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Lecture

Consciousness.docx

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Department
Psychology
Course
Psychology 1000
Professor
Prof
Semester
Fall

Description
Consciousness Circadian Rhythms Consciousness Sleep Stages What are the daily rhythms affecting humans? What is consciousness? What happens when you sleep? Circadian rhythms Daily cycles Blood pressure Body temperature Chemical concentration 25 hour clock Peak levels in late afternoon Best time for physical tasks Controlled by suprachiasmatic nucleus SCN = Internal timing mechanism In hypothalamus Daylight stimulates the SCN, which inhibits production of melatonin in pineal gland Darkness removes the inhibition, resulting in more melatonin... we feel tired Disturbances Jet lag and shift work Phase advance more difficult than phase delay, e.g., flying Vancouver to Halifax more problematic than east to west Take melatonin? Jury still out... Seems “safe” More effective for delay Probably works by relievin
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