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Drug Selectively Removes Rats' Memory 64

rednuhter writes "Nature online is reporting scientists have used drugs to selectively remove one memory while not affecting another. Musical tones were played to the rats and at the same time the subjects were given a mild electric shock. Half the study group were given the drug (not approved for use in humans) and then the experiment was repeated with a new tone. The following day the rats that had not been given the treatment were afraid of both tones while the treated half were only afraid of the second tone: the memory of fear of the first had been erased."

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