August 27, 2014 | Rohan

It's nice to conjure up happy memories of places I visited as a child. I don't think anyone can tamper with these memories, but if I were a lab mouse I wouldn't be so sure.

Researchers at MIT have successfully manipulated the emotional memories mice have of different places. Some people may find the idea of replacing negative memories with positive ones appealing. But don't our memories make us who we are?

The procedure is unlikely to be carried out on humans. It does make me wonder though...

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Researchers used optogenetic switches, which control neurons (brain cells) with coloured light.

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Image: Wikimedia Commons

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