Computerized EEG as a Predictor of Drug Response in Treatment Resistant Schizophrenics

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Abstract
Thirteen chronic schizophrenics were identified who failed to improve with physician's choice medication and 1 year of systematic treatment with a long acting phenothiazine. These patients were considered to be treatment resistant. Computer analyzed electroencephalogram (CEEG) of these treatment resistant schizophrenics was characterized by a large amount of alpha activity and less fast activity, in comparison with previous results from therapy responsive schizophrenics. The therapy resistant subjects did not display the typical neuroleptic CEEG profile following test dosages of four neuroleptics, and instead displayed CEEG profiles which more closely resembled the typical profile for psychostimulants. These findings may point to an altered metabolism, neurotransmitter defect, or other problem which alters the physiological and clinical response of therapy resistant schizophrenics to neuroleptic medication.

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