Eeg And Sleep Physiology Ppt -

: Discuss how EEG patterns help diagnose conditions like Sleep Apnea , Narcolepsy , and Insomnia .

The keeps the cortex alert. It relies on neurotransmitters like acetylcholine, norepinephrine, serotonin, histamine, and dopamine. Orexin (hypocretin) neurons in the lateral hypothalamus act as a master switch to stabilize this awake state. The Sleep Promoting System eeg and sleep physiology ppt

Dominated by high-amplitude (>75 microvolts), low-frequency (0.5–2 Hz) delta waves. These waves must cover more than 20% of a 30-second epoch. EOG: Little to no eye movement. EMG: Very low muscle tone. Stage R (REM / Dreaming Sleep) : Discuss how EEG patterns help diagnose conditions

Sleep is not merely an off-state of the brain but a dynamic, highly regulated physiological process essential for cognitive function, physical restoration, and overall health. While the average person sleeps for roughly a third of their life, the mechanisms governing this state have remained a profound mystery for much of modern science. We now understand that sleep disorders and insufficient rest are linked to an increased risk of cardiovascular disease, obesity, diabetes, and neurodegenerative diseases like dementia. To truly understand sleep, we must observe the electrical language of the brain, primarily through the . Orexin (hypocretin) neurons in the lateral hypothalamus act

: Sleep is an active, regulated state of unconsciousness where the brain is primarily reactive to internal stimuli.

Understanding these cycles requires analyzing the interaction between central neural networks and peripheral systems. This comprehensive guide serves as an educational framework, ideal for constructing a professional presentation (PPT) on Electroencephalography (EEG) and sleep physiology. The Role of EEG in Sleep Medicine