monophasic sleep

Monophasic sleep is a sleep pattern characterized by a single, uninterrupted period of sleep within a 24-hour cycle. This contrasts with polyphasic sleep, where sleep is divided into multiple shorter periods throughout the day, as seen in infants. The shift from polyphasic to monophasic sleep typically occurs during development, influenced by maturation and cultural norms geared towards daytime activity and nighttime rest. While the exact physiological need for sleep is still being researched, adults generally require 7-9 hours of sleep per night. Sleep is not a passive state but involves distinct stages, primarily Non-Rapid Eye Movement (NREM) and Rapid Eye Movement (REM) sleep, each with unique brain activity patterns and potential functional roles.1234