Table 2.
Action potential properties
| RS | WB | SB | CA1 | |
|---|---|---|---|---|
| Spike threshold, mV | −46.6 ± 0.9 (12) | −45.2 ± 0.6 (12) | −46.8 ± 0.8 (20) | −46.3 ± 0.6 (20) |
| Rheobase, pA | 283 ± 28 (12) | 314 ± 34 (12) | 234 ± 14 (20) | 213 ± 21 (20) |
| Half-width, ms | ||||
| 1st spike | 0.79 ± 0.02 (26) | 0.83 ± 0.03 (15) | 0.84 ± 0.03 (36) | 0.95 ± 0.03 (20) |
| 2nd spike | — | 1.16 ± 0.04 (15) | 1.17 ± 0.03 (36) | — |
| 3rd spike | — | 0.84 ± 0.03 (13)* | 1.68 ± 0.07 (14) | — |
| Amplitude, mV | ||||
| 1st spike | 95.4 ± 2.3 (12) | 90.2 ± 2.9 (12) | 93.0 ± 3.3 (20) | 112.0 ± 9.0 (20) |
| 2nd spike | — | 87.6 ± 2.4 (12) | 87.2 ± 2.5 (20) | — |
| 3rd spike | — | 90.5 ± 2.9 (12)* | 79.7 ± 4.0 (8) | — |
| Peak dV m/dt, rise | ||||
| 1st spike | 299 ± 17 (12) | 264 ± 18 (12) | 297 ± 22 (20) | 381 ± 18 (20) |
| 2nd spike | — | 208 ± 15 (12) | 217 ± 15 (20) | — |
| 3rd spike | — | 254 ± 17 (12)* | 176 ± 18 (8) | — |
| Peak dV m/dt, fall | ||||
| 1st spike | −110 ± 5.0 (12) | −88.8 ± 5.1 (12) | −103 ± 5 (20) | −94.8 ± 4.7 (20) |
| 2nd spike | — | −51.6 ± 3.3 (12) | −53.3 ± 2.0 (20) | — |
| 3rd spike | — | −87.3 ± 5.4 (12)* | −38.2 ± 3.1 (8) | — |
| Interspike interval, ms | ||||
| 1st | — | 4.73 ± 0.17 (15) | 4.09 ± 0.12 (35) | — |
| 2nd | — | — | 5.40 ± 0.41 (14) | — |
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Values are means ± SE; n is in parentheses. * Single action potential following a burst.