Table 4.

Photoreceptor Connection Counts and the Cone Count/Dendritic Spread Area Ratios for the 9 Common Connectivity Subtypes.

	All					Cone Count				Cone Count/Dendritic Spread Area
Subtype	R	G	B	UV	Rod	All	OFF	ON	ON-OFF	All	OFF	ON	ON-OFF
G	0	15 ± 6	0	0	0	15 ± 6	15 ± 6	n/a	n/a	0.01 ± 0.00Δ	0.01 ± 0.00	n/a	n/a
GBUV	0	8 ± 6	4 ± 3	5 ± 3	0	17 ± 8	20 ± 8 *	10 ± 1 * #	17 ± 8#	0.04 ± 0.02	0.04 ± 0.02	0.04 ± 0.01	0.04 ± 0.02
RG	7 ± 4	9 ± 4	0	0	0	16 ± 6	16 ± 6	16 ± 5	17 ± 7	0.03 ± 0.02Δ	0.02 ± 0.01	0.05 ± 0.03	0.03 ± 0.01
RGB	7 ± 4	11 ± 7	3 ± 2	0	0	21 ± 6Δ	19 ± 6	23 ± 11	21 ± 2	0.03 ± 0.02	0.04 ± 0.02 *	0.03 ± 0.02	0.02 ± 0.01 *
RGBUV	5 ± 3	7 ± 3	4 ± 3	4 ± 2	0	21 ± 7Δ	21 ± 7	22 ± 13	20 ± 7	0.05 ± 0.03Δ	0.05 ± 0.02	0.03 ± 0.01	0.06 ± 0.04
RGBRod	8 ± 3	8 ± 3	2 ± 1	0	9 ± 8	17 ± 6	16 ± 5 *	20 ± 6 * #	14 ± 4#	0.04 ± 0.02Δ	0.05 ± 0.02	0.04 ± 0.01	0.03 ± 0.02
RGBUVRod	7 ± 3	9 ± 5	4 ± 3	4 ± 2	6 ± 6	24 ± 9Δ	26 ± 8	15 ± 5	25 ± 9	0.05 ± 0.02Δ	0.05 ± 0.02 *	0.05 ± 0.03	0.02 ± 0.01 *
RGRod	8 ± 3	7 ± 3	0	0	9 ± 9	15 ± 5Δ	15 ± 4	15 ± 4	15 ± 7	0.04 ± 0.01	0.04 ± 0.01	0.04 ± 0.02	0.03 ± 0.02
RRod	9 ± 2	0	0	0	55 ± 26	9 ± 2Δ	n/a	9 ± 2	n/a	0.02 ± 0.00Δ	n/a	0.02 ± 0.00	n/a
Total	6 ± 4	8 ± 5	2 ± 2	1 ± 3	8 ± 15	18 ± 7	18 ± 7 *	15 ± 7 * #	18 ± 7#	0.04 ± 0.02	0.04 ± 0.02	0.04 ± 0.02	0.03 ± 0.02

n/a, not applicable;

^Δ,*,#p<0.05 (Student t-test);

^Δbipolar cells of a connectivity subtype were compared with those of the other 8 subtypes;

^*OFF, ON, and ON-OFF bipolar cells of a connectivity subtype or the 308 bipolar cells were compared.

^#OFF, ON, and ON-OFF bipolar cells of a connectivity subtype or the 308 bipolar cells were compared.