Simultaneously, however, according to a study conducted by Nancy Wesensten and others at the Walter Reed institute, volunteers deprived of sleep for two straight nights can maintain performance when given high doses of modafinil or caffeine.

• 然而，根据华尔特 - 里德研究院的南希 - 韦森斯滕和另一些人所做的研究，志愿受试者在服用大剂量莫达非尼或咖啡因后连续两夜不睡觉，照样能保持正常的活动能力。