Presentation Title: EEG and Sleep Physiology Slide 1: Title Slide Title: Electroencephalography (EEG) and Sleep Physiology Subtitle: Understanding Brain Waves and the Architecture of Sleep Presenter Name: [Your Name] Date: [Date]
Slide 2: Introduction to the Electroencephalogram (EEG) Definition:
EEG is a non-invasive electrophysiological monitoring method to record electrical activity of the brain. Measures voltage fluctuations resulting from ionic current flows within the neurons of the brain.
Clinical Relevance:
Neurology: Diagnosing epilepsy, seizure disorders, and encephalopathies. Sleep Medicine: Staging sleep and diagnosing sleep disorders (e.g., insomnia, narcolepsy). Anesthesia: Monitoring depth of anesthesia during surgery.
Slide 3: The Physiology of Brain Waves Neural Basis:
Brain waves represent the summation of postsynaptic potentials (EPSPs and IPSPs) from large groups of pyramidal neurons. Synchronization vs. Desynchronization: eeg and sleep physiology ppt
Synchronization: Large groups of neurons fire in unison (produces high amplitude, low frequency waves—seen in sleep). Desynchronization: Neurons fire independently (produces low amplitude, high frequency waves—seen in alertness).
Slide 4: EEG Frequency Bands (The "Rhythms")
Beta (β) Waves (13–30 Hz):
High frequency, low amplitude. Associated with active thinking, focus, and alert wakefulness.
Alpha (α) Waves (8–13 Hz):