An article in the April issue of The Scientist examines how the body controls the sleep/wake cycle.
Much is now known about the brain’s “master clock.” But studies are showing that this circadian clock isn’t in complete control of sleep. Other molecular mechanisms can override its signals when we are forced to stay awake.
Thus sleep may have biological functions that are beyond the control of the circadian clock. “It is clear,” writes the author, “that there are many factors affecting sleep.”
Read the article to find out more.