Advances in researches on mechanism of lasting memory

Most of our experiences will be forgotten;emotional arousal enhances the storage of memories and can serve to create, selectively, lasting memories of our important experiences.The neural system mediated emotional arousal and memory are very closely linked.The stress hormones epinephrine and corticosterone released by emotional arousal regulate long-term memory.The amygdala plays a critical role in mediating the influences of these stress hormones.The stress-induced activation of the amygdala and its interactions with other brain regions involved in processing memory play a critical role in ensuring that emotionally significant experiences are well-remembered.In this article, the effect of the amygdala and emotional arousal during memory lasting retention is reviewed.