Activities of Daily Living|Animals|Arm|Decision Making|Differential Threshold|Feedback, Psychological|Functional Laterality|Hand|Hemiplegia|Humans|Learning|Models, Neurological|Motion Therapy, Continuous Passive|Motivation|Motor Activity|Motor Skills|Nerve Net|Neuronal Plasticity|Nonlinear Dynamics|Practice (Psychology)|Recovery of Function|Reinforcement (Psychology)|Stroke|Stroke Rehabilitation