PSYC 100 Lecture Notes - Lecture 5: Theta Wave, Delta Wave, Pineal Gland
15 Mar 2016
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Document Summary
Consciousness- personal awareness of internal & external simuli. Controlled processes: require alert awareness, absorb limited atenion, and interfere with other ongoing aciviies. Automaic processes- occur with litle conscious awareness, require minimal atenion, & do not interfere with other aciviies. Alpha waves: 8-12 cps, relaxaion, meditaion. Delta waves: < 4 cps, deep sleep. Circadian rhythms: 24-hour biological cycle found in human & other species, brain regulaion of circadian rhythms. Suprachiasmaic nuclei (scn)- cells in reina send messages here, send signals to pineal gland to secrete melatonin; inacive at night. Pineal gland- secretes more melatonin at night with scn is inacive. Stage 1 theta waves (light, short sleep, bodily funcions decline- heart rate, breathing, body temp. , muscle tension) Stage 2 sleep spindle: brief burst of fast frequency waves caused by thalamus; allow you to stay asleep. Stage 3 & 4 delta waves (20%, 50%) Sleep deprivaion: complete deprivaion, parial deprivaion, rem deprivaion.
