One's contemporaneous conscious mental states seem bound in a single, unified experience. Dainton argues, against what he calls the S-Thesis, that we cannot explain such co-consciousness in terms of states' being located in a single phenomenal space, a functional space posited to explain our ability to locate ourselves relative to perceived stimuli. But Dainton's argument rests on a conflation of egocentric and allocentric self-localizing, and thus fails to undermine the S-Thesis. Nevertheless, experiments on visual neglect suggest one (...) can have unconscious mental states that are located in the same phenomenal field, so the S-Thesis fails after all. I examine a modified version of the S-Thesis according to which mental states are co-conscious when one is aware of them via a higher-order sensation that represents them as located in the same phenomenal field. But among other problems, this view fails to explain the co-consciousness of intentional states, which aren't located in phenomenal fields. Finally, I argue that a higher-order-thought model of consciousness best explains the apparent unity of experience in terms of one's tacit assumption that all the first-person thoughts in virtue of which one is conscious of one's mental states refer to the same individual. (shrink)

Pain is often used as the paradigmatic example of a phenomenal kind with a phenomenal quality common and unique to its instantiations. Philosophers have intensely discussed the relation between the subjective feeling, which unites pains and distinguishes them from other experiences, and the phenomenal properties of sensory, affective, and evaluative character along which pains typically vary. At the center of this discussion is the question whether the phenomenal properties prove necessary and/or sufficient for pain. In the (...) empirical literature, sensory, affective, and evaluative properties have played a decisive role in the investigation of psychophysical correspondence and clinical diagnostics. This paper addresses the outlined philosophical and empirical issues from a new perspective by constructing amultidimensional phenomenal spacefor pain. First, the paper will construe the phenomenal properties of pains in terms of a property space whosestructurereflects phenomenal similarities and dissimilarities by means of spatial distance. Second, philosophical debates on necessary and sufficient properties are reconsidered in terms of whether there is a phenomenal space formed of dimensions along which all and only pains vary. It is concluded that there is no space of this kind and, thus, that pain constitutes aprimitivephenomenal kind that cannot be analyzed entirely in terms of its varying phenomenal properties. Third, the paper addresses theutilityof continued reference to pain and its phenomenal properties in philosophical and scientific discourses. It is argued that numerous insights into the phenomenal structure of pain can be gained that have thus far received insufficient attention. (shrink)

Pain is often used as the paradigmatic example of a phenomenal kind with a phenomenal quality common and unique to its instantiations. Philosophers have intensely discussed the relation between the subjective feeling, which unites pains and distinguishes them from other experiences, and the phenomenal properties of sensory, affective, and evaluative character along which pains typically vary. At the center of this discussion is the question whether the phenomenal properties prove necessary and/or sufficient for pain. In the (...) empirical literature, sensory, affective, and evaluative properties have played a decisive role in the investigation of psychophysical correspondence and clinical diagnostics. This paper addresses the outlined philosophical and empirical issues from a new perspective by constructing a multidimensional phenomenal space for pain. First, the paper will construe the phenomenal properties of pains in terms of a property space whose structure reflects phenomenal similarities and dissimilarities by means of spatial distance. Second, philosophical debates on necessary and sufficient properties are reconsidered in terms of whether there is a phenomenal space formed of dimensions along which all and only pains vary. It is concluded that there is no space of this kind and, thus, that pain constitutes a primitive phenomenal kind that cannot be analyzed entirely in terms of its varying phenomenal properties. Third, the paper addresses the utility of continued reference to pain and its phenomenal properties in philosophical and scientific discourses. It is argued that numerous insights into the phenomenal structure of pain can be gained that have thus far received insufficient attention. (shrink)

This paper argues that phenomenal or internal metrical spaces are redundant posits. It is shown that we need not posit an internal space-time frame, as the physical space-time suffices to explain geometrical perception, memory and planning. More than the internal space-time frame, the idea of a phenomenal colour space has lent credibility to the idea of internal spaces. It is argued that there is no phenomenal colour space that underlies the various psychophysical (...) colour spaces; it is parasitic upon physical and psychophysical colour spaces. The argumentation is further extended to other sensory spaces and generalised quality spaces. (shrink)

Meehan finds fault with a number of my arguments, and proposes that better solutions to the problems I was addressing are available if we adopt a higher-order theory of consciousness. I start with some general remarks on theories of this sort. I connect what I had to say about the A-thesis with different forms of higher-order sense theories, and explain why I ignored higher-order thought theories altogether: there are compelling grounds for thinking they cannot provide a viable account of (...) class='Hi'>phenomenal unity in phenomenal terms. Meehan. (shrink)

Concepts of space and time are widely developed in physics. However, there is a considerable lack of biologically plausible theoretical frameworks that can demonstrate how space and time dimensions are implemented in the activity of the most complex life-system – the brain with a mind. Brain activity is organized both temporally and spatially, thus representing space-time in the brain. Critical analysis of recent research on the space-time organization of the brain’s activity pointed to the existence of (...) so-called operational space-time in the brain. This space-time is limited to the execution of brain operations of differing complexity. During each such brain operation a particular short-term spatio-temporal pattern of integrated activity of different brain areas emerges within related operational space-time. At the same time, to have a fully functional human brain one needs to have a subjective mental experience. Current research on the subjective mental experience offers detailed analysis of space-time organization of the mind. According to this research, subjective mental experience (subjective virtual world) has definitive spatial and temporal properties similar to many physical phenomena. Based on systematic review of the propositions and tenets of brain and mind space-time descriptions, our aim in this review essay is to explore the relations between the two. To be precise, we would like to discuss the hypothesis that via the brain operational space-time the mind subjective space-time is connected to otherwise distant physical space-time reality. (shrink)

The dimensional structure of phenomenal space and its relation to the brain have not been widely focused on in brain and consciousness studies. This paper postulates that focusing on the dimensional structures displayed in the relation between phenomenal space and the brain is necessary for understanding the integration of distributed brain events in binding. A related issue is why items and events of phenomenal space and consciousness as they appear in experience seem to be (...) beyond the reach of natural scientific empirical observation. The proposed solution to these issues is postulated to require a fourth spatial dimension. A transcendence principle of detection (TPD) is introduced, which states that transcendent degrees of freedom of an n+1 dimension are a necessary condition for experiencing or detecting an n-dimensionally extended physical structure as an n-dimensionally extended phenomenal structure. It is postulated that the phenomenal outcome of binding, i.e. the threedimensionally distributed and extended phenomenal structure of human experience, is the expected first-person outcome of threedimensionally distributed neurophysical structures being monitored at the domain of a fourth spatial dimension. (shrink)

Definitions of phenomenal types (Nelson Goodman’s definition of qualia, Sydney Shoemaker’s phenomenal types, Austen Clark’s physicalist theory of qualia) imply that numerically distinct experiences can be type-identical in some sense. However, Goodman also argues that objects cannot be replicated in respect of continuous and densely ordered types. In that case, how can phenomenal types be defined for sizes, shapes and colours, which appear to be continuously ordered types? Concentrating on size, I will argue for the following points. (...) (§2) We cannot deny the possibility of replication in respect of dense types, because this would imply that particulars have determinable sizes, shapes and colours. (§3) Phenomenal sizes and shapes are determinable types; objective, or super-determinate, sizes and shapes are unknowable. (§4) We can define and know, prior to verification, groupings of objective sizes for which indiscriminability is transitive. (§5) Phenomenal identity has to be defined on the basis of these transitive groupings, because finer-grained criteria (such as Goodman’s) lead to definition of objective identity. The quality space of phenomenal types consists of overlapping but not dense types, and this prevents a collapse of phenomenal types. (shrink)

This article is devoted to the analysis of the socio-semiotic theory of M.Foucault, which allows clarifying the phenomenal horizon in the socio-political space. Social semiotics is viewed as a grammar of a separate sign system that describes the area of a specific communicative phenomenon controlled by a system of meanings. Power, using semiotic techniques, marking space, creates a disciplined body, a disciplined person, and a disciplined consciousness. The means of coercion reveal those on whom they influence but (...) also manifest the very place of Power. At the same time, Power, functioning as a draft mechanism, attracts and extracts both the norm and deviations, which it tirelessly monitors. Specific ways of speaking, pronouncing, and certain constructions of signs and symbols that shape the social space reveal the space for the manifestation of Power. Through the use of the technique of signs that permeates the entire social space, Power is economically and efficiently distributed throughout the body of society, codifies all possible behavior, and therefore reduces the indefinite area of all possible actions. All human gestures and actions can be interpreted as semantic units that can be rationally explained and systematized. (shrink)

This paper examines the possibility of finding evidence that phenomenal consciousness is independent of access. The suggestion reviewed is that we should look for isomorphisms between phenomenal and neural activation spaces. It is argued that the fact that phenomenal spaces are mapped via verbal report is no problem for this methodology. The fact that activation and phenomenal space are mapped via different means does not mean that they cannot be identified. The paper finishes by examining (...) how data addressing this theoretical question could be obtained. (shrink)

This is the first in a series of instalments aiming at a minimal model explanation for conscious experience, taking the phenomenal character of “pure consciousness” or “pure awareness” in meditation as its entry point. It develops the concept of “minimal phenomenal experience” as a candidate for the simplest form of consciousness, substantiating it by extracting six semantic constraints from the existing literature and using sixteen phenomenological case-studies to incrementally flesh out the new working concept. One empirical hypothesis is (...) that the phenomenological prototype of “pure awareness”, to which all such reports refer, really is the content of a predictive model, namely, a Bayesian representation of tonic alertness. On a more abstract conceptual level, it can be described as a model of an unpartitioned epistemic space. (shrink)

In the book "Conceptual Spaces: the Geometry of Thought" [2000] Peter Gärdenfors proposes a new framework for cognitive science. Complementary to symbolic and subsymbolic [connectionist] descriptions, conceptual spaces are semantic structures — constructed from empirical data — representing the universe of mental states. We argue that Gärdenfors' modeling can be used in consciousness research to describe the phenomenal conscious world, its elements and their intrinsic relations. The conceptual space approach affords the construction of a universal state space (...) of human consciousness, where all possible kinds of human conscious states could be mapped. Starting from this approach, we discuss the inclusion of feelings and emotions in conceptual spaces, and their relation to perceptual and cognitive states. Current debate on integration of affect/emotion and perception/cognition allows three possible descriptive alternatives: emotion resulting from basic cognition; cognition resulting from basic emotion, and both as relatively independent functions integrated by brain mechanisms. Finding a solution for this issue is an important step in any attempt of successful modeling of natural or artificial consciousness. After making a brief review of proposals in this area, we summarize the essentials of a new model of consciousness based on neuro-astroglial interactions. (shrink)

Chalmers (2002) argues against physicalism in part using the premise that no truth about consciousness can be deduced a priori from any set of purely structural truths. Chalmers (2012) elaborates a detailed definition of what it is for a truth to be structural, which turns out to include spatiotemporal truths. But Chalmers (2012) then proposes to define spatiotemporal terms by reference to their role in causing spatial and temporal experiences. Stoljar (2015) and Ebbers (Ms) argue that this definition of spatiotemporal (...) terms allows for the trivial falsification of Chalmers (2002)’s premise about structure and consciousness. I show that this result can be avoided by tweaking the relevant premise, and moreover that this tweak is well-motivated and not ad hoc. (shrink)

This chapter provides an overview of the phenomenology of size perception and the use of instructions to tease apart phenomenal and cognitive aspects. It develops his own recent proposals concerning the geometry of visual space. The chapter proposes that visual space is contracted along the lines of sight. This contraction would explain the apparent convergence of railway tracks, but without invoking a “proximal mode” experience. Parallel railway tracks receding into the distance project converging lines onto the retinas. (...) A true proximal mode representation would show these lines converging as if in a vertical plane. But we experience them as converging while also receding in depth along the ground. The chapter suggests that this calls for a third geometry of visual space, intermediate between a linear perspective projection and full phenomenal constancy. The chapter attributes reports of full constancy to cognitive factors. size perception, visual space, geometry, lines of sight, proximal mode, phenomenal constancy. (shrink)

Chalmers argues against physicalism using the premise that no truth about consciousness is deducible a priori from purely structural truths, and later defines what it is for a truth to be structural, which turns out to include spatiotemporal truths. But Chalmers then defines spatiotemporal terms by reference to their role in causing spatiotemporal experiences. Stoljar and Ebbers argue that these definitions allow for the trivial falsification of Chalmers premise about structure and consciousness. I show that this result can be avoided (...) by tweaking the relevant premise, and that this tweak is not ad hoc. (shrink)

This paper investigates the significance of T-duality in string theory: the indistinguisha- bility with respect to all observables, of models attributing radically different radii to space – larger than the observable universe, or far smaller than the Planck length, say. Two interpretational branch points are identified and discussed. First, whether duals are physically equivalent or not: by considering a duality of the familiar simple harmonic oscillator, I argue that they are. Unlike the oscillator, there are no measurements ‘outside’ string (...) theory that could distinguish the duals. Second, whether duals agree or disagree on the radius of ‘target space’, the space in which strings evolve according to string theory. I argue for the latter position, because the alternative leaves it unknown what the radius is. Since duals are physically equivalent yet disagree on the radius of target space, it follows that the radius is indeterminate between them. Using an analysis of Brandenberger and Vafa (1989), I explain why – even so – space is observed to have a determinate, large radius. The conclusion is that observed, ‘phenomenal’ space is not target space, since a space cannot have both a determinate and indeterminate radius: instead phenomenal space must be a higher-level phenomenon, not fundamental. (shrink)

There is an apparent tension in Shepherd’s accounts of space and time. Firstly, Shepherd explicitly claims that we know that the space and time of the unperceived world exist because they cause our phenomenal experience of them. Secondly, Shepherd emphasizes that empty space and time do not have the power to effect any change in the world. My proposal is that for Shepherd time has exactly one causal power: to provide for the continued existence of self-same (...) or changing objects. Because Shepherd takes causation to be a relation whereby two objects combine to form a third, their effect, whenever we perceive a continually existing object, since time is a proper part of such objects, our perception of time is caused by time itself. Likewise, space’s causal power is to provide for the possibility of the motion or rest of objects, and so when we perceive objects with space as a proper part, we come into causal contact with space. (shrink)

This paper describes a new theory of consciousness based on previous work by C.D. Broad, H.H. Price, Andrei Linde and others. This hypothesis states that the Universe consists of three fundamental entities - space-time, matter and consciousness, each with their own degrees of freedom. The paper pays particular attention to three areas that impact on this theory: the demonstration by neuroscience and psychophysics that we do not perceive the world as it actually is but as the brain computes it (...) most probably to be; the need to delineate between phenomenal space-time and physical space-time. Recent theories in physics that suggest that the Universe has more than three spatial dimensions are relevant here; the role of consciousness in the block Universe described by Special Relativity. The integration of these topics suggests a new physical theory of the nature of consciousness. (shrink)

One popular materialist response to the explanatory gap identifies phenomenal concepts with type-demonstrative concepts. This kind of response, however, faces a serious challenge: that our phenomenal concepts seem to provide a richer characterization of their referents than just the demonstrative characterization of 'that quality'. In this paper, I develop a materialist account that beefs up the contents of phenomenal concepts while retaining the idea that these contents contain demonstrative elements. I illustrate this account by focusing on our (...) phenomenal concepts of phenomenal colour. The phenomenal colours stand in a similarity space relative to one another in virtue of being complex qualities—qualities that contain saturation, lightness, and various aspects of hue as component elements. Our phenomenal concepts, in turn, provide a demonstrative characterization of each of these component elements as well as a description of how much of that element is present in a given phenomenal colour. The result is an account where phenomenal concepts contain demonstrative elements and yet provide a significantly richer characterization of the intrinsic nature of their referents than just 'that quality'. (shrink)

When cognitive scientists apply computational theory to the problem of phenomenal consciousness, as many of them have been doing recently, there are two fundamentally distinct approaches available. Either consciousness is to be explained in terms of the nature of the representational vehicles the brain deploys; or it is to be explained in terms of the computational processes defined over these vehicles. We call versions of these two approaches _vehicle_ and _process_ theories of consciousness, respectively. However, while there may be (...) space for vehicle theories of consciousness in cognitive science, they are relatively rare. This is because of the influence exerted, on the one hand, by a large body of research which purports to show that the explicit representation of information in the brain and conscious experience are _dissociable_, and on the other, by the _classical_ computational theory of mind – the theory that takes human cognition to be a species of symbol manipulation. But two recent developments in cognitive science combine to suggest that a reappraisal of this situation is in order. First, a number of theorists have recently been highly critical of the experimental methodologies employed in the dissociation studies – so critical, in fact, it’s no longer reasonable to assume that the dissociability of conscious experience and explicit representation has been adequately demonstrated. Second, classicism, as a theory of human cognition, is no longer as dominant in cognitive science as it once was. It now has a lively competitor in the form of _connectionism; _and connectionism, unlike classicism, does have the computational resources to support a robust vehicle theory of consciousness. In this paper we develop and defend this connectionist vehicle theory of consciousness. It takes the form of the following simple empirical hypothesis: _phenomenal experience consists in the explicit_ _representation of information in neurally realized PDP networks_.. (shrink)

Conspectus of part of John R. Smythies' Analysis of Perception (1956). It presents a summary of his ideas on phenomenal space – the space of one’s imagination, dreams, psychedelic experiences, somatic sensations, visions, hynagogia, etc. – and its relation to physical space.

Commentary on Charles Siewert's The Significance of Consciousness (Princeton, 1998). I discuss three issues about the relation of phenomenal consciousness, in the sense Siewert isolates, to intentionality. The first is whether, contrary to Siewert, phenomenal consciousness requires higher-order representation. The second is whether intentional features of conscious states are identical with phenomenal features, as Siewert argues, or merely conceptually supervene on them, with special attention to cross modal representations of objects in space. The third is whether (...) phenomenal features are identical with what we can have first person access to, with special attention to features of thoughts that are individuated by reference to the self and the present time. (shrink)

Ayahuasca, a hallucinogen with profound consciousness- altering properties, has been increasingly utilized in recent studies (e.g., Strassman, 2001; Shanon, 2002a,b). However, other than Shanon's recent work, there has been little attempt to examine the effects of ayahuasca on perceptual, affective and cognitive experience, its relation to fringe consciousness or to pertinent personality variables. Twenty-one volunteers attending a seminar on ayahuasca were administered personality measures and a semi-structured interview about phenomenal qualities of their experience. Ayahuasca ingestion was associated with profound (...) alterations of temporal- spatial experiences including expansive space and slowed time. Ayahuasca use was also associated with positive emotional states, higher levels of fantasy proneness and psychological absorption and a greater openness to mystical experiences. Conversely, quickened time was associated with negative emotionality. The results are discussed within a multi-faceted model of fringe consciousness with a particular emphasis on Hunt's (1995) models of cross-modal translation as the basis for higher-order symbolic cognition and support James' (1890/1950) contention that fringe consciousness is essential to human cognition. (shrink)

In this paper, I offer a systematic account of Kant’s view on ‘phenomenal substance’. Several studies have recently analyzed Kant’s notion of substance. However, I submit that more needs to be said about how this notion is reconceptualized within the critical framework to vindicate a genuine and legitimate sense of substance in the phenomenal realm. More specifically, I show that Kant’s transcendental idealism does not commit him to a rejection of substantiality in phenomena. Rather, Kant isolates a general (...) notion of substance (as ultimate subject) and argues that (i) the relationality of phenomena is compatible with this notion; and that (ii) matter and all its parts are the ultimate subjects of everything existing in space (as what is independently movable in space). I suggest that vindicating a genuine and legitimate notion of phenomenal substance has far-ranging consequences for the interpretation of Kant’s empirical realism. (shrink)

Intentionalism is the view that the phenomenal character of a conscious experience is wholly determined by, or even reducible to, its representational content. In this essay I put forward a version of intentionalism that allows (though does not require) the reduction of phenomenal character to representational content. Unlike other reductionist theories, however, it does not require the acceptance of phenomenal externalism (the view that phenomenal character does not supervene on the internal state of the subject). According (...) the view offered here, phenomenal characters essentially represent subject-environment relations that are relevant to the possibilities for causal interaction between the subject and the environment; relations of the kind that J. J. Gibson dubbed affordances. I argue for this view chiefly through an examination of spatial perception, though other cases are also considered. The view assumes that a phenomenal character has an essential functional role; though it need not be assumed that a functional role is sufficient for a phenomenal character. (shrink)

This paper, which has both a historical and a polemical aspect, investigates the view, dominant throughout the eighteenth and nineteenth centuries, that the sense of sight is, originally, not phenomenally three-dimensional in character, and that we must come to interpret its properly two-dimensional data by reference to the sense of 'touch'. The principal argument for this claim, due to Berkeley, is examined and found wanting. The supposedly confirming findings concerning 'Molyneux subjects' are also investigated and are shown to be either (...) irrelevant or disconfirming. Recent investigations on infant and neonatal perception are discussed and are also found to be disconfirming. An innatist version of the theory is then considered and is shown to be undermined by the largely 'Gibsonian' character of early space-perception. Finally three recent arguments in favour of the theory - two from psychologists, one from a philosopher - are considered and answered. (shrink)

In this chapter, data concerning the development of principal aspects of vision is reviewed. First, the development of colour vision and luminance perception is discussed. Relevant data accumulated so far indicates that perception of colour and luminance is present by 6-9 months of age. The presence of typical color illusions at this age suggests that the phenomenal character of color experience is comparable to that of adults well before the first birthday. Thus it seems plausible that color perception develops (...) on the grounds of genetically preprogrammed maturation, in which perceptual learning and plasticity play a limited role. This claim also seems to be supported by case studies of newly sighted patients. On the other hand, perceptual integration of edges and forms in the visual environment as well as the development of binocular vision, and the perception of ambiguous figures seem to depend crucially on early perceptual learning. Both developmental and clinical data indicate a more significant involvement of perceptual learning in such mid-level and higher level perceptual phenomena. (shrink)

This paper argues that a common form of representationalism has trouble accommodating empirical findings about visual space perception. Vision science tells us that the visual system systematically gives rise to different experiences of the same spatial property. This, combined with a naturalistic account of content, suggests that the same spatial property can have different veridical looks. I use this to argue that a common form of representationalism about spatial experience must be rejected. I conclude by considering alternatives to this (...) view. (shrink)

Over a decade ago, I introduced a large-scale theory of the cognitive brain which explained for the first time how the human brain is able to create internal models of its intimate world and invent models of a wider universe. An essential part of the theoretical model is an organization of neuronal mechanisms which I have named the Retinoid Model (Trehub, 1977, 1991). This hypothesized brain system has structural and dynamic properties enabling it to register and appropriately integrate disparate foveal (...) stimuli into a perspectival, egocentric representation of an extended 3D world scene including a neuronally-tokened locus of the self which, in this theory, is the neuronal origin of retinoid space. As an integral part of the larger neuro-cognitive model, the retinoid system is able to perform many other useful perceptual and higher cognitive functions. In this paper, I draw on the hypothesized properties of this system to argue that neuronal activity within the retinoid structure constitutes the phenomenal content of consciousness and the unique sense of self that each of us experiences. -/- Trehub, A. (1977). Neuronal models for cognitive processes: Networks for learning, perception, and imagination. _Journal of Theoretical Biology_ 65: 141-169. -/- Trehub, A. (1991). _The Cognitive Brain_. MIT Press. -/- . (shrink)

The Hard Problem of the mind is addressed and it is argued that physical-phenomenal property identities have the same status as the identification of an ostended bit of physical space and the coordinates assigned the spot on a map of the terrain. It is argued, that is to say, that such identities are, or follow from, stipulations which interpret the map.

Since Twin Earth was discovered by American philosophical-space explorers in the 1970s, the domain of.

I argue that when empty space is seen in mirrors—that is, when perceptual specular experience is veridical—specular empty space is, like pictorial empty space, seen-in. I explain how the phenomenal expansiveness of specular reflections can nonetheless be reconciled with the see-through look of specular space.

Some recently popular accounts of perception account for the phenomenal character of perceptual experience in terms of the qualities of objects. My concern in this paper is with naturalistic versions of such a phenomenal externalist view. Focusing on visual spatial perception, I argue that naturalistic phenomenal externalism conflicts with a number of scientific facts about the geometrical characteristics of visual spatial experience.

This is an open peer commentary on O’Brien & Opie (1999) “A connectionist theory of phenomenal experience”, published as a target article in the Behavioral and Brain Sciences. O’Brien & Opie defend a “vehicle” rather than a “process” theory of consciousness largely on the grounds that only conscious information is “explicit”. I argue that preconscious and unconscious representations can be functionally explicit (semantically well-formed and causally active). I also suggest that their analysis of how neural activation space mirrors (...) the information structure of phenomenal experience fits more naturally into a dual-aspect theory of information than into their reductive physicalism. (shrink)

In the Logical Investigations, Ideas I and many other texts, Husserl maintains that perceptual consciousness involves the intentional “animation” or interpretation of sensory data or hyle, e.g., “color-data,” “tone-data,” and algedonic data. These data are not intrinsically representational nor are they normally themselves objects of representation, though we can attend to them in reflection. These data are “immanent” in consciousness; they survive the phenomenological reduction. They partly ground the intuitive or “in-the-flesh” aspect of perception, and they have a determinacy of (...) character that we do not create but can only discover. This determinate, non-representational stratum of perceptual consciousness also serves as a bridge between consciousness and the world beyond it. I articulate and defend this conception of perceptual consciousness. I locate the view in the space of contemporary positions on phenomenal character and argue for its superiority. I close by briefly arguing that the Husserlian account is perfectly compatible with physicalism (this involves disarming the Grain Problem). (shrink)

I argue that conscious visual experience consists in a direct and noninferential grasp of the way one’s current perceptual contact with the environment poises one to pursue various intentional plans, goals and projects. I show that such a view of visual consciousness is supported by current work in cognitive neuroscience, affords a compelling account of colour perception, and suggests a way to bridge the ‘explanatory gap’ between consciousness and the language of the natural sciences. In chapter 1, I examine the (...) reasoning that leads to the appearance of an explanatory gap between the phenomenal and the physical in more detail, and set out the constraints on a solution that our discussion of the problem has imposed. I then sketch the two rival takes on the relationship between perception and action mentioned above – adjudicating between these two theories is the task of the next two chapters, and is a recurring theme throughout. Chapter 2 moves on to discuss some recent work in the neuropsychology of vision and what it might suggest about the functional role of conscious vision, and the first half of chapter 3 considers two puzzle cases concerning colour perception. Each of these discussions turns out to constitute a source of support for the actionspace view that visual perception consists in a grasp of the practical consequences of sensation, and the second half of chapter 3 sets out this view and responds to an initial range of questions and objections it might face. Chapter 4 illustrates our view via a discussion of colour perception, and chapter 5 discusses the type of grasp of practical consequences that is necessary for perceptual sensitivity to issue in conscious experience. By chapter 6, we are in a position to see how the action-space approach can help close the explanatory gap for phenomenal consciousness, and our final chapter sets out how I think this should be done. I conclude with a brief discussion of further questions and prospects for the action-space approach. (shrink)

L’objet de cet article n’est pas de répondre à une question de nature physique ou métaphysique : « qu’est-ce que l’espace? », mais de se concentrer sur un problème pragmatique : « quand interprétons-nous l’espace? ». Dans ses trois dimensions (le corps propre, la chose, le social), l’espace devient interprétable quand il a perdu ses repères habituels, quand nous sommes confrontés à des phénomènes de désorientation, quand nous sommes face à des espaces inconnus, étranges ou étrangers. À la différence d’une (...) herméneutique de l’espace qui se focalise sur les technologies savantes de déchiffrement de signes, l’article donne la priorité à une anthropologie interprétative de la spatialité qui met en lumière les technologiques ordinaires de dévoilement du sens. À une herméneutique de l’espace qui tire son modèle du texte, la contribution ajoute une analytique interprétative d’une spatialité mouvante, irréductible à toute inscription comme expression durablement fixée. (shrink)

Visual space can be distinguished from physical space. The first is found in visual experience, while the second is defined independently of perception. Theorists have wondered about the relation between the two. Some investigators have concluded that visual space is non-Euclidean, and that it does not have a single metric structure. Here it is argued that visual space exhibits contraction in all three dimensions with increasing distance from the observer, that experienced features of this contraction are (...) not the same as would be the experience of a perspective projection onto a fronto-parallel plane, and that such contraction is consistent with size constancy. These properties of visual space are different from those that would be predicted if spatial perception resulted from the successful solution of the inverse problem. They are consistent with the notion that optical constraints have been internalized. More generally, they are also consistent with the notion that visual spatial structures bear a resemblance relation to physical spatial structures. This notion supports a type of representational relation that is distinct from mere causal correspondence. The reticence of some philosophers and psychologists to discuss the structure of phenomenal space is diagnosed in terms of the simple materialism and the functionalism of the 1970s and 1980s. (shrink)

The paper investigates Maurice Merleau-Ponty’s discussion of body and space and Gilles Deleuze’s reading of Francis Bacon’s work, in order to derive a renegotiated interrelation between habitual body, phenomenal space, preferential plane and constructive line. The resulting system is ap- plied as a filter to understand the sartorial fashion of Rei Kawakubo and Hussein Chalayan and their potential as a spatial prosthesis: the operative third skin. If the evolutionary nature of culture demands a constant change, how does (...) the surface of a third skin, which embodies the generative of stable/ unstable, respond to changes of context? The fleeting, shifting conditions of contemporary culture/ lifestyle rely upon, result in, and reflect one constant, change: change of working conditions, family structures, modes of inhabitation, relation networks, of userprofile and identity, of social and territorial boundaries. We occupy the shift- ing spatial parameters of a transitional supermodern environment. Culture, as enacted or embodied through each of these fields, is regulated by a number of abstract and factual variables that interplay constantly: time, space, movement, surface, individual, and data. Elizabeth Grosz argues that culture is an evolutionary effect: it regenerates itself in order to ensure the survival of the species. Each “prosthetic” expression of culture – language, fashion, architecture, etc. – changes repeatedly. Here change is not an end in itself, but a means. And the most successful prosthesis may not be the one that is able to answer the largest number of challenges, but one which itself undergoes a process of learning, self-modification, and differentiation – in short, a process of evolution. Any prosthesis is by nature an extension of the body. In the case of architecture and fashion the prosthesis addressing change is most often external to the body – a “cultural fur” or a surface phenomenon, that is, a highly profiled supplementary skin. As with all prostheses, their respective life-span depends on their ability to reflect a change in context and value systems. They are adapted or updated, if not, they vanish. Any situation of change is processed as a differentiation between the actual and the virtual of a given context. Grosz identifies distinctions between the actual and virtual, the real and the possible: the possible is a preformed real that has not yet received its final materiality, and thus delineates a range of options of becoming. The real is the blueprint of the possible, negotiated by factual limitations, and it is conjoint with the actual through a process of differentiation and divergence. The virtual comprises alternate variations of the actual, it defines a realm of deviation from the blueprint. In order to be responsive to change, the balance between the actual and virtual thus must be rendered unstable: “The virtual requires the actual to diverge, to differentiate itself, to proceed by way of division and disruption, forging modes of actualisation that will transform this virtual into others unforeseen or uncontained within it.” 4 The integration of the virtual allows a re-ordering of the blueprint, a return to the crossroad of possibilities, unlimiting and processing an alternative real, and establishing a state of continual change. A repeated change – not as a choice between a number of options but as a gradual process – marks the moment of evolution, and requires a dynamic system. Such a dynamic can be rendered as an adaptable, flexible, modular, mobile, or morphing system of change. The key lies with the fluency and ability of adaptation for the proposed differentiation between actual and virtual – thus it is an elastic change that is required. The nature of this elasticity is encoded in a repeated repositioning of the variables: a constant fine-tuning of a maximum number of parameters that engineer, alter and define the blueprint. When looking for a dynamic system that incorporates a transformation of skin or space, we are in search of dynamics through an operative surface, controlled by means of the constructive line. Both operative surface and constructive line are generative methods for the formation and form finding of the second and third skin of sartorial fashion and architecture respectively, as they both produce inhabitable or wearable envelopes with a specific responsiveness. Both professions share communication, coding and signage, form information programs, pattern charts, volume outlines, texture fields, surface operations, and implement electronic or digital extensions. In both, the constructive line shapes the surface twice: before production and in operation. The surface demarcates space, spatial envelope, enclosing garment, field of action. In which way can an operative system of the surface with stable/ unstable conditioning generate a phenomenological or evolutionary change in the reconstruction of body and context? How do time, space, movement, surface, individual and data interact in this framework? What is the impact of surface strategies and constructive line on that system? (shrink)

According to perdurantism, objects persist by being spread out over time, just as composite three-dimensional objects are spread out over space. Just as a composite three-dimensional object is spread out over space by having spatial parts, objects persist, according to perdurantism, by having temporal parts. Perdurantism can be stated more precisely by saying what exactly a temporal part is. In the sequel, Theodore Sider's definition of "instantaneous temporal part" shall be assumed: x is an instantaneous temporal part of (...) y at instant t =df. x exists at, but only at, t; x is part of y at t; and x overlaps at t everything that is part of y at t. Much more could be and has been said about how perdurantism should be formulated. Though interesting in their own right, nothing of importance here turns on these matters of formulation. (shrink)

Sensory qualities are objective properties; indeed, on the evidence, they are physical properties. However, what makes a physical property the sensory quality it is is its relationship to sensory experiences of perceivers. For instance, the redness of a surface is a physical property of the surface; what makes that physical property surface red is the fact that it disposes surfaces to look red to appropriate visual perceivers in appropriate viewing circumstances. What it is like for something to look red—that is, (...) the actual phenomenal character of visual experiences as of something red—is also a physical property; on the evidence, it is a physical property of the brain. (shrink)

How do questions concerning consciousness and phenomenal experience relate to, or interface with, questions concerning plans, knowledge and intentions? At least in the case of visual experience the relation, we shall argue, is tight. Visual perceptual experience, we shall argue, is fixed by an agent’s direct unmediated knowledge concerning her poise (or apparent poise) over a currently enabled action space. An action space, in this specific sense, is to be understood not as a fine-grained matrix of possibilities (...) for bodily movement, but as a matrix of possibilities for pursuing and accomplishing one’s intentional actions, goals and projects. If this is correct, the links between planning, intention and perceptual experience are tight, while (contrary to some recent accounts invoking the notion of ‘sensorimotor expectations’) the links between embodied activity and perceptual experience, though real, are indirect. What matters is not bodily activity itself, but our practical knowledge (which need not be verbalized or in any way explicit) of our own possibilities for action. Such knowledge, selected, shaped and filtered by the grid of plans, goals, and intentions, plays, we argue, a constitutive role in explaining the content and character of visual perceptual experience. (shrink)

Perceptions of Medieval Manuscripts takes as its starting point an understanding that a medieval book is a whole object at every point of its long history. As such, medieval books can be studied most profitably in a holistic manner as objects-in-the-world. This means readers might profitably account for all aspects of the manuscript in their observations, from the main texts that dominate the codex to the marginal notes, glosses, names, and interventions made through time. This holistic approach allows us to (...) tell the story of the book's life from the moment of its production to its use, collection, breaking-up, and digitization--all aspects of what can be termed 'dynamic architextuality'. The ten chapters include detailed readings of texts that explain the processes of manuscript manufacture and writing, taking in invisible components of the book that show the joy and delight clearly felt by producers and consumers. Chapters investigate the filling of manuscripts' blank spaces, presenting some texts never examined before, and assessing how books were conceived and understood to function. Manuscripts' heft and solidness can be seen, too, in the depictions of miniature books in medieval illustrations. Early manuscripts thus become archives and witnesses to individual and collective memories, best read as 'relics of existence', as Maurice Merleau-Ponty describes things. As such, it is urgent that practices fragmenting the manuscript through book-breaking or digital display are understood in the context of the book's wholeness. Readers of this study will find chapters on multiple aspects of medieval bookness in the distant past, the present, and in the assurance of the future continuity of this most fascinating of cultural artefacts. (shrink)