Electrodes placed directly on the surface of peoples' brains allow them to type just by thinking of letters. Image credit: stockxpert.By focusing on images of letters, people with electrodes in their brains can type with just their minds, scientists now reveal.
These findings make up one more step on the road to mind-machine interfaces that may one day help people communicate with just their thoughts. Researchers have recently employed brain scans to see numbers and maybe even pull videos from inside people's heads.
The neuroscientists were monitoring two patients with epilepsy for seizure activity with electrodes placed directly on the surface of their brains to record electrical activity generated by the firing of nerve cells. This kind of procedure requires a craniotomy, a surgical incision into the skull.
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