Figure 3

(a) A pulsatile 40 Hz input is given to the RS cell. (b) Same as Fig. 2, but with the RS cell driven by the input (red trace). The SI cell still fires in phase with the RS cell, but its firing rate remains in the beta1 range (∼17 Hz). (c) Histogram of input phase (time from last pulse) when IB cell fires. For each bin, the height of the bar is the number of IB bursts in the simulation having the property that the time elapsed from the last input pulse to the first spike of the burst falls in that bin. The IB cell tends to fire more in certain phases of the external input, showing that the latter is having an effect on the former. Here and in all statistical analysis below, transients are ignored (see Appendix D.2)