PSYC-1000 Lecture Notes - Lecture 9: Motor Cortex, Heart Rate, Night Terror
13 Sep 2018
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The science of sleep and dreaming: 1/3 of your life is spend asleep, 100,000 dreams (totaling 6 years) - in your lifetime, the dual-track mind is active even during sleep. Sleep stages and sleep cycles - what is measured: changes in state of consciousness - bodily correlates: Ans arousal measures: respiration, blood pressure, temperature, blood flow to genitals. Brain scans: pet; cat; fmri: alpha waves are the relatively slow brain waves of a relaxed, awake state. Dreams occurred during periods of wild brain activity and rapid eye movements. What happens during rem sleep: heart rate rises and breathing becomes rapid, "sleep paralysis" occurs when the brainstem blocks the motor cortex"s messages a(cid:374)d the (cid:373)uscles do(cid:374)"t (cid:373)o(cid:448)e. this is so(cid:373)eti(cid:373)es k(cid:374)o(cid:449)(cid:374) as. "paradoxical sleep" ; the brain is active but the body is immobile. Association areas of cortex: brain - suppressed, motor activity (at the brainstem.
