commenced much earlier and persisted much longer in males as evident in ORN and ORP; in females it started much later than 100 ms, as evident only in ORP amplitude. On the other hand, there were no statistically significant gender differences in ORN and ORP features while processing valence (loss vs. gain), i.e. both genders processed the ‘loss’ against the ‘gain’ equally well (see Fig. 6, 1st row). On the other hand, although not statistically significant, there was a consistent trend that females produced higher amplitude and shorter latency across task conditions and scalp regions (Figs. 3, 4, 6, 7). Similar gender differences have been reported in several ERP paradigms as well [56-60]. According to Hoffman and Polich [31], females, as compared to males, produce larger P2, N2 and P3 components during an oddball paradigm. On the other hand, despite these subtle differences in ERPs, it is also to be noted that males and females did not significantly differ across any of the impulsivity / behavioral variables in our study; this shows that behavioral factors are probably less sensitive than ERP variables in eliciting the gender differences in the SOG paradigm.
