Chromatic perceptual learning

Date
2011
Advisor
Instructor
Source Title
Print ISSN
Electronic ISSN
Publisher
John Benjamins Publishing Company
Volume
Issue
Pages
433 - 443
Language
English
Type
Book Chapter
Journal Title
Journal ISSN
Volume Title
Abstract

Perceptual learning has been shown on a wide variety of achromatic visual tasks. However, very little work has explored the possibility of improvements on chromatically based tasks. Here, we used a transfer of learning paradigm to assess the specificity of improvements at discriminating the orientation of a chromatically defined edge presented in luminance noise. Chromatic thresholds were estimated for two different hues and retinal locations, before and after a ten day training period. During training observers discriminated the orientation of a chromatic edge at just one location and hue. Whilst performance improved following training, these improvements failed to transfer across either retinal location or hue. Our findings suggest that improvements in chromatically-mediated discrimination may involve plasticity at early, retinotopically mapped, stages of visual analysis. Further, they suggest that categorical perception of colour might in part arise from chromatic perceptual learning at colour category boundaries.

Course
Other identifiers
Book Title
New Directions in Colour Studies
Keywords
Chromatic, Language and culture
Citation
Published Version (Please cite this version)