PMID: 9548224Apr 21, 1998Paper

Interictal quantitative EEG in epilepsy

Seizure : the Journal of the British Epilepsy Association
M E DrakeS A Newell

Abstract

The interictal EEG is often normal in epilepsy patients, particularly with partial seizures of extratemporal origin. Quantitative techniques of EEG analysis may increase the yield of diagnostic abnormality in such patients. Thirty patients with partial seizures of frontal or temporal origin had EEG recorded from left frontal (F7-C3), right frontal (F8-C4), left posterior (T5-O1), and right posterior (T6-O2) derivations. Four-second epochs were used to compute power in the delta (0.25-4.0 Hz), theta (4.25-8.0 Hz), alpha (8.25-13 Hz), and beta (13.25-30 Hz) bands. The ratio of high (8.25-30 Hz) to low (0.25-8 Hz) power on the left and the right was measured, as was the ratio between the left and the right hemisphere total power. The mean frequency deviation in the alpha band between the left and the right hemispheres was also measured, and spectral mobility was determined in the right and the left frontal regions. These values were also calculated in normal subjects and tension headache patients with normal EEGs. Seizure patients with abnormal interictal EEGs had decreased ratios of high to low power, greater asymmetry of total power and alpha frequency, and reduced spectral mobility on the side of their EEG foci. Epileptics with...Continue Reading

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Citations

Mar 17, 2004·Neurotoxicology and Teratology·Andrew C ScalletZbigniew K Binienda
Feb 1, 2003·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Y ShenP F Meier
Aug 31, 2001·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·K K JergerS J Schiff
Feb 26, 2010·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·B ClemensK Hollódy
Apr 25, 2007·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·H AurlienN E Gilhus
Oct 13, 2004·Acta Neurologica Scandinavica·Gyula Panczel, Bernd Pohlmann-Eden
Apr 12, 2003·Bipolar Disorders·Hagit CohenYuly Bersudsky
May 22, 2007·Acta Neurologica Scandinavica·H L El-SayedA M El-Ganzory
Jul 16, 2010·Alcoholism, Clinical and Experimental Research·Trond SandGunnar Bovim
Mar 29, 2005·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·C M TemuçinE Bilir
Apr 20, 2006·Journal of Theoretical Biology·Mauro Ursino, Giuseppe-Emiliano La Cara
Mar 1, 2006·Epilepsy Research·Ralph G AndrzejakKlaus Lehnertz
Aug 10, 2019·Journal of Clinical Medicine·Micheal StreinGretchen M Brophy

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