sleep cycle

…of two phases in the sleep cycle, considered the restful or quiet sleep phase. The other phase of the human sleep cycle is known as rapid eye movement (REM) sleep. A single sleep cycle, with both NREM and REM phases, lasts about 90 to 110 minutes; most adults complete the…

…of two phases in the sleep cycle, in which a person experiences dreams, atonia (reduced muscle tone), irregular closed eye movements, and elevated levels of brain activity. The other phase of the human sleep cycle is known as non-rapid eye movement (NREM) sleep. A single sleep cycle, with both NREM…

…plays an essential role in sleep-wake regulation and arousal. As a result, thalamic pathology has been implicated in coma and related disorders of consciousness, such as vegetative and minimally conscious states, where deep brain stimulation has been tested therapeutically. The thalamus plays an important role in generating normal sleep thalamocortical…