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Their Use in the Diagnosis of Retrochiasmatic Lesions

Yoshiyuki Kuroiwa, MD; Gastone G. Celesia, MD

Arch Neurol. 1981;38(2):86-90.

Abstract
• We measured several parameters of cortical potentials evoked by visual stimulation to produce a profile suggestive of retrochiasmatic lesions. Characteristic abnormal responses included (1) very low amplitude or absent transient visual evoked potentials (T-VEPs) after stimulation of the affected hemifield, (2) reversal of normal pattern amplitude of the T-VEP distribution after stimulation of the affected hemifield, (3) abnormal lateral occipital ratio, (4) absent or very low amplitude steady-state VEPs after stimulation of affected hemifield, and (5) abnormal midoccipital ratio.

Author Affiliations
From the Department of Neurology, John Cochran Veterans Administration Hospital and St Louis University, St Louis (Dr Kuroiwa), and the Department of Neurology, William S. Middleton Memorial Veterans Hospital and the University of Wisconsin Center for Health Sciences, Madison (Dr Celesia).

Footnotes
Accepted for publication June 21, 1980.

Reprint requests to Department of Neurology, William S. Middleton Memorial Veterans Hospital, 2500 Overlook Terr, Madison, WI 53705 (Dr Celesia).

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