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When a brain injury impairs memory, a pulse of electricity may help

03:55
A precisely timed pulse to a brain area just behind the ear can help reduce memory deficits in patients suffering moderate to severe traumatic brain injuries. (Getty Images/fStop)
A precisely timed pulse to a brain area just behind the ear can help reduce memory deficits in patients suffering moderate to severe traumatic brain injuries. (Getty Images/fStop)

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