Fig. 2.

Raster plots showing spike-time reliability (STR) of the ML model in the Type I conditions (upper panels, a–b) and the Type II conditions (lower panels, c–d). Parameter values used are given in Table 1. The coefficient ${\delta }_1$ of the intrinsic noise is 5 μA/cm² for (a)–(d), and the coefficient ${\delta }_2$ of the external noise is 0.91 μA/cm² in (b) and (d)