...入睡 睡觉过程（文献中一般用process S表示）主要是位于下丘脑视前区（preoptic area）的神经元关闭了唤醒系统（arousal system），使得人可以入睡。如果这些神经元缺失，就会导致失眠。
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reticular arousal system 网状觉醒系统
The range through these states is mediated by the arousal system, a network of tracts converging from sensory systems to integrating centers in the brain stem.
这些状态的变化是以激发系统作为媒介完成的，而所谓激发系统，是指从各个感觉系统汇聚到位于脑干中整合中心的一个网络。
It also points to specific changes in the brain's arousal system, in the regions that process emotion, and intensification of negative emotions.
它引起脑兴奋系统(该区域处理情绪，并加强负性情绪反应)的改变。
They chose the patient because they believed the arousal system in his thalamus was damaged, but that key areas of the cerebral cortex were undamaged.
医生们选择这个病人，是因为他们相信这个病人的丘脑复苏系统受到了损伤，而大脑皮层的关键区域还是完好的。
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