The main effect of Diagnosis was not significant (F1,51=0.001, p=0.985), indicating that SZ and HC did not differ in P1 amplitude. There was a main effect of Hemisphere (F1,51=16.986, p<0.001), indicating that electrodes contralateral to the visual stimuli had larger P1 amplitudes than ipsilateral electrodes, as expected. This effect did not differ between groups (Diagnosis × Hemisphere interaction: F1,51=2.355, p=0.131). There was also a main effect of Electrode (F3,153=7.742, p=0.001), indicating that the 4 electrode pairs differed in terms of their P1 amplitude. No other significant main effects or interactions were found.
