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| Research article summary (published 29 Apr 2002): |
Induced gamma activity is associated with conscious awareness of pattern masked nouns.
Full Abstract
The aim of this study was to explore the relationship between electroencephalographic (EEG) activity in the gamma frequency range and conscious awareness of a visual stimulus. EEG was recorded from subjects while they were shown backward-masked words only some of which they were able to discriminate correctly. The results showed that activity in the gamma frequency range increased with reported awareness of a word independently of whether it was correctly discriminated or not. It is concluded that gamma power is associated with awareness-dependent visual processing but not with processing that occurs in the absence of awareness.
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Author information
Author/s: Summerfield, Christopher (C); Jack, Anthony Ian (AI); Burgess, Adrian Philip (AP);
Affiliation: Department of Psychiatry and Psychobiology, University of Barcelona, Hospital Clinic, c/Casanova 143, 08036, Barcelona, Spain. summerfd(-atsign-)paradox.psych.columbia.edu
Journal and publication information
Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't
Journal: International journal of psychophysiology : official journal of the International Organization of Psychophysiology (Int J Psychophysiol), published in Netherlands. (Language: eng)
Reference: 2002-May; vol 44 (issue 2) : pp 93-100
Dates: Created 2002/03/22; Completed 2003/03/24; Revised 2006/11/15;
PMID: 11909644, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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