第十六章　睡眠：为什么你睡觉不会从床上掉下来
[1]　1989年……一项……实验：‘Sleep Deprivation in the Rat', Sleep 12, no. 1 (1989).
[2] 有高血压早期症状的人：Nature, 23 May 2013, p. S7.
[3] 如果睡眠没有：Scienti?c American, Oct. 2015, p. 42.
[4]　哪怕像线虫和果蝇这样简单的生物：New Scientist, 2 Feb. 2013, pp. 38-39.
[5]　阿塞林斯基头一个晚上的受试者：‘The Stubborn Scientist Who Unraveled a Mystery of the Night', Smithsonian, Sept. 2003; ‘Rapid Eye Movement Sleep: Regulation and Function', Journal of Clinical Sleep Medicine, 15 June 2013.
[6] 前两个阶段的睡眠很浅：Martin, Counting Sheep, p. 98.