Psychology 132 3-17-08

Psychology 132 3-17-08 - -Dreams are more “lucid” and...

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Psychology 132 3-17-08 Humans have been artificially selecting breeding/growing different animal plants for about ROUGHLY 10-15,000 years Lunesta – EEG is a device to measure Awake and Sleep Stages - Awak (fast frequency/low amplitude) - Stage 1 - Stage 2 (sleep spindles/K-complexes) - Stage ¾ (increasing slow delta waves) - REM Stage 1 Non-REM sleep - light sleep – We drift in and out of sleep and can be awakened easily Stage 2 Non-REM sleep - Body temperature Drops - Eye movements stop - Brain waves become slower - Occasional bursts of sleep spindles Stage 3 Non-REM Sleep - Delta Waves appear - If awakened, one does not adjust immediately and often feels groggy or disoriented Stage 4 Non-REM sleep - Stages 3 and 4 referred to as “deep sleep - EEG almost exclusively delta waves - Blood pressure falls, breathing slows, body temperature continues to drop Stage 5 REM (rapid eye movement) - Breathing more rapid, irregular and shallow - Eyes jerk rapidly in various directions and our limb muscles become temporarily paralyzed
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Unformatted text preview: -Dreams are more “lucid” and related to events during awake You cycle through sleep stages roughly every 90 minutes different drugs, stress and sleep deprivation can alter cycling. Caffeinated Drinks (eg. Coffee) and drugs (e.g. diet pills stimulate parts of the brain that help us sleep Stimulants (caffeine, amphetamine, nicotine) can cause insomnia and chronic difficulties in initiating or maintaining sleep Alcohol helps people fall into light sleep, but disrupts sleep cycles (less REM, les stage 3/4) Sleep disorders-almost half of American adults suffer from sleep disorders o Why? o They don’t sleep enough – have a regular sleep cycle Sleep disorders-insomnia-inability to sleep-Somnanbulism – sleep walking-Night mares-Night terrors – predominately in 2-4 year olds-Narcolepsy – overpowering urge to sleep-Sleep apnea – breathing dysfunction during sleep (disrupts sleep and sleep stage)-What happens if you are REM deprived?...
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Psychology 132 3-17-08 - -Dreams are more “lucid” and...

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