现代人失眠者很多。美国心理学家彼得豪利认为,人的睡眠和觉醒很可能由两个神经系统分别控制,即睡眠系统和醒觉系统。当睡意袭来时,醒觉系统的功能减弱,睡眠系统的功能增强。失眠患者就是因为紧张而使醒觉系统过分活跃。身体不适也能引起失眠,如关节痛、心绞 Many modern insomnia. According to the American psychologist Peter Howley, people’s sleep and wakefulness are likely to be controlled by two nervous systems, namely, the sleep system and the awake system. When drowsiness attacks, the function of wake system weakens, and the function of the sleep system strengthens. Insomnia is awakening system because people are over-active. Physical discomfort can also cause insomnia, such as joint pain, heart and heart