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Strength Symmetry Index: A measure of seizure adequacy in ECT

Gangadhar, BN and Janakiramaiah, N and Dutt, DN and Motreja, S (1997) Strength Symmetry Index: A measure of seizure adequacy in ECT. In: Convulsive Therapy, 13 (1). 18-24 .

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Abstract

Seizure electroencephalography (EEG) was recorded from two channels-right (Rt) and left (Lt)-during bilateral electroconvulsive therapy (ECT) (n = 12) and unilateral ECT (n = 12). The EEG was also acquired into a microcomputer and was analyzed without knowledge of the clinical details. EEG recordings of both ECT procedures yielded seizures of comparable duration. The Strength Symmetry Index (SSI) was computed from the early- and midseizure phases using the fractal dimension of the EEG. The seizures of unilateral ECT were characterized by significantly smaller SSI in both phases. More unilateral than bilateral ECT seizures had a smaller than median SSI in both phases. The seizures also differed on other measures as reported in the literature. The findings indicate that SSI may be a potential measure of seizure adequacy that remains to be validated in future research.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Lippincott-Raven Publ.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 24 Jun 2011 06:26
Last Modified: 24 Jun 2011 06:26
URI: http://eprints.iisc.ernet.in/id/eprint/38486

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