Table 1.
Summary of passive and active membrane responses of in vitro recorded Im neurons
| Parameter | Average value ±s.e.m. | n |
|---|---|---|
| RMP (mV) | −71.2 ± 1.1 | 37 |
| Rin (MΩ) | 641 ± 20 | 43 |
| Membrane τ (ms) | 20.3 ± 0.8 | 42 |
| Cm (pF) | 30 ± 2 | 42 |
| AHP (mV) | −12.8 ± 0.6 | 45 |
| AP amplitude (mV) | 75.7 ± 1 | 45 |
| AP width (ms) | 0.8 ± 0.05 | 44 |
| Sag ratio | 0.86 ± 0.03 | 42 |
| Adaptation index | 0.6 ± 0.04 | 38 |
| Max. firing (Hz) | 37.3 ± 2 | 38 |
Abbreviations: AHP, afterhyperpolarization; AP, action potential; Cm, membrane capacitance; Max. firing, maximal firing; RMP, resting membrane potential; Rin, input resistance