Abstract
Epileptic seizures are brief, transient events characterized by rapidly changing dynamics. Partial seizures, the most common seizure type, and one often refractory to medications, originate from focal brain regions and have variable patterns of propagation. In the presurgical evaluations of some patients, intracranial recording arrays are needed to better define the seizure focus. Digital processing, high frequency sampling rates, and more extensive or customized electrode arrays can provide a more complete assessment of patterns of seizure onset and propagation. These advanced analyses can supplement visual analyses of ictal recordings and provide new insights. Gabor atom density (a composite measure of signal complexity) and short-time direct transfer function are two examples of new methods that can provide new clues about seizure onset and propagation.
Original language | English (US) |
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Title of host publication | Encyclopedia of Basic Epilepsy Research |
Publisher | Elsevier Inc. |
Pages | 1613-1620 |
Number of pages | 8 |
ISBN (Print) | 9780123739612 |
DOIs | |
State | Published - Jan 1 2009 |
Keywords
- Activity flow
- Complexity
- EEG
- Gabor atom density
- Matching pursuit
- Multichannel analysis
- Propagation
- Seizure onset
- Time-frequency decomposition
ASJC Scopus subject areas
- General Medicine
- General Neuroscience