Responses of three example color-selective neurons recorded in the PITC. A–C, Responses of three neurons (A, Cell 4; B, Cell 5; C, Cell 6) are plotted using the same format as in Fig. 2. Sparseness indices for the bright and dark sets were, respectively, 0.73 and 0.69 for Cell 4; 0.38 and 0.28 for Cell 5; and 0.74 and 0.79 for Cell 6.