Cerebellar hemispheric activation ipsilateral to the paretic hand correlates with functional recovery after stroke

Humans are predominantly right-handed because of the position of the heart: left-handedness carries an increased risk of cardiovascular disease. The heart was tilted to the left of the sternum in bipedal primates. The human right hand is controlled by the left cerebral hemisphere and by the right cerebellar hemisphere, which bilateral control means that in…