve as the units out of which we build our awareness of bodily position. Given these shortcomings, rather than continue to labour under this overall picture of tactile sensation as the epistemic foundation of our awareness of bodily position, I reverse the direction of explanation, (...) taking an immediate awareness of bodily position as the epistemic foundation of tactile sensation. Brian O'Shaughnessy's perceptual theory, and Michael Martin's development of it - if correct - enable this reversal. I do not critically assess O'Shaughnessy and Martins' theories, at least not in much depth. However, by giving a clear account of the difficulties they may resolve, it is hoped that the scope and potential power of these theories has been demonstrated. (shrink)

This article reconstructs Gilles Deleuze’s engagement with phenomenology, and with the phenomenological problematic of sensation, in his Francis Bacon: The Logic of Sensation. Considering Deleuze’s adoption, from the phenomenology of art, of notions of sensation and rhythm, it examines how Deleuze complexifies these phenomenological notions by aligning them with his profoundly non-phenomenological notion of the body without organs, as well as with the concepts of modulation and the diagram. In mapping Deleuze’s complexification of rhythm and his development of a logic (...) of rhythmic modulation, this article shows how Deleuze immanently refines an approach to working beyond phenomenology, through phenomenology. (shrink)

Perception is a first-person internal sensation induced within the nervous system at the time of arrival of sensory stimuli from objects in the environment. Lack of access to the first-person properties has limited viewing perception as an emergent property and it is currently being studied using third-person observed findings from various levels. One feasible approach to understand its mechanism is to build a hypothesis for the specific conditions and required circuit features of the nodal points where the mechanistic operation of (...) perception take place for one type of sensation in one species and to verify it for the presence of comparable circuit properties for perceiving a different sensation in a different species. The present work explains visual perception in mammalian nervous system from a first-person frame of reference and provides explanations for the homogeneity of perception of visual stimuli above flicker fusion frequency, the perception of objects at locations different from their actual position, the smooth pursuit and saccadic eye movements, the perception of object borders, and perception of pressure phosphenes. Using results from temporal resolution studies and the known details of visual cortical circuitry, explanations are provided for (a) the perception of rapidly changing visual stimuli, (b) how the perception of objects occurs in the correct orientation even though, according to the third-person view, activity from the visual stimulus reaches the cortices in an inverted manner and (c) the functional significance of well-conserved columnar organization of the visual cortex. A comparable circuitry detected in a different nervous system in a remote species-the olfactory circuitry of the fruit fly Drosophila melanogaster-provides an opportunity to explore circuit functions using genetic manipulations, which, along with high-resolution microscopic techniques and lipid membrane interaction studies, will be able to verify the structure-function details of the presented mechanism of perception. (shrink)

We all have different “tastes” for different tastes: some of us have a sweet tooth, while others prefer more subtle flavors; some crave spicy foods, while others cannot stand them. As Bourdieu and others have pointed out, these varying judgments seem to be more than mere preferences; often they reflect (and partially constitute) differences of class and culture. But I want to suggest that we’ve possibly overlooked another important source of these divergent gastronomic evaluations, other than hierarchy and caste: mere (...) interpersonal variability with respect to brute gustatory sensations. After all, we all know about “supertasters and cilantro-haters”; how likely is it, though, that the interpersonal heterogeneity of gustatory sensation is limited to this one dimension? In this paper, I make the case that we should take this possibility more seriously, and offer some thoughts on how we might start getting a better handle on the nature and scope of interpersonal gustatory variability—including by suggesting some diagnostics that can help us get at (what I call) some of the “non-flavor dimensions” of our gustatory experience. I conclude by developing some implications for the prospects of an “alimentary aesthetics”: namely, that—should our gustatory experiences turn out to be quite heterogeneous—then they do not seem well-suited to serve as the basic ingredients of bona fide aesthetic judgment about food and drink. (shrink)

Like their contemporary counterparts, early modern philosophers find themselves in a predicament. On one hand, there are strong reasons to deny that sensations are representations. For there seems to be nothing in the world for them to represent. On the other hand, some sensory representations seem to be required for us to experience bodies. How else could one perceive the boundaries of a body, except by means of different shadings of color? I argue that Nicolas Malebranche offers an extreme (...) -- and ultimately unworkable -- attempt to solve this riddle. Most commentators claim that Malebranche defends an adverbial theory of sensation, according to which a sensation is merely a way in which an act of sensing happens. The adverbial reading is wrong, or so I argue. Once we arrive at a more accurate reading, we shall see that his position is much more strange than is currently thought. Nevertheless, Malebranche’s view is similar to the adverbial theory in one respect, albeit it at a very high level of generality. His view thus inherits two of the main problems that afflict adverbial theories. Although Malebranche fails to solve them, his ingenious attempts to do so are instructive. (shrink)

In the Essay Concerning Human Understanding, Locke insists that all knowledge consists in perception of the agreement or disagreement of ideas. However, he also insists that knowledge extends to outer reality, claiming that perception yields ‘sensitive knowledge’ of the existence of outer objects. Some scholars have argued that Locke did not really mean to restrict knowledge to perceptions of relations within the realm of ideas; others have argued that sensitive knowledge is not strictly speaking a form of knowledge for Locke. (...) This chapter argues that Locke’s conception of sensitive knowledge is in fact compatible with his official definition of knowledge, and discusses his treatment of the problem of skepticism, both in the Essay and in the correspondence with Stillingfleet. (shrink)

Background— Although one of the main characteristics of psychopaths is a deficit in emotion, it is unknown whether they show a fundamental impairment in appropriately recognizing their own body sensations during an emotion-inducing task. Method— Skin conductance and heart rate were recorded in 138 males during a social stressor together with subjective reports of body sensations. Psychopathic traits were assessed using the Psychopathy Checklist – Revised (PCL-R) 2nd edition (Hare, 2003). Results— Nonpsychopathic controls who reported higher body (...) class='Hi'>sensations showed higher heart rate reactivity, but this verbal-autonomic consistency was not found in psychopathic individuals. This mind-body disconnection is particularly associated with the interpersonal-affective factor of psychopathy. Conclusions— Findings are the first to document this body sensations– autonomic mismatch in psychopaths, and suggest that somatic aphasia the inaccurate identification and recognition of one‘s own somatic states may partly underlie the interpersonal-affective features of psychopaths. (shrink)

Philosophers of mind have distinguished (and sometimes conflated) various qualities. This article tries to sort things out.

If we acknowledge that a perceptual experience’s sensory phenomenology is not inherently representational, we face a puzzle. On the one hand, sensory phenomenology must play an intimate role in the perception of ordinary physical objects; but on the other hand, our experiences’ purely sensory element rarely captures our attention. I maintain that neither indirect realism nor the dual component theory provides a satisfactory solution to this puzzle: indirect realism is inconsistent with the fact that sensory phenomenology typically goes unnoticed by (...) perceivers; while, the dual component theory cannot do justice to the important role that sensory phenomenology plays in our perceptual awareness of physical objects. I argue that in order to avoid the difficulties with each of the standard alternatives, we must characterize sensory phenomenology as functioning in the way that linguistic symbols function in thought. (shrink)

Technologies based on emergence will allow to reproduce sensations on non-biological carriers by making devices feel. These technologies will change fundamentally not only the approach to the creation of artificial intelligence, but also create artificial worlds of a totally different level. Which, unlike virtual models, will really exist for themselves. This approach differs completely from the methods currently used in digital technologies. Possibly the principles described herein will give a rise to many new trends.

The investigation that follows will flex in four directions, backwards and forwards, along the elastic threadthat ties the event of the bullfight to sex and thence a warm spill of sensation. In order to enter the fraythat is the bullfight, I will appropriate a term from Gilles Deleuze and Félix Guattari by way of which eachof the four thrusts I advance, or fights I present, can be read as asignifying ruptures [1] . With thisconcept we are encouraged to question the (...) integrity of signification. By breaching the threshold ofsignification there results a momentary loss of the senses, at which point we might take the opportunityto search out or invent other modes of making sense. The activity of writing, for instance, as one meansof experimenting with sense, "has nothing to do with signifying. It has to do with surveying, mapping,even realms that are yet to come" [2]. Though the bullfight is organised by way of its own particularcodes ofoperation and signification, much is also left to chance and the unexpected [3] . With thisemphasis on unexpected novelty in mind, I ask you to consider this paper as an arena in which fourbullfights will be conducted. The twists and turns of the trope of the bullfight will be surveyed across fourdifferent textual terrains in order to explore the effects that result in bringing these terrains into thevicinity of each other. As such, I will touch upon the work of Georges Bataille, Friedrich Nietzsche,Francis Bacon and Michel Leiris. As Nietzsche has suggested, using the tauromachic trope, to enter intoa "frightful and dangerous" enterprise does not necessarily enable the capture of an enraged bull [4]; atthe outset we cannot necessarily be assured of what will eventuate with the outcome. Furthermore, thatthe bull is always vanquished merely holds to the dictates of good and common sense, conventions that,in this arena, are only tenuously maintained. It is instead the event that surfaces as an incorporeal blocof sensation, exploding in the midst of the spectacle, that this paper determines to pursue. (shrink)

The Cartesian concept of nature, which has determined modern thinking until the present time, has become obsolete. It shall be shown that Hegel's objective-idealistic conception of nature discloses, in comparison to that of Descartes, new perspectives for the comprehension of nature and that this, in turn, results in possibilities of actualizing Hegel's philosophy of nature. If the argumentation concerning philosophy of nature is intended to catch up with the concrete Being-of-nature and to meet it in its concretion, then this is (...) impossible for the finite spirit in a strictly a priori sense – this is the thesis supported here which is not at all close to Hegel. As the argumentation rather has to consider the conditions of realization concerning the Being-of-nature, too, it is compelled to take up empirical elements – concerning the organism, for instance, system-theoretical aspects, physical and chemical features of the nervous system, etc. With that, on the one hand, empirical-scientific premises are assumed (e.g. the lawlikeness of nature), which on the other hand become (now close to Hegel) possibly able to be founded in the frame of a Hegelian-idealistic conception. In this sense, a double strategy of empirical-scientific concretization and objective-idealistic foundation is followed up, which represents the methodical basic principle of the developed considerations. In the course of the undertaking, the main aspects of the whole Hegelian design concerning the philosophy of nature are considered – space and time, mass and motion, force and law of nature, the organism, the pro-blem of evolution, psychic being – as well as Hegel's basic thesis concerning the philosophy of nature, that therein a tendency toward coherence and idealization manifests itself in the sense of a (categorically) gradually rising succession of nature: from the separateness of space to the ideality of sensation. In the sense of the double strategy of concretization and foundation it is shown that on the one hand possibilities of philosophical penetration concerning actual empirical-scientific results are opened, and on the other hand – in turn – a re-interpretation of Hegel's theorem on the basis of physical, evolution-theoretical and system-theoretical argumentation also becomes possible. In this mutual crossing-over and elucidation of empirical and Hegelian argumentation not only do perspectives of a new comprehension of nature become visible, but also, at the same time – as an essential consequence of this methodical principle – thoughts on the possibilities of actualizing Hegel's philosophy of nature. (shrink)

This paper challenges the philosophical assumption that bodily sensations are free from normative constraints. It examines the normative status of bodily sensations through two studies: a corpus-linguistic analysis and an experimental investigation. The corpus analysis shows that while emotions are frequently subject to normative judgments concerning their appropriateness, similar attitudes are less evident towards bodily sensations like feelings of pain, hunger and cold. In contrast, however, the experimental study reveals notable differences in conceptions of bodily sensations. (...) It finds that sensations of hunger and cold are occasionally subject to normative assessment, with about half of the participants considering it reasonable to assess these sensations normatively. (shrink)

Deleuze’s philosophy of painting can be seen to pose certain challenges to a phenomenological approach to philosophy. While a phenomenological response to Deleuze’s philosophy is clearly needed, I show in this article how an approach taken in a recent paper by Christian Lotz proves inadequate. Lotz argues that through Deleuze’s refusal to accept the place of representation in art, he is unable to distinguish art from decoration, or to give a coherent account of how the content of art can be (...) represented. I show that this criticism emerges from a misreading of the place of representation in Deleuze’s philosophy. I will argue that by failing to take account of some of the key features of Deleuze’s wider ontology, such as the importance of both the virtual and the actual for his analysis of objects, Lotz’s critique proves unsuccessful. In particular, I want to show that Lotz’s criticisms rest on a failure to attend to the systematic nature of Deleuze’s philosophy, and in particular, the place of Deleuze’s analysis of Bacon within the system as a whole. I will further show that Lotz’s phenomenological defence commits the fallacy of petitio principii, assuming the validity of the phenomenological method in order to justify the phenomenological approach. (shrink)

Unlike other organs that operate continuously, such as the heart and kidneys, many of the operations of the nervous system shut down during sleep. The evolutionarily conserved unconscious state of sleep that puts animals at risk from predators indicates that it is an indispensable integral part of systems operation. A reasonable expectation is that any hypothesis for the mechanism of the nervous system functions should be able to provide an explanation for sleep. In this regard, the semblance hypothesis is examined. (...) Postsynaptic membranes are continuously being depolarized by the quantally released neurotransmitter molecules arriving from their presynaptic terminals. In this context, an incidental lateral activation of the postsynaptic membrane is expected to induce a semblance (cellular hallucination of arrival of activity from its presynaptic terminal, which forms a unit for internal sensation) of the arrival of activity from its presynaptic terminal as a systems property. This restricts induction of semblance to a context of a very high ratio of the duration of the default state of neurotransmitter-induced postsynaptic depolarization to the total duration of incidental lateral activations of the postsynaptic membrane. This requirement spans within a time-bin of a few sleep-wake cycles. Since the duration of quantal release remains maximized, the above requirement can be achieved only by ceiling the total duration of incidental lateral activations of the postsynaptic membrane, which necessitates a state of sleep. (shrink)

A look at Mach's work on monocular stereoscopy with relation to Mach Bands and the sensation of space.