Facially distributed pattern-evoked potentials in multiple sclerosis

Abstract

Among 56 established cases of multiple sclerosis in our clinic from April 1978 to March 1985, optic neuritis was found in 38; 21 cases were bilateral. We studied pattern-evoked potentials detected with 16 electrodes placed on both the scalp and the facial area. Pattern-evoked potentials (PERGs) were obtainable at the facial area in multiple sclerosis patients with optic neuritis, except in long-standing cases. However, a significant reduction of amplitude was found even in cases without optic neuritis. No correlation was found between visual acuity and amplitude or peak latency of PERGs in MS patients.

Check size and defocusing effects on equipotential maps of pattern-evoked electroretinograms

“…On the contrary the topography of the pattern-evoked retinal potentials (PERG) has been studied very little Adachi-Usami, 1984, 1986, although its clinical applicability, especially in glaucoma, has been reported extensively (Van Lith et al, 1984;Van den Berg et al, 1986). We found the largest potential values of the PERG very near the stimulated eye in normals and in several cases of visual disorders .…”