Pattern reversal evoked potentials (VEPs) have been recorded in 100 normal subjects with an average age of 37.6 years (range 11-69). We found significantly shorter latencies of the P 100 for binocular stimulation compared to monocular stimulation. Women under 50 years showed shorter latencies than men for both binocular and monocular stimulation. Men showed no significant latency dependence of age. However, women had a significant latency prolongation above an age of 50 years, indicating a sex specific influence on latencies.