Neurophysiological Evidence for Categorical Perception of Color

Autor/inn/en	Holmes, Amanda; Franklin, Anna; Clifford, Alexandra; Davies, Ian
Titel	Neurophysiological Evidence for Categorical Perception of Color
Quelle	In: Brain and Cognition, 69 (2009) 2, S.426-434 (9 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0278-2626
DOI	10.1016/j.bandc.2008.09.003
Schlagwörter	Stimuli; Cognitive Processes; Color; Perception + Suchen Sie Ihr Suchwort? Anreizsystem; Cognitive process; Kognitiver Prozess; Colour; Farbbezeichnung; Farbe; Wahrnehmung
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. (Contains 2 tables and 3 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10