The Case of the Disappearing Spindle Burst

Figure 2

Spindle burst activity in relation to twitches in P4, P8–10, and P12 rats. (a) Waveform averages of local field potentials (LFPs) recorded from the hindlimb region of motor cortex (P4: = 1,172 twitches across 6 pups; P8–10: = 4,047 twitches across 11 pups; and P12: twitches across 6 pups). Peak power in the LFP occurs after hindlimb twitches (dashed red lines). Acceptance bands () are also shown (dashed blue lines). Adapted from Tiriac et al., Current Biology, 2014 [11]. (b) Twitch-triggered time-frequency spectrograms of LFPs from individual P4 (168 twitches), P8 (294 twitches), and P12 (135 twitches) rats. Average peak power at spindle frequency (10–15 Hz) is prominent after hindlimb twitches (dashed red lines).