Figure 2.

Twitch and wake movements trigger reafferent responses in M1. A, Mean (±SEM) percentage of time spent in active sleep at P8 (white) and P12 (gray). Black dots show values for individual pups. B, Mean (±SEM) rate of forelimb movements for twitches during active sleep (blue) and movements during wake (red) at P8 (left) and P12 (right). Gray lines show values for individual pups. Asterisks denote significant difference between twitches and wake movements (p < 0.05). C, Peristimulus time histograms of mean firing rate of M1 units in relation to twitches (blue) and wake movements (red) at P8 (left) and P12 (right). Asterisks denote significant difference between responses to twitches and wake movements (p < 0.05).