Fig. 6. Histograms of peristimulus distance of the neural activity of 5 unit pairs recorded simultaneously from two electrodes spaced 250 µm apart. Each histogram is based on 10 trials. Left, responses to AP motion; right, responses to PA motion. Blue, responses of units recorded with the more anterior electrode; red, responses of units recorded with the more posterior electrode. Insets on the right indicate electrode positions for each recording set relative to the midbrain surface.