The showCmp GUI allows the user display a comparison between the resulting maps from any pair of activation maps previously calculated. When the user presses the RUN button, a comparison map is calculated and displayed. The comparison map is color coded to indicate at each pixel whether there was activation in the first map, the second map or in both maps. If the timeCourse Plot option is selected, then when the image is clcked by the mouse the underlying time series is plotted.