PMID: 16634457Apr 26, 2006Paper

Spectral EEG-characteristics of subcortical ischemic brain lesion--a case study

Ideggyógyászati szemle
Márk MolnárZoltán Nagy

Abstract

Although the EEG-changes caused by ischemic stroke are well known, data of the literature are rather ambiguous. The EEG-findings recorded in a patient with a unilateral subcortical ischemic lesion are evaluated with special emphasis related to the effect of the dynamics caused by eye opening. Data recorded from a patient (54 years old male with a completed stroke involving the frontal and parietal subcortical region in the left side) were compared to those of a control group (12 healthy age matched subjects). Absolute and relative frequency spectra, theta/beta quotients, the interaction index characterizing the effect of eyes opening and the symmetry index were calculated from the EEG recorded in eyes closed and eyes open conditions. Data of the patient were compared to those recorded in the control group on the basis of 95% confidence intervals. Irrespective of the recording conditions the predominance of slow activity and the increase of theta/beta quotients were found in the absolute frequency spectra. The increase of beta and beta2 frequency bands following eye opening on the side of the lesion were found to be less obvious than that seen on the intact side and that observed in the control group. With respect to the interac...Continue Reading

Related Concepts

Related Feeds

Brain Ischemia

Brain ischemia is a condition in which there is insufficient blood flow to the brain to meet metabolic demand. Discover the latest research on brain ischemia here.

Related Papers

EEG-EMG Zeitschrift für Elektroenzephalographie, Elektromyographie und verwandte Gebiete
W GirkeC Xenakis
EEG-EMG Zeitschrift für Elektroenzephalographie, Elektromyographie und verwandte Gebiete
H BräuW Schörner
EEG-EMG Zeitschrift für Elektroenzephalographie, Elektromyographie und verwandte Gebiete
R KorinthenbergJ Ritter
© 2022 Meta ULC. All rights reserved