PSYC 208 Lecture Notes - Lecture 3: Angina Pectoris, Lightdark, Sleep Deprivation
Document Summary
Psyc 208 lecture 3: physiology of sleep and its. Neurotransmitters, neuromodulators (can enhance the neurotransmitter in the synapse or slow it down) hormones. Zeitgeber internal and external cues that influences biological rhythms (light, physical activity) melatonin. Reticular activating system -- ras (sleep major player) Sensory nerve pathways meet, talk to relay neurons which talk to cortex. Level of disturbance it takes to wake you. Connects 2 sides of cerebellum, controls autonomic function. Important for rem motor paralysis/atonia: inhibition of spinal alpha- motorneurons (neurons which activate the skeletal and muscular systems), skeletal muscle activity is quiet. Continue functioning smooth muscle diaphragm, intestines/stomach. Biological clock, internal clock tells body what time it is and when to do what. Bilateral clusters, at midline at base of the brain, above where optic nerves cross (can obtain info from the eyes) Location of the biological clock alternates wake and sleep in 24hr cycles (cs.
