A) Percept of the cells showing multiple AP firing and phasic (single) AP firing patterns in each subtype of type 1 cells. B) Percept of the cells showing multiple firing and phasic firing in each subtype of type 2 cells. C) Percept of the cells showing multiple firing and phasic firing in each subtype of type 3 cells. In A to C, cell subtypes are indicated above bars and temperatures under bars. Open bars and solid bars represent multiple and phasic AP firing cells, respectively. D) AP firing numbers of type 1a (n = 37), type 1b (n = 15) and type 1c cells (n = 25) at 24°C (open bars) and 15°C (closed bars). E) AP firing numbers of type 2a (n = 8) and type 2b cells (n = 15) at 24°C (open bars) and 15°C (closed bars). F) AP firing numbers of type 3a (n = 6) and type 3b (n = 6) at 24°C and 15°C. In D to F, AP firing numbers were obtained at 2x rheobase levels. G) Rheobase levels of type 1a (n = 37), type 1b (n = 15) and type 1c cells (n = 25) at 24°C and 15°C. H) Rheobase levels of type 2a (n = 8) and type 2b cells (n = 15) at 24°C and 15°C. I) Rheobase levels of type 3a (n = 6) and type 3b (n = 6) at 24°C and 15°C. Data represent Mean ± SEM, ** P < 0.01, *** P < 0.001; ns, no significant difference.