| Localization of temporal lobe seizures with quantitative EEG. | |
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MedLine Citation:
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PMID: 7681383 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In this study, we describe a quantitative EEG method for localization of seizure onset in 29 patients with temporal lobe epilepsy. We used right-left differences in relative power and a logistic regression to predict the side of seizure onset. The optimum bipolar channels were T4-T6/T3-T5 and the optimum frequency band was 4-10.5 Hz. Using a threshold probability of 0.75 for classification, the best quantitative EEG method classified 23 patients (79%) correctly, 2 patients (7%) incorrectly, and 4 patients (14%) as undetermined localization. In comparison, 3 electroencephalographers visually interpreted these same EEGs and classified 20-25 patients (69-86%) correctly, 1 patient (3%) incorrectly and 3-8 patients (10-28%) as undetermined localization. In the 8 patients classified as undetermined localization by at least one interpreter, the quantitative EEG method classified 5 patients correctly, 1 patient incorrectly and 2 patients as undetermined localization. These results suggest that quantitative EEG might improve the reliability of ictal EEG localization and potentially reduce the need for invasive intracranial EEG monitoring. |
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Authors:
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A M Murro; Y D Park; D W King; B B Gallagher; J R Smith; K J Meador; W Littelton |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Electroencephalography and clinical neurophysiology Volume: 86 ISSN: 0013-4694 ISO Abbreviation: Electroencephalogr Clin Neurophysiol Publication Date: 1993 Feb |
Date Detail:
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Created Date: 1993-04-27 Completed Date: 1993-04-27 Revised Date: 2008-09-09 |
Medline Journal Info:
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Nlm Unique ID: 0375035 Medline TA: Electroencephalogr Clin Neurophysiol Country: IRELAND |
Other Details:
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Languages: eng Pagination: 88-93 Citation Subset: IM |
Affiliation:
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Department of Neurology, VA Medical Center, Augusta, GA 30912. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Electroencephalography / methods* Epilepsy, Temporal Lobe / physiopathology* Female Fourier Analysis Humans Male Middle Aged Signal Processing, Computer-Assisted |
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