Sensation and Perception

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)

To discover affects within Husserl’s texts designates a difficult investigation; it points to a theme of which these texts were forced to speak, even as they were explicitly speaking of regional ontologies and the foundations of sciences. For we may at first wonder: where can affection find a positive role in the rigor of a pure philosophy that seeks to account for its phenomena from within the immanence of consciousness? Does this not mean that the very passivity and foreignness of (...) affect will be overlooked; will it not be continually linked to a Vorstellung that issues as a ray of the pure ego? That is, will the phenomenological account of affect be reduced to the cognition of an object, as Emmanuel Levinas suggests? Yet there are affects in Husserl’s texts that maintain their autonomy and resist subsumption to an objectivating intentionality.We may see this in the Lectures On the Phenomenology of the Consciousness of Internal Time: in the longitudinal intentionality of retention, through which consciousness becomes aware of its elapsed phases without making them into objects—a passive synthesis that gives the flow of time-constituting consciousness the form of a continually deferred auto-affection.1We find it again as early as the fifth Logical Investigation, 2 providing us with the impetus to radicalize Husserlian phenomenology. (shrink)

I emphasize the difference between bioethics and sciences that are relevant to bioethics on the one hand and the lifeworld on the other hand, to which problems of bioethics apply. The difference between types of experience in the scientific realm and in the lifeworld is reflected by the different definitions of nature they tend to favor. Against this background, I will claim that the object domains of the natural and the artificial are indeed better separated in the context of everyday (...) perception than is commonly assumed in academic discourse. This capacity for differentiation in everyday contexts makes it possible to give weight to the positive connotations of naturalness used against technological interference in nature in the lifeworld discourse. I will start with some preliminary terminological and historical remarks. Then I will turn to possible scientific ways of separating the domains of the natural and the artificial. In everyday practice they usually can be neither reproduced nor understood. This situation has contributed to the need for an explanation of the moral appeal to naturalness that one encounters in the lifeworld. After a discussion of explanations that are given in the bioethical discourse, I will propose a lifeworld concept that allows for the use of a fundamental boundary between the natural and the artificial. (shrink)

In this essay, we draw on John Haugeland’s work in order to argue that Burge is wrong to think that exercises of perceptual constancy mechanisms suffice for perceptual representation. Although Haugeland did not live to read or respond to Burge’s Origins of Objectivity, we think that his work contains resources that can be developed into a critique of the very foundation of Burge’s approach. Specifically, we identify two related problems for Burge. First, if (what Burge calls) mere sensory responses are (...) not representational, then neither are exercises of constancy mechanisms, since the differences between them do not suffice to imply that one is representational and the other is not. Second, taken by themselves, exercises of constancy mechanisms are only derivatively representational, so merely understanding how they work is not sufficient for understanding what is required for something, in itself, to be representational (and thereby provide a full solution to the problem of perceptual representation). (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.

Inducing the rubber hand illusion (RHI) requires that participants look at an imitation hand while it is stroked in synchrony with their occluded biological hand. Previous explanations of the RHI have emphasized multisensory integration, and excluded higher cognitive functions. We investigated the relationship between the RHI and higher cognitive functions by experimentally testing task switch (as measured by switch cost) and mind wandering (as measured by SART score); we also included a questionnaire for attentional control that comprises two subscales, attention-shift (...) and attention-focus. To assess experience of RHI, the Botvinick and Cohen (1998) questionnaire was used and illusion onset time was recorded. Our results indicate that rapidity of onset reliably indicates illusion strength. Regression analysis revealed that participants evincing less switch cost and higher attention-shift scores had faster RHI onset times, and that those with higher attention-shift scores experienced the RHI more vividly. These results suggest that the multi-sensory hypothesis is not sufficient to explain the illusion: higher cognitive functions should be taken into account when explaining variation in the experience of ownership for the rubber hand. (shrink)

Seeing with Ears, Hearing with Eyes. How Technology Molds Synesthesia Within Us -/- The subject of consideration within this lecture is the contribution of existing scientific discoveries on the visual and musical connection within the perceptual plane. Points of reference are the studies of Amir Amedi, Jacob Jolij and Maaieke Meurs, Harry McGurk, as well as, the works of Iwona Sowińska, Roger Scruton, Oliver Sacks, and a cultural analysis of Joshua Bell’s performance. I will also consider how the senses effect (...) each other, pursuing the diversified reception of vision, which consists of the sense of hearing [sic!], on which I would like to focus attention. -/- Paper structure:  Introduction to key concepts in the fields of research and development,  The visual outlook on hearing,  The aural perspective on vision,  Relationships to related sciences,  Summary of multimedia examples,  An attempt to extend the “techno-view” to the auditory senses within synesthesia. (shrink)

Whether perceptual experience represents high-level properties like causation and natural-kind in virtue of its phenomenology is an open question in philosophy of mind. While the question of high-level properties has sparked disagreement, there is widespread agreement that the sensory phenomenology of perceptual experience presents us with low-level properties like shape and color. This paper argues that the relationship between the sensory character of experience and the low-level properties represented therein is more complex than most assume. Careful consideration of mundane examples, (...) like looking at a coin from an oblique angle, show that the low-level properties represented in experience do not necessarily figure in the sensory character of the experience. Furthermore, the sensible properties invoked when characterizing the sensory character of a perceptual experience are not necessarily included in the sensible properties represented in a perceptual experience. On this basis it is argued that perceptual experience has a disunified metaphysics, consisting in distinct sensory and cognitive components. The account is developed in relation to existing unified and disunified accounts, and discussed in terms of its implications for cognitive penetration, the reliability of introspection, the transparency of experience, and cognitive phenomenology. (shrink)

The main thesis of this paper is that two prevailing theories about cognitive penetration are too extreme, namely, the view that cognitive penetration is pervasive and the view that there is a sharp and fundamental distinction between cognition and perception, which precludes any type of cognitive penetration. These opposite views have clear merits and empirical support. To eliminate this puzzling situation, we present an alternative theoretical approach that incorporates the merits of these views into a broader and more nuanced explanatory (...) framework. A key argument we present in favor of this framework concerns the evolution of intentionality and perceptual capacities. An implication of this argument is that cases of cognitive penetration must have evolved more recently and that this is compatible with the cognitive impenetrability of early perceptual stages of processing information. A theoretical approach that explains why this should be the case is the consciousness and attention dissociation framework. The paper discusses why concepts, particularly issues concerning concept acquisition, play an important role in the interaction between perception and cognition. (shrink)

The method of contrast is used within philosophy of perception in order to demonstrate that a specific property could be part of our perception. The method is based on two passages. I argue that the method succeeds in its task only if the intuition of the difference, which constitutes the core of the first passage, has two specific traits. The second passage of the method consists in the evaluation of the available explanations of this difference. Among the three outlined options, (...) I will demonstrate that only in the third option – as we shall see, the case of the scenario that remains the same but is perceived in two different ways by the same perceiver – the intuition purports a difference that posses the necessary characteristics, namely being immediately evident and extremely complex and multifaceted, which determine its tensive nature. The application within auditory perception of this third option will generate two cases, a diachronic one and a synchronic one, which clearly show that we can auditorily perceive causality as a link between two sonorous episodes. The causal explanation is the only possible explanation among the many evaluated within the second passage of the method of contrast. (shrink)

Pitch is an audible quality of sound which can be explained not only in terms of strong correlation with sound waves’ properties, but also by a neat correlation to the properties of the sounding object. This seems to be in favour of the theory of sound labelled “distal view”, according to which sound is the vibration of the sounding object.

I argue that the idea that mental states possess a primitive intentionality in virtue of which they are able to represent or ‘intend’ putative particulars derives largely from Brentano‘s misinterpretation of Aristotle and the scholastics, and that without this howler the application of intentionality to phenomenal content would never have gained currency.

Many people have recently argued that we need to distinguish between experiences and seemings and that this has consequences for views about how perception provides evidence. In this article I spell out my take on these issues by doing three things. First, I distinguish between mere sensations like seeing pitch black all around you and perceptual experiences like seeing a red apple. Both have sensory phenomenology in presenting us with sensory qualities like colors, being analog in Dretske's sense, and being (...) fine-grained. However, only the latter have furthermore a perceptual phenomenology characterized by objectification and related dualities of perspectivality/completion and variation/constancy. Second, I elaborate on the reasons for thinking that both mere sensations and perceptual experiences need to be distinguished from accompanying seemings that passively assign things into conceptual categories and thereby tell you something about them. For example, when you look at a red apple and have the relevant recognitional abilities it will also normally seem to you that this is an apple. Finally, I argue that the best version of the popular dogmatist view about evidence is one which claims that it's neither experiences nor seemings by themselves, but rather the right sorts of composites of experiences and seemings that provide evidence. (shrink)

Do we perceptually experience meanings? For example, when we hear an utterance of a sentence like ‘Bertrand is British’ do we hear its meaning in the sense of being auditorily aware of it? Several philosophers like Tim Bayne and Susanna Siegel have suggested that we do (Bayne 2009: 390, Siegel 2006: 490-491, 2011: 99-100). They argue roughly as follows: 1) experiencing speech/writing in a language you are incompetent in is phenomenally different from experiencing speech/writing you are competent in; 2) this (...) contrast is best explained by the fact that we experience meanings in the latter case, but not the former. In contrast, in an important recent discussion Casey O’Callaghan has argued that we do not (O’Callaghan 2011). He responds to the above contrast argument by claiming that this phenomenal contrast is instead best explained by the fact that we hear language-specific phonological properties in the latter case, but not in the former. In this paper I argue that O’Callaghan’s response to the popular contrast argument is too limited in scope, provide a more general response, and present a new case against experiencing meanings. (shrink)

I identify one particular strand of thought in Thomas Nagel's ‘What Is It Like to Be a Bat?’, which I think has helped shape a certain conception of perceptual consciousness that is still prevalent in the literature. On this conception, perceptual consciousness is to be explained in terms of a special class of properties perceptual experiences themselves exhibit. I also argue that this conception is in fact in conflict with one of the key ideas that supposedly animates Nagel's argument in (...) ‘What Is It Like to Be a Bat?', which is the idea of an intimate connection between the idea of consciousness and that of a point of view. (shrink)

Suppose you're unable to discriminate the colors of two objects. According to the triangulation view, their colors might nonetheless look different to you, and that's something you can discover as a result of further comparisons. The primary motivation for this view is its apparent ability to solve a puzzle involving a series of pairwise indiscriminable objects. I argue that, due to visual noise, the triangulation view doesn't really solve the puzzle.

Following Mary Douglas' conviction that "dirt is never an isolated event", the present study aims at a systematic analysis of bodily projections of good and poor health (bacteria, diseases, im/purity etc.) into philological taxonomies of Republican China. Embedded in a global Renaissance discourse, modern Chinese representations of un/healthy language and un/healthy literature provided a system according to which the whole body of the national cultural heritage could be reexamined quickly and effectively.

In disagreement with Claudia Baracchi’s controversial thesis that there is a “simultaneity and indissolubility” if not an “identity” of intelligence (nous) and perception (aisthēsis) at the core of Aristotle’s philosophy, I will argue that Aristotle maintains a fundamental distinction between these cognitive faculties. My goal in this paper is to examine specific parts of two central and complex passages, VI.8, 1142a12-30 and VI.11, 1143a33-b15, from the Nicomachean Ethics to show that Baracchi’s view is unpersuasive. I will show that Aristotle considers (...) nous to be a different capacity than mere perception and one through which particulars and indemonstrable principles become intelligible. Moreover, I will show that Aristotle considers that the objects of nous differ in kind from those that sensation (our senses) and perception (inference from our senses) grasp. After examining critically Baracchi’s thesis in light of a close reading of those two relevant passages, I will conclude the paper by showing the significance of Aristotle’s claim that a state is defined in terms of its objects of apprehension for understanding the distinction between nous and aisthēsis. (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.

How many senses do humans possess? Five external senses, as most cultures have it—sight, hearing, touch, smell, and taste? Should proprioception, kinaesthesia, thirst, and pain be included, under the rubric bodily sense? What about the perception of time and the sense of number? Such questions reduce to two. 1. How do we distinguish a sense from other sorts of information-receiving faculties? 2. By what principle do we distinguish the senses? Aristotle discussed these questions in the De Anima. H. P. Grice (...) revived them in 1967. More recently, they have taken on fresh interest as a result of a collection of essays edited by Fiona Macpherson. This entry reviews some approaches to these questions and advances some new ideas for the reader’s consideration. It proposes that the senses constitute an integrated learning system, membership in which answers question 1. It also proposes that the modalities can be distinguished from one another in two ways, by the means of information pick-up and by the kinds of activity that a perceiver undertakes to make use of them. (shrink)

The consensus in contemporary philosophy of mind is that how a perceptual experience represents the world to be is built into its sensory phenomenology. I defend an opposing view which I call ‘moderate separatism’, that an experience's sensory phenomenology does not determine how it represents the world to be. I argue for moderate separatism by pointing to two ordinary experiences which instantiate the same sensory phenomenology but differ with regard to their intentional content. Two experiences of an object reflected in (...) a mirror can possess the same spatial phenomenology while representing that object to occupy different spatial locations. So, contrary to the current consensus, the representation of spatial location is not fixed by an experience's sensory phenomenology. (shrink)