Understanding Circadian Rhythm and Sleep: Definitions and Stages, Quizzes of Psychology

Download Understanding Circadian Rhythm and Sleep: Definitions and Stages and more Quizzes Psychology in PDF only on Docsity! TERM 1 Circadian Rhythm DEFINITION 1 Within each 24-hour period, the regular fluctuation from high to low points of certain bodily functions and behaviors *Biological Clock* TERM 2 Suprachiasmatic nucleus (SCN): DEFINITION 2 A pair of tiny structures in the brains hypothalamus that control the timing of circadian rhythms; the biological clock TERM 3 Restorative theory of sleep: DEFINITION 3 Body rests & restores when you're sleeping TERM 4 Circadian theory of sleep: DEFINITION 4 Sleep evolved to keep humans out of harms way during the dark of night. TERM 5 NREM sleep: DEFINITION 5 Slow, regular respiration and heart rate Little body movement Blood pressure and brain activity at their 24-hour low points TERM 6 REM sleep: DEFINITION 6 Rapid eye movements Paralysis of large muscles Fast and irregular heart and respiration rates Increased brain-wave activity Vivid dreams TERM 7 Sleep Stages NREM DEFINITION 7 Stage 1: Transition from waking to sleeping; irregular waves with occasional alpha waves HYPNAGOTIC SENSATION- falling sensation Stages 2: Transition from lighter to deeper asleep; sleep spindles occur Stage 3: Deeper sleep; slow wave sleep begins when 20% of brain waves are delta waves Stage 4: Deepest sleep; begins when 50% of brain waves are delta waves TERM 8 Sleep Stages to rem sleep DEFINITION 8 1. 2. 3. 4. 3. 2. 3. 4. 3. 2. Stays at 2 or 3 for rest of the night. TERM 9 Sleep Deprivation affects DEFINITION 9 Difficulty concentrating Lapses in attention General irritability Effects on verbal learning TERM 10 PARASOMNIAS DEFINITION 10 SleepwalkingSleeptalkingSleep Terrors: Stage 4, waked up panic.Nightmares: REM sleep (remembered in vivid details)