Study design
The study has a three-armed single-blind randomized controlled design. After the enrollment, participants were randomized into AOMI-sleep (n = 15), AOMI-control (n = 15) or Control (n = 15) groups using a simple computer-generated sequence. An independent researcher assigned participants to training groups according to the randomization list in order to ensure the allocation concealment.All participants were asked to watch 20 min. video-clips in seated posture on a 15-inch computer screen, 4 days a week per 3 weeks. Participants allocated in AOMI-sleep and AOMI-control groups were asked to watch video-clips representing transitive daily tasks performed with the right upper limb and requiring advanced manual skills (Supplementary material 