闭眼之后就避免了眨眼调控的需要，使神经系统能够进入睡眠状态。
扩展讲，有些人有梦游(Sleepwalking/somnambulism/noctambulism)这样的异常睡眠状态。梦游期间一般会保持睁眼。这样的情况下由于以上因素导致神经系统的紊乱和高唤醒水平，其人不会有好的睡眠质量[8]。
End.
---------
[1] Standring, Susan. "Gray’s anatomy." The anatomical basis of clinical practice 39 (2008).
[2] Holly, F. J., and M. A. Lemp. "Tear physiology and dry eyes." Survey of ophthalmology 22.2 (1977): 69-87.
[3] Accornero, N., et al. "Corneal reflex elicited by electrical stimulation of the human cornea." Neurology 30.7 (1980): 782-782.
[4] Hattar, Samer, et al. "Melanopsin-containing retinal ganglion cells: architecture, projections, and intrinsic photosensitivity." Science 295.5557 (2002): 1065-1070.
[5] Schmidt, Tiffany M., Shih-Kuo Chen, and Samer Hattar. "Intrinsically photosensitive retinal ganglion cells: many subtypes, diverse functions."Trends in neurosciences 34.11 (2011): 572-580.
[6] Qiu, Xudong, et al. "Induction of photosensitivity by heterologous expression of melanopsin."Nature 433.7027 (2005): 745-749.
[7] TSUBOTA, KAZUO, et al. "Functional MRI of brain activation by eye blinking." Experimental eye research 69.1 (1999): 1-7.
[8] Guilleminault, Christian, et al. "Sleepwalking, a disorder of NREM sleep instability." Sleep medicine 7.2 (2006): 163-170.
窥视卡
雷达卡
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
千斤顶
照妖镜
