美国罗切斯特大学医学中心一项研究表明,人们在睡觉时,清除大脑中废物的系统最活跃。这个启示可能改变科学家对睡眠生物目的的理解,指向治疗神经系统疾病的新方式。人为什么要睡觉?这个问题自古希腊以来,一直让哲学家和科学家着迷。从实际的角度来看,睡跟是一个令人费解的生物状态,特别是从果蝇到露脊鲸,几乎每一个动物物种都有睡眠的状态。可这个睡眠期有显著的缺点,睡着了似乎就失去了对周围环境的警觉,尤其对于食肉动 A study by the University of Rochester Medical Center shows that people are most active in clearing the brain’s waste when they sleep. This revelation may change scientists’ understanding of the purpose of sleeping biology and point to new ways of treating diseases of the nervous system. Why do people want to sleep? This question has fascinated philosophers and scientists since ancient Greece. From a practical point of view, sleep with a puzzled biological state, especially from fruit flies to right whales, almost every animal species have sleep state. This sleep period may have significant shortcomings, asleep seems to have lost the alertness of the surrounding environment, especially for carnivorous