| Interictal high-frequency oscillations indicate seizure onset zone in patients with focal cortical dysplasia. | |
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MedLine Citation:
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PMID: 20362416 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Interictal high-frequency oscillations (HFO) were recently identified in recordings from depth macroelectrodes in epileptic patients. StereoEEG (SEEG) recordings were analyzed in four patients with medically intractable partial seizures due to focal cortical dysplasia type IIA. Characteristics of HFO within seizure onset zone (SOZ), irritative zone, and remote brain areas were investigated. Whilst the rate of occurrence for ripples (80-200 Hz) was significantly higher in recordings from within than outside the SOZ, the rate of fast ripples (200-450 Hz) was less reliable index of SOZ. Interestingly, the mean powers across subjects were significantly higher within than outside the SOZ in both ripple and fast ripple frequency ranges. Our study demonstrates a capacity of interictal HFO to detect the SOZ in focal cortical dysplasias. |
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Authors:
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Milan Brázdil; Josef Halámek; Pavel Jurák; Pavel Daniel; Robert Kuba; Jan Chrastina; Zdenek Novák; Ivan Rektor |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-04-02 |
Journal Detail:
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Title: Epilepsy research Volume: 90 ISSN: 1872-6844 ISO Abbreviation: Epilepsy Res. Publication Date: 2010 Jun |
Date Detail:
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Created Date: 2010-06-23 Completed Date: 2010-09-27 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8703089 Medline TA: Epilepsy Res Country: Netherlands |
Other Details:
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Languages: eng Pagination: 28-32 Citation Subset: IM |
Copyright Information:
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Copyright (c) 2010 Elsevier B.V. All rights reserved. |
Affiliation:
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Brno Epilepsy Center, Departments of Neurology and Neurosurgery, St. Anne's University Hospital and Medical Faculty of Masaryk University, Brno, Czech Republic. mbrazd@med.muni.cz |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Analysis of Variance Brain / physiopathology Brain Mapping* Electrodes Electroencephalography / methods Female Humans Magnetic Resonance Imaging / methods Male Malformations of Cortical Development / complications*, pathology* Middle Aged Seizures / etiology* Signal Processing, Computer-Assisted Spectrum Analysis |
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