A typical full-term neonate usually enters into sleep in which state?

In a typical full-term neonate, sleep generally begins in the REM state. This is significant because infants spend a considerable amount of their sleep time in REM, which may be crucial for cognitive development and brain maturation. During REM sleep, the brain is very active, which is believed to play a role in processing experiences and learning.

Neonates have a unique sleep pattern compared to older children and adults, who often transition from lighter non-REM stages into deeper sleep before entering REM. The prominence of REM sleep in the sleep architecture of neonates aligns with their developmental needs, as this stage facilitates essential neurological and physiological functions.

Therefore, when considering the sleep initiation state of a typical full-term neonate, the REM state is the correct choice due to its critical role in early brain development and overall sleep patterns observed in newborns.