Paralyzed person types at record speed—by imagining handwriting


A new approach to brain-computer interface has allowed a paralyzed person to type with unprecedented speed, The Scientist reported yesterday. As Science first reported in 2019, researchers used electrodes implanted in a motor region of the brain to read out letters as a person paralyzed from the neck down imagined writing by hand. Previous systems, where users select on-screen letters by moving a cursor with their minds, have reached speeds up to about 40 characters per minute, but the new approach allowed speeds of up to 90 characters per minute with 94% accuracy, the researchers reported this week in Nature. Future improvements to the setup—such as making it smaller, wireless, and easier to calibrate—could ready it for wider clinical use., 13 May 2021