Table 2.
Intrinsic membrane properties of POA neurons measured in ACSF.
| Property/Clusters | I (N = 23) | II (N = 38) | III (N = 4) | IV (N = 36) | V (N = 6) |
|---|---|---|---|---|---|
| RMP (mV) | −56.5 ± 2.2 | −58.2 ± 1.4 | −57.1 ± 4.5 | −56 ± 1.4 | −54.3 ± 2.1 |
| TC (ms) | 47.6 ± 5.2 | 47.0 ± 2.7 | 92.9 ± 15.3 | 66.2 ± 3.9 | 110.3 ± 10.8 |
| Rinput (GΩ) | 0.42 ± 0.04 | 1.0 ± 0.03 | 3.7 ± 0.15 | 2.0 ± 0.07 | 5.9 ± 0.04 |
| Csoma (pF) | 144.3 ± 24 | 45.8 ± 2.8 | 24.9 ± 3.7 | 34.3 ± 3.4 | 19.2 ± 2.8 |
| AHP (mV) | 12.2 ± 1.3 | 10.2 ± 0.8 | 13.7 ± 5.8 | 11.0 ± 1.0 | 15.4 ± 3.7 |
| SA (mV) | 56.1 ± 2.7 | 52.6 ± 2.3 | 60.7 ± 5.7 | 53.1 ± 1.9 | 54.3 ± 4.5 |
| Ithreshold (pA) | 13.0 ± 2.0 | 8.2 ± 1.2 | 3.9 ± 0.8 | 6.0 ± 0.7 | 3.3 ± 0.8 |
| Sthreshold (Hz) | 3.3 ± 0.6 | 2.4 ± 0.3 | 2 ± 0.4 | 3.5 ± 0.4 | 5.3 ± 1.0 |
| CV | 1.1 ± 0.1 | 1.1 ± 0.1 | 1.0 ± 0.1 | 1.1 ± 0.1 | 2.3 ± 0.6 |
| ADP (mV) | 1.4 ± 0.4 | 1.6 ± 0.4 | – | 0.6 ± 0.2 | 0.12 ± 0.0 |
RMP (resting membrane potential); TC (membrane time constant); Rinput (input resistance); Cm (membrane capacitance); AHP (after hyperpolarization potential); APA (action potential amplitude); TI (action potential threshold current); ST (number of spikes at threshold current); APD (action potential duration); CV (coefficient of variation); ADP (after depolarization potential). Not shown are variables for rectifying and RS. See definitions in Materials and Methods section and Figure 1.