A RE Y OU D REAMING?. The Adaptation of Sleep. Generating Questions. Sleep Dreams What do you think? Why do humans dream?. Current Theories. 1. Physiological stimulations 2. Psychologically necessary 3. Combination of physiology & psychology. Dream Facts. 5 to 20 minutes
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ARE YOU DREAMING? The Adaptation of Sleep
Generating Questions • Sleep • Dreams What do you think? Why do humans dream?
Current Theories 1. Physiological stimulations 2. Psychologically necessary 3. Combination of physiology & psychology
Dream Facts • 5 to 20 minutes • Not just black and white • Several dreams a night • People blind from birth dream with other senses • When people are snoring, they're not dreaming. • Elephants sleep standing up during non-REM sleep, but lie down for REM sleep.”
Effects of too little sleep • Skipping one night's sleep…cranky/clumsy • Two nights of no sleep…problems thinking/doing normal tasks • Five nights without sleep…hallucinations • Eventually…brain cannot give directions to the rest of the body
Adaptation • Are sleep & dreaming adaptive? • Is human sleep unique?