The Appearance of REM Sleep Is Prevented by Noradrenaline From LC on PPT
Material below summarizes the article Noradrenaline from Locus Coeruleus Neurons Acts on Pedunculo-Pontine Neurons to Prevent REM Sleep and Induces Its Loss-Associated Effects in Rats, published on November 30, 2016, in eNeuro and authored by Mudasir Ahmad Khanday, Bindu I. Somarajan, Rachna Mehta, and Birendra Nath Mallick.
An important characteristic of living systems/organisms is that they undergo cyclical episodes of rest and activity, which in higher species has evolved into sleep and waking. Apparently, rest and activity are defined by physical movement; however, these stages are contiguous and gradually transform from one to another state, which differ in threshold of responsiveness to stimuli, levels of consciousness, cognition, and thinking ability. By and large, these states and their characteristics are subjective in nature.
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