The Interaction between Surface Color and Color Knowledge: Behavioral and Electrophysiological Evidence

Autor/inn/en	Bramao, Ines; Faisca, Luis; Forkstam, Christian; Inacio, Filomena; Araujo, Susana; Petersson, Karl Magnus; Reis, Alexandra
Titel	The Interaction between Surface Color and Color Knowledge: Behavioral and Electrophysiological Evidence
Quelle	In: Brain and Cognition, 78 (2012) 1, S.28-37 (10 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0278-2626
DOI	10.1016/j.bandc.2011.10.004
Schlagwörter	Visual Stimuli; Semantics; Identification; Infants; Long Term Memory; Diagnostic Tests; Color; Knowledge Level; Cues; Comparative Analysis + Suchen Sie Ihr Suchwort? Semantik; Identifikation; Identifizierung; Infant; Toddler; Toddlers; Kleinkind; Langzeitgedächtnis; Diagnostic test; Diagnostischer Test; Colour; Farbbezeichnung; Farbe; Wissensbasis; Stichwort
Abstract	In this study, we used event-related potentials (ERPs) to evaluate the contribution of surface color and color knowledge information in object identification. We constructed two color-object verification tasks--a surface and a knowledge verification task--using high color diagnostic objects; both typical and atypical color versions of the same object were presented. Continuous electroencephalogram was recorded from 26 subjects. A cluster randomization procedure was used to explore the differences between typical and atypical color objects in each task. In the color knowledge task, we found two significant clusters that were consistent with the N350 and late positive complex (LPC) effects. Atypical color objects elicited more negative ERPs compared to typical color objects. The color effect found in the N350 time window suggests that surface color is an important cue that facilitates the selection of a stored object representation from long-term memory. Moreover, the observed LPC effect suggests that surface color activates associated semantic knowledge about the object, including color knowledge representations. We did not find any significant differences between typical and atypical color objects in the surface color verification task, which indicates that there is little contribution of color knowledge to resolve the surface color verification. Our main results suggest that surface color is an important visual cue that triggers color knowledge, thereby facilitating object identification. (Contains 7 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10