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研究:各种痛苦记忆或可通过药物来消除

kira86 于2010-06-07发布 l 已有人浏览
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  The ability to erase painful memories has been seen on science fiction and Hollywood blockbusters for deca

  the ability to erase painful memories has been seen on science fiction and hollywood blockbusters for decades, but now forgetting an unhappy love affair or a traumatic accident could soon be as easy as popping a pill。

  scientists have discovered a drug that helps numb the pain of bad memories by flooding the mind with feelings of security and safety。

  to test the effectiveness of the drug, researchers created bad memories by giving mice electric shocks while a loud noise was played. over time, the creatures learned to associate the sound with the shock, and hearing the noise alone was enough to make them freeze. but when they were given a drug called brain-derived neurotrophic factor, or bdnf, they lost their fear。

  bdnf is naturally produced in the brain, and experiments showed that rats with a shortage of the compound struggled to overwrite bad memories. failure to overwrite fear is thought to contribute to many psychological problems。

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