Synaptic inputs to ON-parasol ganglion cells
| Animal | Cell number | Inputs from bipolar cells | Inputs from amacrine cells |
|---|---|---|---|
| 1 | 1 proximal | 9 21% | 34 79% |
| distal | 85 24% | 265 76% | |
| 1 | 2 | 36 17% | 172 83% |
| 2 | 3 | 41 17% | 198 83% |
| 2 | 4 | 19 13% | 122 87% |
| 2 | 5 | 21 18% | 95 82% |
Synaptic connections of 5 ON-parasol ganglion cells from two baboons. Cell 1 was first sectioned with a sliding microtome, and the sections containing the perikaryon and proximal dendrites were compared with those containing only distal dendrites. Amacrine cells provided the major input to both regions. The remaining 4 cells were not sampled systematically. They received 83% of their input from amacrine cells on average. No significant differences among these 4 cells were observed using a χ2 test (χ2 = 1.3,p = 0.73).