The effect of sleep upon human circadian rhythms.

摘要: Subjects who slept for 4 h from 0000, and a second variously distributed over the day, have provided values rectal temperature urinary excretion of water, potassium, sodium, chloride, phosphate, creatinine, calcium urate in sleeping subject at all hours 24. These are compared with similar wakeful subject. Temperature was lower during sleep except 1000 1200, difference maximal shortly before 0000. At potassium phosphate higher sleep. Cosinor analysis different variables is that subjects following nycthemeral habits, interaction between endogenous rhythms external influences such as discussed. The phasing essentially normal by end observations. By contrast irregular mimicking habits an air pilot free-running rhythm unrelated to emerged. When he finally living again on time his acrophases had moved middle night. Phosphate largely exogenous, falling consistently when rose after 8 h, but not