Electrophysiological correlates of visual consciousness and selective attention.

Abstract:

:It is not clear whether attention is necessary or not for consciousness. We studied the relationship between attention and consciousness by tracking their electrophysiological correlates. The participants attended to visual targets, ignored nontargets in the prespecified visual field and ignored all stimuli in the opposite field. Visual consciousness was varied by masking. Our results showed that the earliest electrophysiological correlate of consciousness emerged independent of the manipulations of spatial and nonspatial attention. Conversely, the electrophysiological correlate of attention, selection negativity, was elicited regardless of the presence or absence of consciousness. Only the correlates of later, higher-level conscious processes strongly depended on attention. Thus, the electrophysiological brain responses reflecting visual consciousness and attention are initially independent of each other.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Koivisto M,Revonsuo A

doi

10.1097/WNR.0b013e3280c143c8

subject

Has Abstract

pub_date

2007-05-28 00:00:00

pages

753-6

issue

8

eissn

0959-4965

issn

1473-558X

pii

00001756-200705280-00006

journal_volume

18

pub_type

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