The waveforms of the group mean SEP of each sex.
With SEPs recorded from age-matched normal human subjects, 100 males and 100 females 22.34 + 1.69 years, it was confirmed that the Group Mean SEP of each sex each converges to a given waveform which significantly differed from each other. The waveform of the Group Mean SEP for females consisted of the 12 components, and was approximately tetraphasic within 500 msec in latency, while that for males consisted of the same components except for N4 and P4. There was a high convex arch with P4 (82 msec) between P2 and N6 for females, but a low hollow slope without the peak for males. With Scaled SEPs, which were converted from SEPs by Amplitude Scaling, the results similar to those with SEPs were obtained.
D000328:Adult; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D008297:Male; D008475:Median Nerve / Q000502:physiology; D012737:Sex Factors; D013997:Time Factors