Table 1.
Properties of synaptic transmission at two calyceal synapses
| Endbulb | Calyx | |||
|---|---|---|---|---|
| Normal | Deafness | Normal | Deafness | |
| Evoked EPSC amplitude (nA) | 2.9 ± 0.5 | 4.8 ± 0.6* | 5.1 ± 0.8 | 6.0 ± 1.2 |
| Miniature EPSC amplitude (pA) | 87 ± 8 | 99 ± 8 | 42 ± 7 | 50 ± 7 |
| Release probability (Pr) | 0.49 ± 0.10 | 0.77 ± 0.08* | 0.78 ± 0.07 | 0.77 ± 0.05 |
| Quantal amplitude from variance—mean (pA) | 105 ± 13 | 103 ± 13 | 33 ± 4 | 57 ± 10 |
| Number of release sites | 90 ± 20 | 97 ± 13 | 490 ± 50 | 540 ± 110 |
| Tetanic depression (%) | 88 ± 1 | 93 ± 1** | 72 ± 4 | 73 ± 5 |
| Asynchronous EPSC frequency (Hz) | 7 ± 1 | 98 ± 21** | 2 ± 1 | 3 ± 1 |
*
Significant difference (P < 0.05) with normal animals
**
significant difference (P < 0.01) with normal animals.