Changes in time profiles of each input to the TN through training. A–C, Time profiles of RGC input (A), IN input (A), FF input (B), and TN input (C) to the TN evoked by fast-moving bars of four orthogonal directions before (dashed lines) and after (solid lines) training (one trial). The IN input is shown by the dotted lines (A). D, Contribution of each input to the integrated total input. White, Integrated RGC input; gray, integrated IN input; black; integrated TN input (1 trial).