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Neural correlates of acquired colour category effects.

Clifford, A, Franklin, A, Holmes, A, Drivonikou, A, Özgen, E and Davies, IRL (2012) Neural correlates of acquired colour category effects. Brain and Cognition, 80 (1). 126 - 143. ISSN 0278-2626

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Abstract

Category training can induce category effects, whereby color discrimination of stimuli spanning a newly learned category boundary is enhanced relative to equivalently spaced stimuli from within the newly learned category (e.g., categorical perception). However, the underlying mechanisms of these acquired category effects are not fully understood. In the current study, event-related potentials (ERPs) were recorded during a visual oddball task where standard and deviant colored stimuli from the same or different novel categories were presented. ERPs were recorded for a test group who were trained on these novel categories, and for an untrained control group. Category effects were only found for the test group on the trained region of color space, and only occurred during post-perceptual stages of processing. These findings provide new evidence for the involvement of cognitive mechanisms in acquired category effects and suggest that category effects of this kind can exist independent of early perceptual processes.

Item Type: Article
Additional Information: This is an electronic version of an article publhed as Clifford AM, Franklin A, Holmes A, Drivonikou A, Özgen E, Davies IRL (2012). Neural correlates of acquired colour category effects. Brain and Cognition 80(1):126-143. Available online at: http://www.sciencedirect.com/science/journal/02782626/80
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Divisions: Faculty of Arts and Human Sciences > Psychology
Depositing User: Symplectic Elements
Date Deposited: 03 Jul 2012 12:34
Last Modified: 23 Sep 2013 19:28
URI: http://epubs.surrey.ac.uk/id/eprint/533447

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