Deep N3 sleep is highly concentrated in the first third of the night. Conversely, REM sleep periods grow progressively longer and more intense toward the morning hours.
Relaxed wakefulness with eyes closed (attenuates when eyes open). 4 – 7 Hz Drowsiness, light sleep, and deep relaxation. Delta ( ) 0.5 – 3.5 Hz Deep, slow-wave sleep; high amplitude ( 3. The Architecture of Sleep: Macro and Micro
Diagnosed by Sleep-Onset REM Periods (SOREMPs) occurring within 15 minutes of falling asleep.
Wake --------------------------------------- N1 __ __ N2 | |__ | |__ __ N3 __| | __| | | REM |__________| |__________| |_____ 0h 1.5h 3h 4.5h 6h Structural Overview eeg and sleep physiology ppt
Measures muscle tone, typically using electrodes placed on the chin, which is crucial for identifying the muscle atonia (paralysis) characteristic of REM sleep. 3. EEG Waveforms Found in Wakefulness and Sleep
Stage N1 – Drowsiness (Light Sleep) Content:
Sleep is divided into NREM (N1, N2, N3) and REM stages, each having distinct EEG markers. A. Wakefulness Deep N3 sleep is highly concentrated in the
Nasal pressure, airflow, and respiratory effort belts. 5. Detailed Breakdown of Sleep Stages Use this section for the core slides of your technical PPT. Wakefulness (W) Eyes Open: High-frequency, low-voltage Beta waves.
EEG in Sleep Medicine (Polysomnography – PSG) Content:
High-amplitude, low-frequency delta waves (>20% of the epoch). E. REM Sleep - Dream Sleep 4 – 7 Hz Drowsiness, light sleep, and deep relaxation
Active, alert, or anxious thinking.
This stage constitutes the highest percentage of total night sleep. It is defined by two signature EEG markers: