The author studied the effects of Partial Differential REM Deprivation(PDRD) on the sleep structure, sleepiness and fatigue with polysomnography and visual analogue test. The subject were 9 healthy male students, ranging in age from 20 to 25 years wit...
The author studied the effects of Partial Differential REM Deprivation(PDRD) on the sleep structure, sleepiness and fatigue with polysomnography and visual analogue test. The subject were 9 healthy male students, ranging in age from 20 to 25 years without personal histories of medical, neurological, or psychiatric illness and current sleep disturbance or parasomnias.
Sleep records were analyzed according to the criteria of Rechtschaffen and Kales's manual.
The results were as follows.
1. Stage 1 sleep(%) decreased significantly during the PDRD and recovery period. Stage 2 sleep (%) also significantly decreased during the PDRD nights, and there was no significant difference between the baseline and recovery period in both of stage 1 sleep(%) and stage 2 sleep(%).
2. Slow wave sleep(%o) significantly increased during the PDRD period, and there was no difference in the recovery period. Between slow wave sleep(%) in the PDRD and recovery period, there was significantly decreased in the recovery period.
3. REM sleep(min) of PDRD periods significantly decreased, and there was no significant difference between the baseline and recovery period, but REM(%) significantly increased in the recovery period(REM rebound) compared with baseline.
4. There was no correlation between the increase rate of REM % in the baseline and that of recovery nights, and also no correlation was observed between the decrease rate of REM % in the PDRD nights and the increase rate of REM % in the recovery nights.
5. Sleepiness was prominent in the PDRD nights and significantly recovered in the recovery nights, Fatigue was also prominent in the PDRD nights and significantly recovered in the recovery nights.