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Physiology of Sleep. Ahmad Bamagoos MBBS/ M.Sc. Objectives. Function of sleep Regulation of sleep Physiological changes during sleep. Sleep. A reversible behavioral quiescence that is typically accompanied by recumbent posture and irresponsiveness to external stimuli. Function of Sleep.
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Physiology of Sleep Ahmad BamagoosMBBS/M.Sc
Objectives • Function of sleep • Regulation of sleep • Physiological changes during sleep
Sleep • A reversible behavioral quiescence that is typically accompanied by recumbent posture and irresponsiveness to external stimuli
Function of Sleep • Survival • Energy conservation • Restoration • Memory consolidation
Arousal System Thalamus Basal forebrain Reticular Formation ARAS
Arousal System - Inhibition Thalamus Basal forebrain VLPO Reticular Formation ARAS
Sleep - Wake Regulation • Circadian drive • Homeostatic drive • Adaptive drive
Sleep - Wake Regulation • Circadian drive - When to sleep - Controlled by circadian rhythm - Circadian clock
Circadian SystemAnatomy & Physiology VLPO Hypothalamus Optic Chiasm SCN Pituitary Gland
Sleep - Wake Regulation • Homeostatic drive - How much sleep - Homeostasis is .. - Sleep-Wake Homeostasis is .. - Hypnotoxins
Sleep - Wake Regulation Homeostatic Drive Circadian Drive 9 am 9 pm Asleep
Sleep - Wake Regulation • Adaptive drive - Psychological factors - Environmental factors - Physical factors
States of Sleep • REM state • nREM state