Table 1.

Comparison of electrophysiological properties of Hb9+ (type 1) and non-Hb9+ (type-2) interneurons

Membrane property Type 1 (n = 57) Type 2 (n = 8)
Percentage with spontaneous firing 31.6 100
Percentage with biphasic subthreshold oscillations 0 63
Resting membrane potential (mV) −51.7 ± 6.4 ND
Membrane capacitance (pF) 10.0 ± 1.5 16.8 ± 2.3*
Input resistance (MΩ) 903 ± 227 517 ± 170**
Percentage with PIR-evoked doublets 100 0
Percentage with time-dependent rectifier 0 100
  • ND, Not determined (could not be determined because of spontaneous activity). *p = 0.00025; **p = 0.0021.