Eeg And: Sleep Physiology Ppt

Awake & Alert vs. Relaxed Content: | Rhythm | Frequency | Amplitude | State | |--------|-----------|-----------|-------| | Beta (β) | 13–30 Hz | Low | Active concentration, anxiety, eyes open | | Alpha (α) | 8–13 Hz | Moderate | Quiet wakefulness, eyes closed, relaxed | | Gamma (γ) | 30–100 Hz | Very low | Cross-modal sensory processing, cognition |

| Rhythm | Frequency | State | | :--- | :--- | :--- | | Beta | 13-30 Hz | Awake, alert, anxious | | Alpha | 8-13 Hz | Awake, relaxed, eyes closed | | Theta | 4-8 Hz | Light sleep (N1), drowsiness | | Delta | 0.5-4 Hz | Deep sleep (N3), regeneration | eeg and sleep physiology ppt

Also known as Slow Wave Sleep (SWS). Dominated by high-amplitude, low-frequency Delta waves National Institutes of Health (.gov) 3. REM (Rapid Eye Movement) Sleep Awake & Alert vs