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.
sciencemag.org, 13 May 2021