“…Such mental representations of movement without analogous body movement (Guillot & Collet, 2005) occur regularly and spontaneously, especially in states with naturally high motor cortical activation, such as rapid eye movement (REM) sleep (Desseilles et al, 2011, Dresler et al, 2011, Porte and Hobson, 1996and Speth et al, 2013, and have been associated with motor learning and rehearsal (Hobson, 2009 andWalker et al, 2002). Motor simulation tasks can also be purposefully used in waking to benefit specific motor performances (Arora et al, 2011, Driskell et al, 1994, Jackson et al, 2006, Meister et al, 2004and Schuster et al, 2011.…”