After-effect of Movement in the Stimulated and Opposite Eyes during and after Pressure Blinding

IN a recent communication, Barlow and Brindley1 have suggested that the after-effect of seen movement in man is not caused by the suppression of the maintained discharge of directionally selective ganglion cells in the retina. Their argument is based on the observation that after pressure blinding the stimulated eye the after-effect can be seen in the opposite (unstimulated) eye.