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Reversal negativity and bistable stimuli: Attention, awareness, or something else?
Högskolan i Skövde, Institutionen för kommunikation och information.ORCID-id: 0000-0002-2771-1588
2010 (engelsk)Inngår i: Brain and Cognition, ISSN 0278-2626, E-ISSN 1090-2147, Vol. 74, nr 1, s. 24-34Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Ambiguous (or bistable) figures are visual stimuli that have two mutually exclusive perceptual interpretations that spontaneously alternate with each other. Perceptual reversals, as compared with non-reversals, typically elicit a negative difference called reversal negativity (RN), peaking around 250 ms from stimulus onset. The cognitive interpretation of RN remains unclear: it may reflect either bottom-up processes, attentional processes that select between the alternative views of the stimulus, or it may reflect the change in the contents of subjective awareness. In the present study, event-related potentials in response to endogenous unilateral and bilateral reversals of two Necker lattices were compared with exogenously induced reversals of unambiguous lattices. The RN neither resembled the attention-related N2pc response, nor did it correlate with the content of subjective visual awareness. Thus, we conclude that RN is a non-attentional ERP correlate of the changes in the perceptual configuration of the presented object.

sted, utgiver, år, opplag, sider
Elsevier, 2010. Vol. 74, nr 1, s. 24-34
Emneord [en]
Reversal negativity, Visual perception, ambiguous figures, Necker cube, Event-related potentials, N2pc
HSV kategori
Forskningsprogram
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:his:diva-4693DOI: 10.1016/j.bandc.2010.06.002ISI: 000280944000004PubMedID: 20598419Scopus ID: 2-s2.0-77955279419OAI: oai:DiVA.org:his-4693DiVA, id: diva2:393881
Tilgjengelig fra: 2011-02-01 Laget: 2011-02-01 Sist oppdatert: 2017-12-11bibliografisk kontrollert

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