Monday, December 28, 2009

Scientists Perfect Thought-to-Speech Algorithm

Scientists implanted electrodes inside the speech motor cortex of a paralyzed 26 year old's brain, allowing him to speak via electronic assistance.

Previous direct brain communication technology has focused on typing individual letters. The new technique translates the sounds of speech directly, allowing patients to merely think of saying the word and the computer translating it with a latency of 50ms, a speed on par with a healthy human being.

Signals collected from an electrode in the speech motor cortex are amplified and sent wirelessly across the scalp as FM radio signals. The Neuralynx System amplifies, converts, and sorts the signals. The neural decoder then translates the signals into speech commands for the speech synthesizer. Credit: Guenther, et al.

This technology is being developed by Frank Guenther of the Department of Cognitive and Neural Systems and the Sargent College of Health and Rehabilitation Sciences at Boston University, as well as many more academics and firms

[PhysOrg via Gizmodo]

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