| Suppression of early evoked gamma band response in male alcoholics during a visual oddball task. | |
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MedLine Citation:
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PMID: 16019097 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We investigated the early evoked gamma frequency band activity in alcoholics (n=122) and normal controls (n=72) during a visual oddball task. A time-frequency representation method was applied to EEG data in order to obtain phase-locked gamma band activity (29-45 Hz) and was analyzed within a 0-150 ms time window range. Significant reduction of the gamma band response in the frontal region during target stimulus processing was observed in alcoholic compared to control subjects. In contrast, significantly higher gamma band response for the non-target stimulus was observed in alcoholics compared to controls. It is suggested that the reduction in early evoked frontal gamma band response to targets may be associated with frontal lobe dysfunction commonly observed in alcoholics. This perhaps can be characterized by a deficient top-down processing mechanism. |
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Authors:
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Ajayan Padmanabhapillai; Bernice Porjesz; Mohini Ranganathan; Kevin A Jones; David B Chorlian; Yongqiang Tang; Chella Kamarajan; Madhavi Rangaswamy; Arthur Stimus; Henri Begleiter |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, N.I.H., Extramural Date: 2005-07-12 |
Journal Detail:
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Title: International journal of psychophysiology : official journal of the International Organization of Psychophysiology Volume: 60 ISSN: 0167-8760 ISO Abbreviation: Int J Psychophysiol Publication Date: 2006 Apr |
Date Detail:
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Created Date: 2006-04-17 Completed Date: 2006-09-19 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 8406214 Medline TA: Int J Psychophysiol Country: Netherlands |
Other Details:
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Languages: eng Pagination: 15-26 Citation Subset: IM |
Affiliation:
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Department of Psychiatry, Neurodynamics Laboratory, SUNY Health Science Center, Brooklyn, NY, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Alcoholism / physiopathology* Analysis of Variance Brain Mapping Case-Control Studies Electroencephalography / methods Evoked Potentials, Visual / physiology* Humans Male Neural Inhibition / physiology* Pattern Recognition, Visual / physiology* Photic Stimulation / methods Reaction Time / physiology Time Factors |
| Grant Support | |
ID/Acronym/Agency:
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5 R01 AA02686/AA/NIAAA NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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