Journal of Korean Neurosurgical Society  1987;16(4):995-1004

Clinical Applications of Visual Evoked Potentials.

Kwang Hwi OK 1 ; Heung Sup CHUNG ; Jung Keun SUH ; Hoon Kap LEE ; Jeong Wha CHU

Affiliations

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Keywords

Visual evoked potential; P1 latency; Focal brain lesion; Diffuse brain lesion

Country

Republic of Korea

Language

Korean

Abstract

Visual evoked potentials were elicited by flash in 29 patients with a variety of cerebral lesions and in 10 normal controls. In 12 patients with focal brain lesions, no wave form could be recorded in one side. Of the remaining 23 sides, the average P1 latency showed no difference from that of the normal controls. In 17 patients with diffuse brain lesions no wave form could be elicited in 12 sides. Average P1 latency of remaining 22 sides showed statistlcally significant difference from that of normal controls. In this study it appears that delayed P1 latencies are associated with diffuse cerebral lesions rather than with localized lesions.