Figure 2.

Design and psychophysical result. A, Schematic description of a trial in psychophysical and fMRI experiments. A face stimulus (FIO, FBO, or FO) was presented with a duration of 50, 150, 250, 350, and 450 ms, followed by a 300 ms mask. Subjects were asked to judge the view direction of the face stimulus, either left or right. B, Psychophysical result. The performance of view direction judgment was plotted as a function of stimulus duration for FIO, FBO, and FO stimuli. Error bars denote 1 SEM calculated across subjects.