Neural Correlates of Acquired Color Category Effects

Autor/inn/en	Clifford, Alexandra; Franklin, Anna; Holmes, Amanda; Drivonikou, Vicky G.; Ozgen, Emre; Davies, Ian R. L.
Titel	Neural Correlates of Acquired Color Category Effects
Quelle	In: Brain and Cognition, 80 (2012) 1, S.126-143 (18 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0278-2626
DOI	10.1016/j.bandc.2012.04.011
Schlagwörter	Control Groups; Stimuli; Classification; Correlation; Color; Visual Discrimination; Visual Stimuli; Diagnostic Tests; Task Analysis; Visual Perception; Cognitive Processes + Suchen Sie Ihr Suchwort? Anreizsystem; Classification system; Klassifikation; Klassifikationssystem; Korrelation; Colour; Farbbezeichnung; Farbe; Diagnostic test; Diagnostischer Test; Aufgabenanalyse; Visuelle Wahrnehmung; Cognitive process; Kognitiver Prozess
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. (Contains 13 figures and 1 table.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10