Examples of spontaneous burst and tonic activity of RT units in a WT (A, B, and C) and a Cav3.2 KO (D, E, and F) mice. (A and D) Top panel: an 8-s-long trace of the spontaneous activity of the RT unit. The arrowheads at the bottom of the beginning of the trace indicate burst firing. The parts pointed to by the stars and arrows are segments expanded in the lower panels. (B and E) PC1-PC2 plot (left panel) and superimposed wavelet plot (right panel) of the spike clusters of the units shown in figures A and D. (C and F) Inter-spike-interval (ISI) histograms of the examples in A and D; bin = 1 ms. Time scales for the upper panels of A and D are 1 s and for the expanded traces are 10 ms for the burst and 0.1 s for the tonic activities.