Figure 1.

The experimental procedure. A, Schematic representation of the stimulus (corrugation). The mean disparity and the range of disparity modulation were chosen for each cell individually according to the values obtained from the disparity-tuning curve (B) of the cell. Corrugation frequency (1/p; p = spatial period) was varied systematically in random order between trials. The planar control stimulus was presented at a disparity equal to the mean disparity of the corrugation. B, An example of the disparity-tuning curve for cell ruf150. The arrows indicate the mean disparity of the corrugation and the range for which the depth modulation of the corrugation was chosen for this cell.