FIGURE 6 | Different patterns of responses for a visual neuron in the SC evoked by reversing stimulus direction. (A,B) Raster plots showing responses to visual stimuli moving to opposite directions at 200 deg s − 1 . (C,D) , PSTHs for responses shown in (A,B) , bin size 0.5ms. (E,F) Amplitude spectra of the corresponding ACHs PSTH computed from (C,D) . Prominent peaks show the dominant frequencies in the responses. Note the clear decrease in firing rate at the beginning of the response for both directions in the raster plots. (G) The distribution of differences between frequencies found during responses to two directions of stimulus movement. (H) The scatter plot showing a shift of oscillation strength to the direction of movement from left to right. The black solid line indicates a linear fit to the