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Page last updated at 08:32 GMT, Wednesday, 1 February 2012

Is this what thoughts sound like?


Scientists believe the first step has been taken towards hearing imagined speech using a form of electronic telepathy.

They hope that, in the future, it may be possible to "decode" the thoughts of brain-damaged patients who cannot speak.

Bob Knight, professor of psychology and neuroscience at the University of California, explains how it works.

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