Neural correlates of acquired color category effects
Author
Clifford, A.
Franklin, A.
Holmes, A.
Drivonikou V.G.
Özgen, E.
Davies I.R.L.
Date
2012Source Title
Brain and Cognition
Print ISSN
0278-2626
Volume
80
Issue
1
Pages
126 - 143
Language
English
Type
ArticleItem Usage Stats
154
views
views
168
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downloads
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. © 2012.
Keywords
Category trainingColor
Color categories
Event-Related Potentials
adult
article
brain function
cognition
color discrimination
controlled study
event related potential
female
functional assessment
human
human experiment
male
mental task
normal human
perceptive discrimination
priority journal
task performance
visual discrimination
visual nervous system
visual stimulation
Adult
Cerebral Cortex
Color Perception
Concept Formation
Discrimination (Psychology)
Electroencephalography
Evoked Potentials
Female
Humans
Male
Photic Stimulation
Permalink
http://hdl.handle.net/11693/21312Published Version (Please cite this version)
http://dx.doi.org/10.1016/j.bandc.2012.04.011Collections
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