Figure 2. The subject-averaged BOLD responses in the visual ROI without (left) and with (right) removal of the non-stimulus elevated signal intensities. In left panel, open diamonds, triangles, and circles depict the BOLD responses to 50ms, 17ms, and 0ms stimulation, respectively. After removal of the non-stimulus related activation, the stimulus-evoked BOLD responses to 50ms and 17ms duration of stimulation are represented in right panel by closed diamonds and triangles, respectively. Solid, dashed, and dotted lines in the right panel represent fitted gamma functions of the data.