The Process of Occurrence and Recovery of Psychologicaland Physiological Fatigue by Sleep Deprivation for Fifty Hours in Man

Abstract

The experiment of 50 hours sleep deprivation for 4 males aged 21 to 22 years was performedfor a week including one adaptation day, two baseiine days, and two recovery days, the loadduring all the awakening times being mah-jong. Physioiogical parameters, performance, andquestionnairs were studied. During the sleep deprivation, the sequence of the occurrence of large change for the parameters was found to be the order of subjective fatigue feelings, theperformance (optical choice reaction time and critical flicker fusion frequency), and heart rateThe influence to the sleep showed that the slow wave sleep and REM sleep played theimportant role in the first and the second recoveryday, respectively.