Sleep, Circadian Rhythm, and Brain Health
摘要
Sleep is a complex biobehavioral condition marked by shifts in brain electrical patterns, resulting in modified consciousness, diminished sensory perception, and decreased muscle activity. It is a biological process that regulates a wide array of physiological and behavioral functions in nearly all living organisms. Sleep, a reversible behavioral state characterized by reduced responsiveness to external stimuli, plays a vital role in cognitive performance, metabolic homeostasis, immune function, and overall health (Lane et al. 2023). Circadian rhythms, on the other hand, are endogenous ~24-hour cycles driven by an internal clock principally located in the suprachiasmatic nucleus (SCN) of the hypothalamus that synchronizes physiological processes to the external light–dark cycle.