Sleep Cycle alarm clock > About Sleep Circadian RhythmDid you ever notice that you feel sleepy around the same time every day? Constantly running in the background of your brain and body, the circadian rhythm is a built-in 24-hour clock. It guides your body as to when you should be ...
circadian resonanceSleep is a crucial and complex behavioral state that occupies one-third of an individual's life. A couple of theories have been proposed in relation to sleep. The first is the theory of dynamic stabilization, which explains the evolution of sleep. The second is the circadian...
circadian rhythmneurotransmitter systempsychosisschizophreniaSCRDsleep–wake cycleSleep is a complex physiological process involving the interaction of multiple neurotransmitter systems and a diverse network of both arousal and sleep-promoting brain nuclei. This chapter focuses primarily on schizophrenia and ...
cycle is the most obvious example of a circadian process, as it occurs with a consistent 24-h rhythm and can be shifted according to environmental cues. The body’s circadian clock system maintains these 24-h rhythms in physiological functions, including the sleep–wake cycle, and synchronizes...
Noun1.circadian rhythm- a daily cycle of activity observed in many living organisms biological time- the time of various biological processes Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
these stages throughout the night repeatedly, those are calledsleep cycles. These cycles usually last about 90 minutes, and most people go through four to six cycles each night. (1) Night after night, we go through the same sleep-wake cycle, which is regulated by ourcircadian rhythm. (1)...
Sleep is regulated by your circadian rhythm, or body clock, located in the brain.睡眠由脑内的昼夜节律或生理时钟所管理。The body clock responds to light cues, ramping up production of the hormone melatonin at night and switching it off when it senses light.生理时钟对光信号有所反应，在夜晚会...
Every cell in the body has a circadian rhythm. This rhythm follows a near 24-hour cycle that is synchronized to day and night. These circadian rhythms are critical for health and well-being.
Circadian rhythm An approximately 24-hour rhythm in cellular, physiological or behavioural processes that are driven by the internal circadian timekeeping system; this rhythm is sustained in the absence of environmental and behavioural rhythms and can be entrained to solar day/night cycle by light. Mo...
It is no wonder that in the course of evolution organisms came to display rhythmic behaviors with an approximately 24-hr cycle. The ancient Greeks noted that various plants open their leaves by day and close them by night. The initial view of such rhythmic activities was that they were ...