PSYC 1010 Lecture : psych Chapter 5-8 lecture notes.pdf
16 Nov 2013
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PSYC 1010 Full Course Notes
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Consciousness & brain activity i. electroencephalograph (eeg) measures electrical activity in the. Brain waves: measures in amplitude (height) and frequency (cycles per second (cps), 4 frequency bands, beta 13-24 cps normal waking thought, problem solving, alpha 8-12 cps deep relaxation, blank mind, Meditation: theta 4-7 cps light sleep, delta 1-3 cps deep sleep, consciousness is correlated with variations of brain. Activity: biological rhythms & sleep, biological rhythms periodic fluctuations in physiological functioning. i. organisms have internal biological clocks. , circadian rhythms the 24-hour biological cycles found in humans and many animals. i. Internal clocks control many functions like sleep, hormones, urine, etc. ii. Melatonin hormone that adjusts biological clocks: ignoring circadian rhythms, going to sleep at an irregular time causes poorer quality of sleep. Affecting many conscious processes: realigning circadian rhythms i. Stage 1 brief transitional stage of light sleep: hypnic jerks muscular contractions occur during stage 1. ii. Stage 2 brief bursts of higher frequency brain waves. (sleep.
