Cognitive impairment Mood dysregulation Tiredness sleep disruption Digestive

Cognitive impairment mood dysregulation tiredness

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Cognitive impairment Mood dysregulation Tiredness, sleep disruption Digestive disorders Death (indirect) - Circadian Rhythms vary from one individual to another due to genetic differences Per-3 gene (short=night owl, long=morning person) Do Cycles Affect Mood? - SAD: Seasonal Affective Disorder Decrease in sunlight Treatment includes light therapy, meds - PMS: Premenstrual Syndrome Physical symptoms: cramps, water retention, fatigue, breast tenderness, headaches, etc. Irritability and other mild emotional symptoms may be a reaction to physical symptoms Sever emotional/psychological symptoms are rare Stages of Sleep - Indicated by changes in brain waves - EEG (electroencephalography): measures brain wave patterns using recording electrodes attached to scalp; Beta waves when awake (13-24 cps) Alpha waves when drowsy (8-12 cps) - Stage 1: Theta waves (4-7 cps) Light sleep; 1-7 minutes Breathing and heart rate slow down Muscles start to release some of their tension; hypnic jerks Body temperature starts to drop
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- Stage 2: Mixed waves; sleep spindles Lasts 10-25 minutes Breathing, heart rate, muscle tension, body temp continues to decrease In general, brain waves start to slow down and get a bit higher in amplitude—but also see a very mixed pattern of brain waves Sleep spindles—bursts of high frequency waves K complexes, sudden, sharp waveforms - Stage 3 and 4: Delta waves (<4 cps); deep sleep (‘slow wave’ sleep) Usually takes about half an hour to get to stage 4—deepest stage You’re hardest to wake up during this stage, confused and disoriented if awoken - REM sleep: ‘Paradoxical sleep’; rapid eye movement Physiological arousal at levels similar to being awake Some twitching, but very relaxed muscle tone (sleep paralysis) Signs of sexual arousal Vivid dreams (most dreaming) - Sleep cycles: Cycle= about 90 minutes REM becomes longer and deep sleep becomes shorter Age Effects - Newborns spend about 50% of their time in REM sleep - Adults spend about 20-25% of time in REM - REM sleep stays stable throughout adulthood, but deep sleep decreases with age Functions of Sleep - Supporting the importance of sleep: Occurs across diverse taxonomic groups Recovery or rebound sleep Negative (sometimes serious) consequences of sleep deprivation - Sleep as a ‘time out’ period: Time to repair, restore, and replenish Eliminates waste products Repair cells Replenish energy stores, or conserve energy Strengthen immune system Recover abilities lost during day - Mental Consequences of sleep deprivation: Increased cortisol production- stress Impaired learning and memory Reduced or impaired neurogenesis Impaired attention and information processing; Attentional deficits- increased accident risks Lowered mental flexibility and creativity Mood disturbances Hallucinations, delusions, paranoia - Physical Consequences of sleep deprivation
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Low energy Hormonal irregularities
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