Circadian rhythms are the cycles that tell the body when to sleep, wake, and eat—the biological ... by a master clock, a group of neurons called the suprachiasmatic nucleus, located in a region ...

1) has enabled cellular-level analysis of a structure in the hypothalamus of the mammalian brain, called the suprachiasmatic nucleus (SCN). The SCN contains a 'daily clock' that generates near-24 ...