“Mental Typewriter,” a brain to computer interface which translates thoughts into cursor movements on a computer screen. The user has 128 electrodes placed on their scalp, and the EEG-like signals are decoded by a software program to identify specific information, like the choosing of letters in order to compose words and sentences. The neural analysis is time-consuming (a typical sentence would take 5 to 10 minutes to write) and the electrodes themselves take an hour to apply, but eventually researchers hope to make it possible for people with severe disabilities such as extensive paralysis, to communicate through computers.

Displayed at the CeBIT trade show in Germany

Brain-controlled device could help the disabled

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