Synchronicity between STN and motor cortex during WAKE and REM sleep movements. A, The temporal evolution of the phase locking value is shown for the period 5 s before and after movement onset. During REM sleep movements, a reduced synchronicity was observed, whereas no modulation of the phase locking was found during WAKE. NREM sleep showed a higher baseline synchronicity with reduction upon movement initiation. B, Pairwise comparison of normalized phase locking values of the period prior (pre) and after (post) movement onset showed a significant difference only during REM and NREM sleep movements: WAKE, n = 30; REM, n = 113; NREM, n = 99. *p < 0.05.