Hi, I'd like to be able to statistically compare the time it takes for the event-related response to peak across two regions. So far, I've been using rfxplot to extract peri-stimulus time histograms (PSTHs) for the two regions I'd like to compare. (rfxplot uses the FIR approach.) I've extracted them in 2 sec bins (corresponding to my TR), beginning at stimulus onset and ending 10 seconds later (trials last 3-4 seconds). For each subject, is it valid to define the time to peak as simply the time bin with the maximum value, and to simply use a paired samples t-test to compare the peak time bin across subjects?