Eeg And Sleep Physiology Ppt [best]

Academic/Professional Presentation Format: PowerPoint (PPT) Report

. These slow waves must occupy (6 seconds) of a 30-second epoch.

Visual graph charting the interaction between Process S (adenosine) and Process C (melatonin/SCN). eeg and sleep physiology ppt

High frequency, low amplitude; associated with wakefulness and REM sleep. Alpha Waves (8–13 Hz): Relaxed wakefulness with eyes closed. Theta Waves (4–8 Hz): Characteristic of light sleep (N1). Delta Waves (0.5–4 Hz): High amplitude; indicative of deep, slow-wave sleep (N3). 2. The Architecture of Sleep (Sleep Stages)

EEG measures the collective electrical activity of cortical neurons. In sleep studies, it transforms invisible neurological transitions into predictable, visual waveforms. The Biophysical Basis Delta Waves (0

(0.5–2 Hz). This is the period of physical restoration and hormonal regulation. REM Sleep:

Brief bursts of 11–16 Hz activity, crucial for memory consolidation. K-complexes: 4. Clinical Significance of Sleep EEG

: Prominent during drowsiness and light sleep (Stage N1).

A full night’s sleep consists of several 90-to-120-minute cycles, alternating between NREM (N1, N2, N3) and REM sleep. As the night progresses, the duration of N3 (deep sleep) decreases, while the duration of REM sleep increases. Dominated by N3 (deep delta waves). Late Night: Dominated by N2 and REM. 4. Clinical Significance of Sleep EEG