人在麻醉状态下能做梦吗?

凯特问克里斯这个问题……

克里斯:几乎可以肯定不是。原因是，当你进入所谓的生理正常睡眠时，这是一个非常有组织的大脑活动过程。当你经历一个叫做REM(快速眼动)睡眠的阶段时，就会做梦，你可以看到这种情况发生在某人身上，因为如果你观察他们睡觉的时候。你会看到他们的眼皮在闪烁，因为他们的眼球在眼皮下面移动。如果你在别人做这些事情的时候叫醒他们，问他们你还记得什么吗，你还记得什么吗，他们几乎会压倒性地说“我只是在做梦”。随着睡眠时间的推移，你的梦会变得越来越长，越来越详细，你往往会在晚上睡眠结束时做最好、最丰富、最难忘、最令人难忘的梦。我们不知道梦有什么作用，但它们对心理健康非常重要。如果你剥夺了人们宁静的睡眠和有梦的睡眠，那么他们第二天就不会觉得休息好了，他们不记得事情，他们不能形成新的记忆，诸如此类的事情。所以它可能有某种大脑清洁或记忆巩固的作用。但是当你用麻醉剂让人入睡时，麻醉剂会破坏神经细胞的膜，使神经细胞变得不那么活跃。 They increase the activity of inhibitory nerve signals in the brain and they decrease the excitation in the brain and, as a result, they basically just shut down your brain for the most part. There are some that work slightly differently but that's the general process. And so all they do is just turn you into an unconscious individual with very low levels of brain activity, not this organised pattern of dream activity, so you do not dream when you're under an anaesthetic, although, when you're waking up, you may have some bizarre experiences because your brain is just beginning to kick-in and return to consciousness. And so some people do describe some rather strange memories as they wake up from an anaesthetic, but that's not when they were actually anaesthetised.