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Massachusetts Institute of Technology
Using light, scientists make bad memories good in mice
Using light, scientists make bad memories good in mice

Can a bad memory be turned into a good one? Scientists say they’ve been able to do just that in a group of mice by activating certain parts of their brain with light. The findings in the journal Nature show that memories can potentially be modified without drugs or extra training -- simply, if that’s the word, by breaking the memory into its components in the brain and rewiring the faulty connection. You might think of memory as something fixed, a historical recording that's as unchangeable as the past. That’s far from reality, senior author Susumu Tonegawa of the Massachusetts Institute of Technology said in a news briefing. “Recording memory is not like...

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