Synchronizers of Circadian Rhythms

Abstract

The adjustment of internal clocks by using external environmental cues, such as light, food, and physical activity, is an important function in the circadian clock system for maintaining an appropriate clock time. This function is referred to as “entrainment.” In this chapter, the entrainment systems in the central and peripheral clocks are introduced with their molecular mechanisms. The interaction between the synchronizers and physiological functions is also explained in each section to understand the importance of the timing of each synchronizer.