The P110 response was much larger in amplitude in women (7.9 μV, SE = 0.79) than men (10.9 μV, SE = 0.79) as confirmed by the "gender" factor (F[1,38] = 7.11; p < 0.01), regardless of facial expression. The P1 response reached its maximum amplitude over the right occipital cortex in both genders (F[1,38] = 9.72; p < 0.0035) and was not sensitive to the affective content of the images. These effects are clearly visible in the ERP waveforms displayed in Fig. 3.
