Tag: deep sleep

December 1, 2025 / Mohammed looti

SLEEP STAGES

Introduction to Sleep Architecture The progression through the sleep cycle is a highly organized, dynamic process defined by distinct patterns of electrical brain activity. This progression, fundamental to understanding restorative rest, is categorized into two primary states: Non-Rapid Eye Movement (NREM) sleep and Rapid Eye Movement (REM) sleep. NREM sleep is further subdivided into three […]

November 18, 2025 / Mohammed looti

DEEP SLEEP

Introduction to Deep Sleep and Slow-Wave Sleep (SWS) Deep sleep, formally designated as Stage N3 of non-rapid eye movement (NREM) sleep, represents the deepest and most restorative phase of the human sleep cycle. This stage is critically defined by a high arousal threshold, meaning that significant external stimuli are required to awaken the individual. Historically, […]