Fig. 3. Example of the time course analysis technique for one subject. Each of the six signal time courses for this subject’s pain task are plotted, along with the calculated average time courses for the first scans of each session (scan 1) and the second scan of each session (scan 2). The signal change analyzed was the average of the last nine points for each of the painful stimulations. The average values for this subject are shown above each peak on the average time course plot.