Scientists can alter and delete memories in mice. Now they say they’re decades away from doing the same in humans. It all began five years ago at MIT when Boston University Neuroscientist Steve Ramirez and his partner Xu Liu found a way to implant a false memory in a mouse’s brain. In their study, mice reacted in fear to a stimulus, even though they had never encountered it before — all thanks
to a manufactured implanted memory. Today, Ramirez and his colleagues are learning how to replace negative memories in mice with positive ones. Positive memories are created by putting male mice in a cage with female mice, while negative memories are created by putting the mice in a cage rigged with electrical shocks. READ MORE
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