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Neurophysiological evidence for categorical perception of color

Holmes, A, Franklin, A, Clifford, A and Davies, I (2009) Neurophysiological evidence for categorical perception of color Brain and Cognition, 69 (2). 426 - 434. ISSN 0278-2626

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Abstract

The aim of this investigation was to examine the time course and the relative contributions of perceptual and post-perceptual processes to categorical perception (CP) of color. A visual oddball task was used with standard and deviant stimuli from same (within-category) or different (between-category) categories, with chromatic separations for within- and between-category stimuli equated in Munsell Hue. CP was found on a behavioral version of the task, with faster RTs and greater accuracy for between-compared to within-category stimuli. On a neurophysiological version of the task, event-related potentials (ERPs) showed earlier latencies for P1 and N1 components at posterior locations to between- relative to within-category deviants, providing novel evidence for early perceptual processes on color CP. Enhanced P2 and P3 waves were also found for between- compared to within-category stimuli, indicating a role for later post-perceptual processes. (C) 2008 Elsevier Inc. All rights reserved.

Item Type: Article
Additional Information: This is an electronic version of a paper published as: Holmes A, Franklin A, Clifford A, Davies I (2009). Neurophysiological evidence for categorical perception of color. Brain and Cognition 69(2):426-434. Available online at: http://www.sciencedirect.com/science/journal/02782626/69/2
Uncontrolled Keywords: Categorical perception Color Event-related potentials Visual oddball VISUAL SELECTIVE ATTENTION FACIAL EXPRESSIONS WHORF HYPOTHESIS MUNSELL COLORS BRAIN ACTIVITY REACTION-TIMES DISCRIMINATION P300 ERP CATEGORIZATION
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Divisions: Faculty of Arts and Human Sciences > Psychology
Depositing User: Symplectic Elements
Date Deposited: 08 May 2012 15:51
Last Modified: 23 Sep 2013 19:14
URI: http://epubs.surrey.ac.uk/id/eprint/231719

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