Do We Visually Experience Objects’ Occluded Parts?

2021 ◽  
pp. 1-17
Author(s):  
Matt E. M. Bower
Keyword(s):  
Phenomenal Character ◽  
Amodal Completion ◽  
Opaque Object

Abstract A number of philosophers have held that we visually experience objects’ occluded parts, such as the out-of-view exterior of a voluminous, opaque object. That idea is supposed to be what best explains the fact that we see objects as whole or complete despite having only a part of them in view at any given moment. Yet, the claim doesn’t express a phenomenological datum and the reasons for thinking we do experience objects’ occluded parts, I argue, aren’t compelling. Additionally, I anticipate and reply to attempts to salvage the idea by appeal to perceptual expectation and amodal completion. Lastly, I address potential concerns that the only way to capture the phenomenal character of perceiving voluminous objects is to say experience outstrips what’s in view, providing a description of such experience without any implication of that idea.

Dual Aspect Theory

2018 ◽  
Author(s):  
J. Christopher Maloney
Keyword(s):  
Phenomenal Character ◽  
Order Theory ◽  
Higher Order ◽  
Normal Variation ◽  
Perceptual Representations ◽  
Order Representation ◽  
Management Conflicts ◽  
Higher Order Theory

Carruthers proposes a subtle dispositionalist rendition of higher order theory regarding phenomenal character. The theory would distinguish unconscious movement management from conscious attitude management as perceptual processes. Each process takes perceptual representations as inputs. A representation subject to attitude management is apt to induce a higher order representation of itself that secures a self-referential aspect of its content supposedly determinative of phenomenal character. Unfortunately, the account requires a problematic cognitive ambiguity while failing to explain why attitude, but not movement, management, determines character. Moreover, normal variation in attitudinal management conflicts with the constancy typical of phenomenal character. And although an agent denied perceptual access to a scene about which she is otherwise well informed would suffer no phenomenal character, dispositionalist theory entails otherwise. Such problems, together with the results of the previous chapters, suggest that, whether cloaked under intentionalism or higher order theory, representationalism mistakes content for character.

Higher Order Theory

2018 ◽  
Author(s):  
J. Christopher Maloney
Keyword(s):  
Phenomenal Character ◽  
Order Theory ◽  
Higher Order ◽  
Cognitive State ◽  
Unconscious Perception ◽  
Higher Order Theory ◽  
Order State

Rosenthal's rendition of representationalism denies intentionalism. His higher order theory instead asserts that a perceptual state's phenomenal character is set by that state's being related to, because represented by, another, but higher order, cognitive state. The theory arises from the doubtful supposition of unconscious perception and mistakenly construes intrinsic phenomenal character extrinsically, as one state's serving as the content of another. Yet it remains mysterious how and why a higher order state might be so potent as to determine phenomenal character at all. Better to resist higher order theory’s embrace of dubious unconscious perceptual states and account for states so-called simply in terms of humdrum mnemonic malfeasance. Moreover, since the suspect theory allows higher order misrepresentation, it implies sufferance of impossible phenomenal character. Equally problematic, representationalism pitched at the higher order entails the existence of bogus phenomenal character when upstairs states represent downstairs nonperceptual states.

Intentionalism, Cognition, and Representation

2018 ◽  
Author(s):  
J. Christopher Maloney
Keyword(s):  
Cognitive Science ◽  
Mental Representation ◽  
Phenomenal Character ◽  
Conscious Perception ◽  
Perceptual Representation ◽  
Perceptual State ◽  
Content Of Experience

This chapter continues consideration of reductive intentionalism without embracing the doctrine, framing it in the context of cognitive science. Cognition, including perception, is representation. An agent’s cognitive, perhaps perceptual, state is a relation binding the agent to a proposition by means of her mental representation. Intentionalism would explicate the phenomenal character of a perceiver's experience in terms of the content of her prevailing perceptual representation. While minimal intentionalism maintains that the phenomenal character of the perceiver's experience merely supervenes on her representation's content, maximal intentionalism would reduce character to content. For maximal intentionalism maintains that phenomenal character is simply what introspection finds. Yet, according to maximal intentionalism, introspection, when tuned to conscious perception, detects only the content of experience. Hence, the maximalist identifies phenomenal character with the content carried by perceptual representation.

Infusing Perception with Imagination

2018 ◽  
Author(s):  
Derek H. Brown
Keyword(s):  
Case Studies ◽  
Amodal Completion ◽  
Perceptual Constancy

This chapter explores the broad thesis that most if not all perceptual experiences are infused or soaked with imaginings. To begin, the author articulates a sense of imagination useful for this discussion, avoids some pitfalls, and incorporates the result into a schematic guidance principle. The thought behind the principle is that imaginative contributions to perceptual experiences are self-generated ingredients to perception that have a reasonably direct, ampliative impact on the relevant perceptual experiences. This framework is then applied to three sets of case studies: object-kind and object-sameness experiences (Strawson 1970); colour (Macpherson 2012); and amodal completion (Nanay 2010) and perceptual constancy. Although the case studies have interesting differences, they all conform to the guidance principle. Since each has the potential to independently justify the thesis that perceptual experiences are infused with imaginings, they collectively provide sound motive to provisionally endorse it.

Perceptual Attention

2018 ◽  
Author(s):  
Jonardon Ganeri
Keyword(s):  
Phenomenal Character ◽  
Conscious Experience ◽  
Perceptual Attention ◽  
Conscious Attention

Conscious attention performs two distinct roles in experience, a role of placing and a role of focusing, roles which match a distinction between selection and access endorsed in recent theories of attention. The intentionality of conscious experience consists in two sorts of attentional action, a focusing at and a placing on, the first lending to experience a perspectival categorical content and the second structuring its phenomenal character. Placing should be thought of more like opening a window for consciousness than as shining a spotlight, and focusing has to do with accessing the properties of whatever the window opens onto. A window is an aperture whose boundaries are defined by what is excluded—in this case, distractors.

Quality and Content

2018 ◽  
Author(s):  
Joseph Levine
Keyword(s):  
Phenomenal Character ◽  
The Other ◽  
Intentional Content ◽  
Phenomenal Concept ◽  
Cognitive Phenomenology ◽  
Modal Argument ◽  
Demonstrative Thought ◽  
Naturalistic Theory ◽  
Phenomenal Concept Strategy ◽  
The One

The papers presented in this volume cover topics, such as the “phenomenal concept strategy,” to defend materialism from anti-materialist intuitions, the doctrine of representationalism about phenomenal character, the modal argument against materialism, the nature of demonstrative thought, and cognitive phenomenology. On the one hand, I argue that the phenomenal concept strategy cannot work and that representationalism has certain fatal flaws, at least if it’s to be joined to a materialist metaphysics. On the other, I defend materialism from the modal argument, arguing that it relies on a questionable conflation of semantic and metaphysical issues. I also provide a naturalistic theory of demonstrative thought, criticizing certain philosophical arguments involving that notion in the process. I argue as well that the peculiarly subjective nature of secondary qualities provides a window into the nature of the relation between phenomenal character and intentional content, and conclude that relation involves a robust notion of acquaintance.

scholarly journals Contents of Unconscious Color Perception

2021 ◽  
Author(s):  
Błażej Skrzypulec
Keyword(s):  
Phenomenal Character ◽  
Color Perception ◽  
Representational Content ◽  
Human Cognition ◽  
Unconscious Perception ◽  
Theoretical Investigations ◽  
Significant Support

AbstractIn the contemporary discussions concerning unconscious perception it is not uncommon to postulate that content and phenomenal character are ‘orthogonal’, i.e., there is no type of content which is essentially conscious, but instead, every representational content can be either conscious or not. Furthermore, this is not merely treated as a thesis justified by theoretical investigations, but as supported by empirical considerations concerning the actual functioning of the human cognition. In this paper, I address unconscious color perception and argue for a negative thesis—that the main experimental paradigms used in studying unconscious color perception do not provide support for the position that conscious and unconscious color representations have the same type of content. More specifically, I claim that there is no significant support for the claim that unconscious vision categorically represents surface colors.

The “Mosaic Stage” in Amodal Completion as Characterized by Magnetoencephalography Responses

2006 ◽  
Vol 18 (8) ◽  
pp. 1394-1405 ◽  
Author(s):  
Gijs Plomp ◽  
Lichan Liu ◽  
Cees van Leeuwen ◽  
Andreas A. Ioannides
Keyword(s):  
Neural Activity ◽  
Visual Processing ◽  
Early Stage ◽  
Amodal Completion ◽  
Peak Latency ◽  
Per Se

We investigated the process of amodal completion in a same-different experiment in which test pairs were preceded by sequences of two figures. The first of these could be congruent to a global or local completion of an occluded part in the second figure, or a mosaic interpretation of it. We recorded and analyzed the magnetoencephalogram for the second figures. Compared to control conditions, in which unrelated primes were shown, occlusion and mosaic primes reduced the peak latency and amplitude of neural activity evoked by the occlusion patterns. Compared to occlusion primes, mosaic ones reduced the latency but increased the amplitude of evoked neural activity. Processes relating to a mosaic interpretation of the occlusion pattern, therefore, can dominate in an early stage of visual processing. The results did not provide evidence for the presence of a functional “mosaic stage” in completion per se, but characterize the mosaic interpretation as a qualitatively special one that can rapidly emerge in visual processing when context favors it.

scholarly journals Is Perception Stimulus-Dependent?

2021 ◽  
Author(s):  
Sergio Cermeño-Aínsa
Keyword(s):  
Amodal Completion ◽  
Visual Categorization ◽  
Australasian Journal ◽  
Dependence Criterion ◽  
The Senses ◽  
Natural Way

AbstractThe most natural way to distinguish perception from cognition is by considering perception as stimulus-dependent. Perception is tethered to the senses in a way that cognition is not. Beck Australasian Journal of Philosophy 96(2): 319-334 (2018) has recently argued in this direction. He develops this idea by accommodating two potential counterexamples to his account: hallucinations and demonstrative thoughts. In this paper, I examine this view. First, I detect two general problems with movement to accommodate these awkward cases. Subsequently, I place two very common mental phenomena under the prism of the stimulus-dependence criterion: amodal completion and visual categorization. The result is that the stimulus-dependent criterion is too restrictive, it leaves the notion of perception extremely cramped. I conclude that even the criterion of stimulus-dependence fails to mark a clearly defined border between perception and cognition.

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