Table 2.

The 5 subthreshold and 8 suprathreshold electrophysiological properties with their corresponding average values and contributions to the first 3 principal components from PCA performed separately for sub- and suprathreshold electrophysiological parameters (eigenvalues PC1–PC3, n = 137 cells from 41 mice).

#	Description	Mean ± SEM	PC1	PC2	PC3
1	Vrest: resting membrane potential	−71.82 ± 0.59 mV	0.46	0.48	0.54
2	m: membrane time constant	35.26 ± 0.86 ms	−0.47	0.26	0.01
3	R IN: input resistance	122.23 ± 2.57 MΩ	−0.25	0.71	−0.52
4	Sag ratio: Sag in percentage	7.06 ± 0.31%	−0.17	0.39	0.51
5	Rheobase: minimal current necessary to evoke spike	115.7 ± 5 pA	0.69	0.2	−0.42
1	APVmin: minimal membrane voltage during AHP	−48.81 ± 0.41 mV	−0.11	0.5	−0.04
2	APVpeak: peak membrane voltage of spike	46.1 ± 0.69 mV	0.71	0.08	0.04
3	APVthresh: threshold voltage at spike initiation	−33.96 ± 0.26 mV	0.2	0.11	0.77
4	APVslope: the maximal slope of the spike	141.75 ± 3.05 mV/ms	0	−0.23	−0.01
5	APVhalf: membrane voltage at spike half	6.07 ± 0.37 mV	0.12	−0.22	0.29
6	APVamp: amplitude of the spike	80.06 ± 0.72 mV	−0.5	−0.13	0.54
7	AHP: maximal amplitude of AHP	14.85 ± 0.41 mV	0.39	−0.44	0.07
8	APfreqmax: maximal spike frequency	9.99 ± 0.37 Hz	−0.16	−0.65	−0.14