How are sleep stages in a term newborn infant characterized?

In term newborn infants, sleep stages are primarily characterized by rapid onset active sleep. This stage is reminiscent of REM sleep in adults and can be observed shortly after the onset of sleep in newborns. Unlike adults, who transition through sleep stages in a more gradual manner, infants can switch rapidly between active sleep and quiet sleep.

The breathing, movements, and brain activity patterns during active sleep can be quite pronounced, exhibiting characteristic physiological features. Understanding this rapid transition is crucial for monitoring and assessing sleep patterns in newborns, as it reflects their developmental state and overall neurophysiological health.

Recognizing that active sleep is a normal and expected state in newborns helps caregivers and healthcare providers better differentiate between healthy sleep patterns and potential abnormalities.