Sharp, biphasic waves with a negative upward deflection followed by a positive downward deflection, lasting at least 0.5 seconds. Stage N3 (Deep / Slow-Wave Sleep)
To track horizontal and vertical eye movements, critical for identifying REM sleep. eeg and sleep physiology ppt
Characterized by rapid eye movements, muscle atonia (paralysis), and vivid dreaming. 3. Physiological Regulation of Sleep Sleep is governed by the Two-Process Model Process S (Sleep Homeostasis): Sharp, biphasic waves with a negative upward deflection
Characterized by Sleep-Onset REM Periods (SOREMPs). Instead of progressing orderly from N1 to N2 to N3, narcoleptic patients often plunge directly into REM sleep within minutes of falling asleep. Structure Outline for Your "EEG and Sleep Physiology" PPT Structure Outline for Your "EEG and Sleep Physiology"
| Feature | NREM (N3) | REM | | :--- | :--- | :--- | | EEG | High Amp, Slow (Delta) | Low Amp, Fast (Mixed) | | HR/BP | Low & Stable | Variable, Bursting | | Breathing | Regular | Irregular | | Muscle Tone | Normal | Absent (Atonia) | | Dreams | Vague, thought-like | Vivid, narrative |
Key features that make these presentations effective include:
Rapid eye movements on EOG and flat-line muscle activity on EMG. 5. Visualizing the Night: The Hypnogram