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'Sharp' older brains are not the same as younger brains

ptic communications, the older rats whose memories remained sharp still had that capacity. Interestingly enough, the successful older rats also relied far less than did younger rats on a synaptic receptor that is linked to a common mechanism for storing memories, the team learned.

"Instead, successful agers relied more than young rats on a different mechanism for bringing about synaptic change," Gallagher said. "This 'switch' could serve the same purpose ?storing memories ?but through a different neurochemical device."


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Source:Johns Hopkins University


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