There are state-related differences in respiratory control between the sleep and wake states and between the five stages of sleep, most predominantly between stages 1 through 4 non-rapid eye movement
(NREM) and rapid eye movement (REM) sleep.
Normal sleep, during which brain activity remains high, is made up of non-rapid eye movement
(NREM) sleep and rapid eye movement (REM) sleep.
Originating in most cases from non-rapid eye movement
The first three stages of sleep are classed into non-rapid eye movement
sleep and the final stage is classed as rapid eye movement (REM), where most healing and replenishment occurs.
Slow wave sleep (SWS), one of the deeper stages of sleep, is characterized by non-rapid eye movement
(non-REM) from which it's difficult to awaken.
Mammalian sleep is classically divided in two phases, including non-rapid eye movement
(NREM) sleep or "light" sleep, and REM (or paradoxical) sleep or "deep"/dreaming sleep.
The stages of normal sleep are measure by the voltage of electrical impulses and split into two distinct states: non-rapid eye movement
(NREM) sleep and REM sleep.
More specifically, rocking increased the duration of stage N2 sleep, a form of non-rapid eye movement
sleep that normally occupies about half of a good night's sleep.
Although the exact function of non-Rapid Eye Movement
(NREM) sleep, and in particular SWS, is a topic of debate, it is thought to reflect sleep need and quality; thus any disruption to this may affect the underlying restorative properties of sleep and be detrimental to daytime functioning.
Night terrors, on the other hand, occur only in non-rapid eye movement
sleep (NREM) - but more of those later.
In general sexsomnia features are the following: Originating in most cases from non-rapid eye movement
sleep, occurs any time during sleep, wide spread autonomic activation, sexual arousal frequently present, duration possibly exceeding 30 minutes, exceptional violence or injurious behavior, exceptionally walking out of bed, predominantly in adults.
Studies show that gaboxadol decreases the amount of time to sleep onset; increases the amount of non-rapid eye movement
sleep (nonREM sleep) especially the delta stage of sleep; and it has no effect on the amount of REM sleep.