sleep and dreams pysc 2000

sleep and dreams pysc 2000 - Sleep and Dreams M odule 8...

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Module 8 Sleep and Dreams
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Rhythm of Sleep   A  Circadian Rhythm  is a daily behavioral or  physiological cycle that occurs on a roughly 24-hour  cycle and includes sleep and wakefulness.  Thinking is sharpest and memory most accurate  when people are at their daily peak in circadian  rhythm.   morning-larks             night-owls      morning-larks  transition begins between 13 and 20 years of age
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 moving from awake and alert  awake but relaxed sleep  Measuring sleep: About every 90 minutes, we pass  through a cycle of five distinct sleep stages.  Stage 1  Stage 2  Stage 3  Stage 4  REM Sleep Stages
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During strong mental engagement, the brain exhibits  low amplitude and fast, irregular  beta waves.  An awake  person involved in a conversation shows beta activity. Beta Waves
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Awake but Relaxed When an individual closes his eyes but remains awake,  his brain activity slows down to a large amplitude and  slow, regular  alpha waves .   A meditating person  exhibits an alpha brain activity.
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During early, light sleep (stages 1-2) the brain enters a  high-amplitude, slow, regular wave form called  theta  waves . A person who is  daydreaming shows theta  activity. Sleep Stages 1-2 Theta Waves
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Sleep Stage 1 During stage 1 you may also experience  hypnagogic  sensations : images resembling hallucinations—sensory experiences  that occur without a sensory stimulus Feels like your falling 
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sleep and dreams pysc 2000 - Sleep and Dreams M odule 8...

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