| Defective alpha reactivity with mental concentration. | |
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MedLine Citation:
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PMID: 9821069 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We have studied 120 patients with EEGs that show defective reactivity of alpha activity in which one side fails to attenuate during the performance of mental arithmetic. The side of defective reactivity was the right side in 74 patients and the left in 46. A similar asymmetric reactivity of alpha activity to eye opening (Bancaud phenomenon) was seen in 32 patients. Also, 113 patients had lateralized EEG abnormalities on the side of defective reactivity and on the side in which cerebral lesions or disorders of cerebral function were present. The unilateral failure of alpha attenuation with mental concentration represents a subtle lateralized electrographic manifestation of cerebral dysfunction on the side of defective reactivity. |
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Authors:
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B F Westmoreland; D W Klass |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society Volume: 15 ISSN: 0736-0258 ISO Abbreviation: J Clin Neurophysiol Publication Date: 1998 Sep |
Date Detail:
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Created Date: 1999-02-12 Completed Date: 1999-02-12 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8506708 Medline TA: J Clin Neurophysiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 424-8 Citation Subset: IM |
Affiliation:
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Division of Clinical Neurophysiology, Mayo Clinic, Rochester, Minnesota 55905, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Alpha Rhythm* Brain Diseases / physiopathology* Case-Control Studies Dominance, Cerebral / physiology* Electroencephalography Female Humans Male Mathematics Middle Aged Thinking / physiology* |
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