Eeg And Sleep Physiology Ppt ((exclusive))

Dominated by alpha rhythm (8–12 Hz) in the occipital channels when eyes are closed. If eyes are open, the EEG shows low-voltage, mixed-frequency beta activity (13–30 Hz).

Often called "paradoxical sleep" because the brain is highly active while the body is completely paralyzed (muscle atonia) to prevent acting out dreams. This stage is critical for emotional regulation and memory consolidation. eeg and sleep physiology ppt

High during wakefulness, lower in NREM, and virtually silent during REM. Dominated by alpha rhythm (8–12 Hz) in the

EEG and sleep physiology represent the cornerstone of modern somnology. This guide provides a structured breakdown of the essential concepts, data, and visual components required for a professional "EEG and Sleep Physiology" presentation. 1. Introduction to Polysomnography (PSG) This stage is critical for emotional regulation and

Occipital alpha waves are replaced by low-amplitude, mixed-frequency (LAMF) activity covering 4–7 Hz (theta range).

Alpha attenuation (the alpha rhythm drops to less than 50% of the epoch). It is replaced by Low-Amplitude, Mixed-Frequency (LAMF) activity, primarily in the theta range (4–7 Hz). Vertex sharp waves appear near the end of N1.

An internal 24-hour clock regulated by the suprachiasmatic nucleus (SCN) in the hypothalamus. It responds to light and dark cues to regulate the timing of sleepiness and wakefulness.