Indian Journal of PsychiatryIndian Journal of Psychiatry
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ARTICLE
Year : 1992  |  Volume : 34  |  Issue : 1  |  Page : 8-11

Seizure Duration Estimates from Single Channel EEG Record : A Methodological Report


1 Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore-560 029, India
2 Department Biostatistics, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore-560 029, India

Correspondence Address:
B N Gangadhar
Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore-560 029
India
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Source of Support: None, Conflict of Interest: None


PMID: 21776088

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Seizure duration was estimated using a single channel EEG recording during ECT. Seizure endpoint was defined as the point of last spike. Three psychiatrists independently rated forty seven EEG records. Seizure endpoint could be reliably identified. The reliability coefficient between three raters was 0. 92, indicating high agreement among raters. Modal difference between any pair of raters as well as all three was 0.5 second or less. Operational definition of seizure endpoint improves the reliability of identifying the same and hence estimation of seizure duration from even a single channel EEG trace.



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