New Insights into Circadian Rhythms

Suprachiasmaticus nucleus (SCN) clock also known as body's master timekeeper located in the hypothalamus is not necessary to align body rhythms with the light-dark cycle, reveals new research. This challenges and disproves the commonly held notion that circadian rhythms were strictly organized in a hierarchical manner, and that light resets the master clock in the SCN, which then coordinates the other, subordinate clocks in peripheral tissues. Several metabolic and psychiatric ...