Bob Kentridge - "Colour Constancy, Sensation and Perception"
Duration: 25 mins 24 secs
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About this item
| Description: | This is a talk from Bob Kentridge (Durham University). It formed part of Session One of The Human Mind Conference, "Brain & World: Perception & Consciousness" |
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| Created: | 2017-10-24 14:40 |
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| Collection: | The Human Mind Conference |
| Publisher: | University of Cambridge |
| Copyright: | Bob Kentridge |
| Language: | eng (English) |
| Distribution: |
World
(downloadable)
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| Explicit content: | No |
| Aspect Ratio: | 16:9 |
| Screencast: | No |
| Bumper: | UCS Default |
| Trailer: | UCS Default |
| Abstract: | The simplest distinction between ‘sensation’ and ‘perception’ is that perception involves becoming acquainted with the properties of things in the world whereas sensation involves having the experiences that those things elicit. The classical view of the relationship between sensation and perception, held by Aristotle and championed more recently by Herman von Helmholtz, is that we infer properties of things in the world from the sensations they elicit. In other words, perception is derived from sensation. I will describe an experiment in which we show that the visual system estimates a property of an external object even when that object is rendered invisible using a masking technique. This clearly violates the notion that percepts must be derived from sensations and suggests that unconscious perception can occur. I conclude with some discussion of whether more complex definitions of perception (e.g. the recent work of Tyler Burge) render the possibility of unconscious perception impossible by definition (and so are self-sealing) or whether further work is needed to truly test the existence of unconscious perception empirically. |
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