Aymeric Guillot has a Ph.D. in Sport Sciences from the Claude Bernard University of Lyon (2003) and is currently an Assistant Professor in the Center of Research and Innovation in Sport in Lyon (France). Using notably the techniques of autonomic nervous system recordings, functional magnetic resonance imaging, mental chronometry and electromyography recordings, he has worked on numerous mental/motor imagery studies, investigating primarily the effect of motor imagery in motor learning and motor performance, but also in motor recovery after stroke, and during mental rotation. He has published over 50 journal articles and book chapters, including extensive reviews and meta-analyses of the motor imagery literature. Christian Collet rreceived a Ph.D. in Neurophysiology in 1995, from the Claude Bernard University of Lyon (France). He is currently Professor at the Center of Research and Innovation in Sport (France) and leader of the research team "Mental processes and Motor Performance". During the last ten years, he has conducted research in the areas of human factors in ergonomics and sports behaviour. His main research interests include mental processes in professional and sporting activities. The main topics are concerned with the general field of motor imagery (learning, mental abilities, rehabilitation) and workload (emotional reactivity control, arousal, vigilance and mind concentration).