A1 Refereed original research article in a scientific journal
Reversal negativity and bistable stimuli: Attention, awareness, or something else?
Authors: Intaite M, Koivisto M, Ruksenas O, Revonsuo A
Publisher: ACADEMIC PRESS INC ELSEVIER SCIENCE
Publication year: 2010
Journal: Brain and Cognition
Journal name in source: BRAIN AND COGNITION
Journal acronym: BRAIN COGNITION
Number in series: 1
Volume: 74
Issue: 1
First page : 24
Last page: 34
Number of pages: 11
ISSN: 0278-2626
DOI: https://doi.org/10.1016/j.bandc.2010.06.002
Abstract
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. (C) 2010 Elsevier Inc. All rights reserved.
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. (C) 2010 Elsevier Inc. All rights reserved.
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