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| Research article summary (published 14 Apr 2002): |
Attentional switching-related human EEG alpha oscillations.
Full Abstract
Alpha oscillations during cognitive performance have mostly been studied in memory and/or basic attention tasks. This study investigates task-related alpha power desynchronization during an attentional switching task requiring higher executive attentional control. Low 8-10 Hz and high 10-12 Hz alpha power responses are studied in good versus poor performers based upon normative data. Accurate, fast and stable performers showed significant task-related desynchronization in the 8-10 Hz range during attentional switching, whereas inaccurate performers hypersynchronized in the 10-12 Hz range, and slow and unstable performers did not demonstrate significant alpha reactivity. These preliminary findings indicate, in agreement with previous research, functional differences in these narrow frequency bands. The 8-10 Hz power decrease is likely to be related to phasic arousal or alertness, whereas the 10-12 Hz power increase appears to be associated with inaccurate attentional switching.
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Author information
Author/s: Verstraeten, Edwin (E); Cluydts, Raymond (R);
Affiliation: Department of Cognitive and Physiological Psychology, Laboratory for CNS Research: Cognition, Neuropsychology, & Sleep, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium.
Journal and publication information
Publication Type: Comparative Study; Journal Article
Journal: Neuroreport (Neuroreport), published in England. (Language: eng)
Reference: 2002-Apr; vol 13 (issue 5) : pp 681-4
Dates: Created 2002/04/25; Completed 2002/06/24; Revised 2006/11/15;
PMID: 11973470, 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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