Table 2.

Results for bipolar output partitioned as 21 and 21 ribbon synapses

GCs with 1, 2, or 3 principal S cones S cones dominating 0, 1, or 2 GCs
Trial 1 2 3 0 1 2 S cones dominating ≥1 GC
Idealized 4 (50%) 2 (25%) 2 (25%) 0 4 0 4 (100%)
Mix 3 (38%) 1 (12%) 4 (50%) 1 3 0 3 (75%)
Mean random plus balanced 3.20 (40%) 2.15 (27%) 2.65 (33%) 1.2 2.40 0.40 2.80 (70%)
Mean random plus unbalanced 2.80 (35%) 2.35 (29%) 2.85 (36%) 1.70 1.80 0.50 2.30 (58%)

  • These results are obtained from arrays in which three cones supply output to each ganglion cell (GC) and 21 and 21 ribbon synapses connect S-cone ON bipolar cells and BY ganglion cells. A complete combinatorial set of ganglion cells requires four diamonds, with eight ganglion cells and four S cones. Idealized results are from the array with four idealized S cones in Figure 6A. Mix results are from the array comprising four real S cones in Figure 7C. Mean random plus balanced results are calculated from the data in Figure 8 for arrays like that in Figure 7C. Mean random plus unbalanced results are calculated from the data in Figure 8.