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.