Table 1.

Intrinsic properties of type 1 and type 2 GABAergic IC neurons

GABAergic neuron	Input resistance (MΩ)	Depolarization slope (V/S)	Repolarization slope (V/s)	Half-height width (ms)	Spike threshold (mV)
Type 1	262.8 ± 42.9	38.7 ± 4.4	−38.0 ± 3.4	1.4 ± 0.1	−33.1 ± 1.8
Type 2	245.7 ± 53.9	40.4 ± 3.5	−41.2 ± 3.3	1.4 ± 0.1	−32.5 ± 1.7

All recordings were performed in vgat + IC neurons from non-noise-exposed animals (input resistance, type 1: n = 10 neurons, n = 5 animals, type 2: n = 6 neurons, n = 4 animals, p = 0.82; depolarization slope, type 1: n = 9 neurons, n = 5 animals, type 2: n = 6 neurons, n = 5 animals, p = 0.79; repolarization slope, type 1: n = 9 neurons, n = 5 animals, type 2: n = 6 neurons, n = 4 animals, p = 0.53; half-height width, type 1: n = 9 neurons, n = 5 animals, type 2: n = 6 neurons, n = 4 animals, p = 0.55; spike threshold, type 1: n = 10 neurons, n = 5 animals, type 2: n = 6 neurons, n = 4 animals, p = 0.82). Depolarization slope: maximum depolarizing slope, repolarization slope: minimum repolarizing slope, spike threshold: minimum voltage of first spike generation.