Brain implants turn imagined handwriting into text on a screen

Electrodes in a paralyzed man’s brain turned his imagined handwriting into words typed on a screen. The translation from brain to text may ultimately point to ways to help people with disabilities like paralysis communicate using just their thoughts.

A 65-year-old man had two grids of tiny electrodes implanted on the surface of his brain. The electrodes read electrical activity in the part of the brain that controls hand and finger movements. Although the man was paralyzed from the neck down, he imagined writing letters softly with his hand. With an algorithm, researchers then figured out the neural patterns that went with each imagined letter and transformed those patterns

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