Table 3.
Passive and active membrane properties of lamina II neurones (irrespective of the EGFP-expression) classified according to their firing patterns
| Delayed firing neurones (D) (n = 21–30) | Gap firing neurones (G) (n = 43–48) | Initial bursting neurones (IB) (n = 62–65) | Mixed initial bursting/ gap firing neurones (IB/G) (n = 16–20) | Tonic firing neurones (T) (n = 8–10) | Other neurones (O) (n = 14–20) | |
|---|---|---|---|---|---|---|
| Statistical significance was assessed by one-way ANOVA followed by a Mann–Whitney test corrected by the Bonferroni adjustment. *, P < 0.05, **, P < 0.01 in the posthoc test, followed by the abbreviation of the group the comparison was made with. n, number of observations. | ||||||
| Distance from overlying white matter (μm) | 54 ± 4 | 69 ± 4 | 53 ± 3 | 61 ± 6 | 53 ± 8 | 65 ± 5 |
| **IB | **G | |||||
| Resting membrane potential (RMP, mV) | −59 ± 1 | −64 ± 1 | −60 ± 1 | −63 ± 2 | −63 ± 2 | −63 ± 2 |
| **G | **D | |||||
| Membrane resistance (MΩ) | 1129 ± 101 | 1304 ± 101 | 893 ± 51 | 1132 ± 112 | 1290 ± 223 | 1090 ± 132 |
| **IB | **G | |||||
| Membrane capacitance (pF) | 38 ± 2 | 37 ± 2 | 55 ± 2 | 42 ± 3 | 47 ± 7 | 43 ± 4 |
| **IB | **IB | **D,G | ||||
| Action potential threshold (mV) | −31 ± 1 | −31 ± 1 | −35 ± 1 | −33 ± 2 | −39 ± 1 | −34 ± 2 |
| *IB, **T | **IB,T | *D,**G | **D,G | |||
| Action potential threshold – RMP (mV) | 27 ± 1 | 34 ± 1 | 25 ± 1 | 31 ± 3 | 24 ± 3 | 29 ± 3 |
| *G | *D,**IB | **G | ||||