Scientists have successfully re-awoken coma patients so they can communicate with their family by ‘zapping’ their brain with a low-intensity current.

Two people in a vegetative state, and another 13 in a minimally-conscious coma, were able to show new signs of awareness after receiving brain stimulation, New Scientist reported.

The effect lasted for up to a week, according to researchers at the University of Liege in Belgium.

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