Page last updated at 22:00 GMT, Wednesday, 3 February 2010

Fergus Walsh tests scan technique


The BBC's Health Correspondent Fergus Walsh tests a new brain scanning technique scientists say allows some vegetative patients to communicate with simple 'yes' and 'no' answers.

The technique, called functional magnetic resonance imaging, detected signs of awareness in four out of 23 patients thought to be in a vegetative state.

The study was conducted by experts at the Medical Research Council, the Wolfson Brain Imaging Centre in Cambridge and the University of Liege in Belgium.


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