Fig. 4.

fMRI responses to pulse stimuli. Eachcurve is the mean time course of the fMRI response (pixel intensity) averaged across cycle repetitions and averaged across all pixels in the calcarine sulcus. Each panel shows data for a different pulse duration. Different curves within a panel correspond to different contrasts. The stimulus time course also is depicted in each panel. The fMRI responses increase with stimulus contrast, and the fMRI responses are blurred and delayed with respect to the time course of the stimulus. Error bars represent 1 SE.