Cort
Phoenix Rising Founder
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I wouldn't be surprised if this wasn't on the Japanese CFS groups. They got alot of hoo hoo but unfortunately they seem to be doing alot of very basic (ie simple) studies. Still they do highlight some interesting things.
This one shows that healthy people who are deprived of sleep can do the simple things afterwards but ask them to do some high level thinking and they are in trouble. Just think of what years of poor sleep can do to your cognitive centers if one bad night can cause healthy people to blow it on higher cognitive tests not for one but for two days afterwards.
Recovery of Cognitive Performance and Fatigue after One Night of Sleep Deprivation.
Ikegami K, Ogyu S, Arakomo Y, Suzuki K, Mafune K, Hiro H, Nagata S.
Department of Mental Health, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan.
This one shows that healthy people who are deprived of sleep can do the simple things afterwards but ask them to do some high level thinking and they are in trouble. Just think of what years of poor sleep can do to your cognitive centers if one bad night can cause healthy people to blow it on higher cognitive tests not for one but for two days afterwards.
Recovery of Cognitive Performance and Fatigue after One Night of Sleep Deprivation.
Ikegami K, Ogyu S, Arakomo Y, Suzuki K, Mafune K, Hiro H, Nagata S.
Department of Mental Health, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan.
The aim of this study was to investigate how subjective sleepiness, mood states, simple and high-order cognitive performance change after one night of sleep deprivation (SD) and recover to after 7 hours normal recovery sleep opportunity during three recovery days. Methods: Ten healthy subjects participated in this study. We measured their subjective sleepiness, mood states and their performances of 2 simple tasks and 4 high-order cognitive tasks twice a day for 5 days, on the baseline day, post-vigil day and 3 recovery days after SD.
The performances of simple tasks such as addition or short-term memory were not reduced after SD and were the poorest on the baseline day, and improved gradually; however the high-order cognitive performances were at their lowest on the post-vigil day and needed 2 recovery sleep opportunities to return to the baseline level. Fatigue and confusion in mood states and subjective sleepiness were also at their lowest after SD. Subjective sleepiness nearly recovered to the baseline level on the 1st recovery day, but fatigue and confusion reached the baseline levels on the 2nd recovery day.
Conclusion: These results suggest that cognitive deterioration and the recovery process may differ between simple task performance and high-order cognitive task performance, which needed 2 ordinary sleep opportunities to recover to the baseline level, and the change of subjective mood states were also different for each mood.