Stressing memory

摘要

The emotional arousal associated with a class of stress hormones may be required to form long-term memories, say Benno Roozendaal at the University of Groningen in the Netherlands, Marcelo Wood at the University of California, Irvine, and their colleagues.rnThe authors gave glucocorticoid hormones to rats and mice and tested how well the animals remembered objects and their locations. They found that the hormonesrnimproved memory by boosting acetylation, the addition of acetyl groups to nuclear targets.