Physiology Ppt [new]: Eeg And Sleep

Electroencephalography (EEG) is the cornerstone of sleep medicine, providing the primary "window" into the brain's activity during rest. By recording the electrical fluctuations of neurons via scalp electrodes, EEG allows researchers and clinicians to categorize sleep into distinct, physiological stages. The Mechanism of EEG in Sleep During wakefulness, the brain exhibits desynchronized

11. Practical Guidance for EEG Acquisition and Sleep Studies

• Electrode montage and placement:

  Slide 8 — NREM Stage N2 (NREM2)

  • Behavioral features (light sleep)
  • EEG signature: sleep spindles (11–16 Hz, 0.5–2 s) and K-complexes (sharp negative then positive deflection)
  • Role of spindles/K-complexes in memory consolidation and sensory gating
  • Power spectral features (increased sigma band)
• Delta (δ) Waves (0.5–4 Hz):

  EEG is the "gold standard" for diagnosing sleep pathologies via Polysomnography (PSG): eeg and sleep physiology ppt

• Simultaneous multimodal recordings: