When performing simple tasks like pushing elevator buttons or picking up a cup, the brain actually has a mini-debate as to which hand should do the jobs. Now magnetic stimulation will make sure the brain always chooses the left hand.
Researchers found they could influence the decision about what hand to use in simple tasks using transcranial magnetic stimulation (TMS). The finding could have medical applications in assisting patients who have lost or damaged limbs. It may also suggest the possibility to manipulate other decisions using TMS.