Table 1.
Electrophysiological properties of phasic and tonic mouse sympathetic neurons.
| Phasic (n = 22) | Tonic (n = 11) | |
|---|---|---|
| RMP (mV) | -54 ± 1.6 | -54 ± 2.3 |
| Amplitude of action potential (mV) | 91 ± 4.8 | 87 ± 3.0 |
| Amplitude of AHP post-spike (mV) | -14 ± 1.7 | -17 ± 1.2 |
| Duration of AHP post-spike (ms) | 360 ± 41 | 371 ± 45 |
| Rinput (Mω) | 75 ± 19 (n = 6) | 85 ± 12 (n = 6) |
| Vthreshold (mV) | -58 ± 2.7 | -59 ± 3.4 |
| Rheobase (nA) | 0.21 ± 0.02; ** | 0.11 ± 0.02; ** |
| First spike latency pulse (ms) | 8.7 ± 0.7 | 8.1 ± 0.6 |
| Amplitude of ADP post-train (mV) | 1.2 ± 2.6 | 1.2 ± 4.6 |
| After-potential post-train (mV) | -52 ± 3.2 | -52 ± 4.6 |
| Firing freq. pulse 0.5 nA (spikes/s) | 2.1 ± 0.2; ** | 6.9 ± 0.8; ** |
| Firing freq. pulse 1.0 nA (spikes/s) | 5.1 ± 0.7; ** | 10.7 ± 1.9; ** |
∗∗P < 0.01 (Student’s t-test).