Journal
BIOSYSTEMS
Volume 67, Issue 1-3, Pages 157-166Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0303-2647(02)00102-8
Keywords
attention; synchrony; neural coding
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Attentional selection implies preferential treatment of some sensory stimuli over others. This requires differential representation of attended and unattended stimuli. Most previous research has focused on pure rate codes for this representation but recent evidence indicates that a mixed code, involving both mean firing rate and temporal codes, may be employed. Of particular interest is a distinction of attended from unattended stimuli based on synchrony within neural populations. I review electrophysiological evidence at macroscopic, mesoscopic and microscopic spatial scales showing that the degree of synchronous activity varies with the attentional state of the perceiving organism. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved.
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