Fig.1. Bursting patterns in type 1 Dahlgren cells. (A) Spontaneous bursting pattern. (B) A single burst (bottom trace) and instantaneous spike frequency (top trace) revealing acceleration and deceleration phases with a peak firing frequency of approx. 4Hz. (C) Action potential duration (measured at half-maximal amplitude) increases with instantaneous spike frequency. At maximal firing rate, spike duration increases (approximately 30%) compared to the first spike of the burst.