“…VEP studies have shown that early components (e.g., P50, N70, and P100) have higher amplitudes (La Marche et al, ; Celesia et al, ; Mitchell et al, ; Shibata et al, ; Sharma et al, ) and/or shorter latencies (Stockard et al, ; Celesia et al, ; Emmerson‐Hanover et al, ; Shibata et al, ; Malcolm et al, ; Langrova et al, ; Proverbio et al, ; Sharma et al, ) in females compared with males (but see Grabowska et al, ). There is evidence that the properties of these VEP components are related to contrast sensitivity (discussed earlier) performance (Allen et al, ; Norcia et al, ; Souza et al, ), although the sex differences seen in these studies may have been secondary to underlying anatomical differences (Christie and McBrearty, ; Dekaban and Sadowsky, ; Reilly et al, ; Allison et al, ). Other studies have shown that sex differences in VEPs are not related to differences in gonadal hormones (Buchsbaum et al, ; Dyer and Swartzwelder, ) and arise in the visual cortex, not in the retina (Celesia et al, ; Tomoda et al, ).…”