Capacitance jumps for P8–P10 calyxes in response to depolarizations that give similar Ca entry at RT and PT
| Parameter | RT | PT | p (t test) |
|---|---|---|---|
| Brief depolarizations (1 ms RT, 0.5 ms PT) | |||
| qCa (pC) | 1.7 ± 0.13 (n = 13) | 1.62 ± 0.13 (n = 9) | >0.05 |
| ΔCm (fF) | 21 ± 5.4 (n = 15) | 32 ± 6.2 (n = 9) | >0.05 |
| ΔCm/ qCa (fF/pC) | 16 ± 3.2 (n = 12) | 20 ± 3.4 (n = 9) | >0.05 |
| Long depolarizations (10 and 30 ms) | |||
| 10 ms depolarization | |||
| qCa (pC) | 19 ± 1.0 (n = 25) | 21 ± 1.7 (n = 17) | >0.05 |
| ΔCm (fF) | 335 ± 14 (n = 25) | 432 ± 24 (n = 17) | <0.01 |
| 30 ms depolarization | |||
| qCa (pC) | 48 ± 3 (n = 25) | 49 ± 5 (n = 16) | >0.05 |
| ΔCm (fF) | 471 ± 25 (n = 25) | 640 ± 34 (n = 16) | <0.01 |
| Steady-state exocytosis | |||
| ΔCm 30 ms − ΔCm 10 ms (fF) | 148 ± 22 (n = 25) | 233 ± 21 (n = 12) | <0.05 |