Table 1.

Development of passive properties

Property	P8	P16	P27
Resting membrane potential, mV	−34.8 ± 1.8*† (n = 27)	−51.8 ± 0.9‡ (n = 25)	−61.2 ± 0.9 (n = 39)
Input resistance, MΩ	642.2 ± 32.7*† (n = 27)	350.2 ± 15.2‡ (n = 25)	249.2 ± 17.3 (n = 39)
Membrane time constant, ms	49.3 ± 2.7† (n = 24)	56 ± 2.1‡ (n = 26)	33 ± 1.6 (n = 39)

Values are shown as means ± SE; n, number of cells.

^*P < 0.001, postnatal day (P)8 vs. P16;

^†P < 0.001, P8 vs. P27;

^‡P < 0.001, P16 vs. P27.