Fig. 3

Examples of spectra of HGO power changes caused by drifting gratings moving at three velocities in individual subjects from the TD and ASD groups. a Individual spectra of HGO response. Upper row—TD subjects; bottom row—ASD subjects. See Fig. 2 for color designations. Although faster-moving gratings produce shift toward higher response frequency in individual subjects from both groups, the frequency shift is greater in TD individuals. Noticeable exception is the subject (h) from the ASD group. b Velocity-specific peak frequencies (VSPF) of the HGO response plotted as a function of stimulus velocity for individual participants (thin lines). The thick lines show group means for the TD and ASD subjects