Morphology of biocytin-filled type II fibers in the apical turn of young rat cochleas
| Fiber number | Spiral process (µm) | Major synaptic area | |||||
|---|---|---|---|---|---|---|---|
| Distance to apex (µm) | Arbors (n) | Total synaptic branches | Distance from apex (µm) | Length (µm) | Branches (n) | ||
| 1 | 899.2 | 843 | 1 | 21 | 1532 | 97.3 | 13 |
| 2 | 516.4 | 1121 | 1 | 13 | 1448.3 | 150.2 | 9 |
| 3 | 1194.7 | 566.5 | 1 | 21 | 1618.3 | 165.2 | 11 |
| 4 | 617.8 | 613.5 | 1 | 12 | 1082.2 | 160.5 | 12 |
| 5 | 585.5 | 997.8 | 1 | 15 | 1109 | 52.8 | 9 |
| 6 | 733.9 | 658.1 | 1 | 22 | 1108.3 | 161.3 | 12 |
| 7 | 549.1 | 608 | 1 | 17 | 920.3 | 224.8 | 17 |
| 8 | 612.8 | Not available | 1 | 13 | Not available | 101.3 | 12 |
| damage | |||||||
| Average ± SEM | 714 ± 81 | 773 ± 77 | 17 ± 1.4 | 1260 ± 95 | 139 ± 19 | 12 ± 1 | |
| 9 | 400.65 | 488.8 | 2 | 8 | 692 | 60.9 | 8 |
| 10 | 720.1 | 983 | 2 | 14 | 1243.4 | 168 | 11 |
| 11 | 983 | 577 | 2 | 7 | 1255.2 | 139.6 | 7 |
| 12 | 689.1 | 613 | 2 | 20 | 1095.4 | 135.2 | 15 |
| 13 | 413.5 | 479.5 | 3 | 24 | 700 | 130.245 | 18 |
| 14 | 475.5 | 919 | 2 | 13 | 1107.8 | 149.5 | 13 |
| 15 | 649.7 | 924 | 2 | 23 | 1423.4 | 193.4 | 20 |
| Average ± SEM | 619 ± 79 | 712 ± 83 | 16 ± 3 | 1074 ± 106 | 140 ± 15 | 13 ± 2 | |
| Total average ± SEM | 669 ± 56 | 742 ± 55 | 16 ± 1 | 1167 ± 72 | 139 ± 12 | 12 ± 1 | |