The endogenous circadian rhythms of melatonin, cortisol, DHEA, and core body temperature are the markers of the human circadian pacemaker.

• 体内褪黑激素、皮质醇和脱氢异雄甾酮等激素的分泌及核心体温变化的生理节律是人体内在生理起博器的标志;