that there were no group differences in the overall FRN amplitude, that is, neither in its midfrontal sink nor in its centroparietal source. This suggests that patients did not show evidence of any response monitoring deficit91,92 during these tonal and phonetic oddball tasks, in which their accuracy was on par with that of controls. This is in striking contrast to our recent finding of a markedly reduced response-locked FRN in schizophrenia during auditory and visual word recognition memory tasks.82
