PSY100Y5 Chapter Notes - Chapter 5: Hashish, Hypnotic Induction, Psychological Dependence
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PSY100Y5 Full Course Notes
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Mental processes continue during sleep, as some stimuli can penetrate awareness. Research suggest that decision made when people do not have the chance to make conscious deliberations may sometimes be more accurate. The evolutionary significance of consciousness is a matter of debate. Changes in consciousness are correlated with changed in brain activity as measured by. Circadian (24 hour) rhythms are influential in the regulation of sleep. Internal biological clocks are reset by exposure to light, which stimulates the scn, which signals the pineal gland to secrete melatonin. The poor sleep associated with jet lag and rotating shift work is due to being out of sync with circadian rhythms. Administration of melatonin, and exposure to bright light appear to have some value in efforts to realign circadian rhythms that are out of sync. Non-rem sleep consists of stages 1-4, marked by an absence of rapid eye movements, relatively little dreaming and varied eeg activity.
