Transcranial magnetic stimulation can make you a leftie.

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.


Although most people are pretty clearly right- or left-handed when performing more complex tasks, like writing or handling sports equipment, almost everyone is ambidextrous when it comes to simple tasks. So in those cases, the brain’s parietal cortex is charged with assessing which hand makes more sense to perform a specific task. A new study by researchers at UC Berkeley reveals this is actually a competitive process between the two hands, and it’s actually possibly to disrupt the cortex’s decision-making with a little transcranial magnetic stimulation, or TMS.

Continue reading io9