Electroencephalographic Spectra and Reaction Time in Disorders of Higher Nervous Function

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Abstract
Cerebral electrical abnormalities associated with variability of attention and responsivity were sought in individuals with schizophrenia and epilepsy. Experimental and control subjects were given stimulus-response tasks, and average power spectra for brief electroencephalographic epochs preceding responses of short and long latency were compared. Spectra that precede long-latency or erroneous responses resemble the "ramp" configuration of spectra computed from scalp electroencephalograms for 1-second epochs triggered by (time-locked to) focal subcortical spikes.