Issue Date: September 7, 2009
Neurochemical Net Traps Bad Memories
Traumatic memories are hard to shake and can become intrusive, leading to conditions such as anxiety and posttraumatic stress disorder. An international research team has now discovered a possible explanation for the lasting power of painful memories by taking a close chemical look at rat behavior (Science 2009, 325, 1258). As in humans, traumatic memories persist in adult rats. But in young rats, such memories can be erased. Andreas LÃ¼thi of Friedrich Miescher . . .
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