Abstract:ABSTRACT.Purpose: We evaluated the amplitude of steady state pattern visually evoked cortical potentials (St PVECP) by comparing the amplitude ratio to transient PVECP (Tr PVECP) with the latency of Tr PVECP in macular, optic nerve, and chiasmal lesions. Methods: PVECPs were obtained by pattern reversal stimulation of both 3 times and 12 times per second from normal subjects and patients. The peak latency of the P100 component of Tr PVECP and the amplitude ratio (St PVECP/ Tr PVECP) were studied. Results: Rati… Show more
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