Marcos G. Frank, a sleep researcher at Washington State University in Spokane, said that it could be hard to tell whether changes to the brain at night were caused by sleep or by the biological clock. “It’s a general problem in the field,” he said.
华盛顿州立大学斯波坎分校的睡眠问题研究者马科斯·G·弗兰克(Marcos G. Frank)说,很难判断大脑夜间的变化是由睡眠还是生物钟引起的。“这是该领域的一个普遍问题,”他说。
Markus H. Schmidt, of the Ohio Sleep Medicine Institute, said that while the brain might prune synapses during sleep, he questioned whether this was the main explanation for why sleep exists.
俄亥俄睡眠医学研究所(Ohio Sleep Medicine Institute)的马库斯·H·施密特(Markus H. Schmidt)说,虽然大脑可能在睡眠期间修剪突触,但他质疑这一点是否是睡眠存在的主要原因。
“The work is great,” he said of the new studies, “but the question is, is this a function of sleep or is it the function?”
“这项工作很好,”他谈起这项新研究时说,“但问题是,这是睡眠的功能之一,还是它的主要功能?”
Many organs, not just the brain, seem to function differently during sleep, Dr. Schmidt pointed out. The gut appears to make many new cells, for example.
不仅大脑,许多器官在睡眠时的功能似乎都不一样,施密特博士指出。比如肠道似乎就会产生许多新的细胞。
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