PSYCH101 Lecture Notes - Circadian Rhythm, Theta Wave, Delta Wave

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PSYCH101 Full Course Notes
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PSYCH101 Full Course Notes
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Not dangerous to wake someone while sleep walking. Our awareness of ourselves and our environment. Circadian rhythm: the regular biological rhythms that occur on a roughly 24-hour clock; the. "biological clock: alertness, temperature, hormones, body temperature rise as morning approaches, peaks during the day, drops when we go to sleep, bright light in the morning activates light sensitive retinal proteins. Proteins trigger signals to the brain"s suprachiasmatic nucleus in the hypothalamus. Scn causes pineal gland to decrease production of sleep - inducing hormone melatonin: artificial light messes with circadian rhythm and delays sleep. Young people"s cognition better later in the day, older people"s cognition better earlier in the day. To measure brainwaves, attach electrodes to the head and measure brainwaves. Just before sleep: alpha waves in the midst of beta waves. Taller, jagged: still awake: records alpha waves. Transition to sleep marked by slow breathing and irregular theta waves: stage 1 sleep: theta waves, more distance between the waves.

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