1. MODULE 24 SLEEP DEPRIVATION, SLEEP DISORDERS, AND DREAMS Unit 5 States of Consciousness

2. Effects of Sleep Loss Sleep Debt Lack of Sleep… Predictor of depression Affects performance Makes you fatter Increase ghrelin and cortisol, lowers leptin Lowers immune system Lowers reaction times and increases errors

3. Major Sleep Disorders Insomnia Persistent problem in falling or staying asleep Narcolepsy Suddenly falling asleep Lacking orexin Sleep Apnea Stop breathing periodically while sleeping Night terrors Waking up terrified, usually in children

4. Dreams Combination of images, emotions, and thoughts that occur while sleeping. Can be hallucinatory and irregular Can be so vivid you think you are awake Can evoke emotions Many times reflect the previous days events Dual track mind allows us to incorporate outside stimuli into dreams

5. Why we dream…Theories Wish fulfillment/fulfilling desires Freud: our dreams let us express hostile/sexual we cannot consciously handle manifest content: dreams actual story Latent content: underlying message your brain is trying to let out File away memories Information processing perspective Develop neural pathways

6. Theories Cont…. Make sense of neural “static” (random firing of neurons) Relies on dual track mind Reflects cognitive development Evolution of dreams indicate the development of your mind