Sleep In animals presentation.pptx - SLEEP IN ANIMALS ALEXIS EARL BIOL 35700-02 DECEMBER 8 2015 1 OVERVIEW WHAT IS SLEEP CHARACTERISTICS BRAIN WAVES

Sleep In animals presentation.pptx - SLEEP IN ANIMALS...

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SLEEP IN ANIMALS ALEXIS EARL BIOL 35700-02 DECEMBER 8, 2015 1
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OVERVIEW WHAT IS SLEEP? CHARACTERISTICS BRAIN WAVES THEORIES SLEEP DEPRIVATION CONCLUSION 2
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SLEEP WE SPEND A THIRD OF OUR LIVES SLEEPING, AN ACTIVITY AS CRUCIAL TO OUR HEALTH AND WELL-BEING AS EATING. BUT EXACTLY WHY WE NEED SLEEP HASN'T ALWAYS BEEN CLEAR. WE KNOW THAT SLEEP MAKES US FEEL MORE ENERGIZED AND IMPROVES OUR MOOD, BUT WHAT'S REALLY HAPPENING IN THE BRAIN AND BODY WHEN WE'RE AT REST? 3
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WHAT IS SLEEP? SLEEP IS A NATURALLY RECURRING STATE CHARACTERIZED BY REDUCED OR ABSENT CONSCIOUSNESS, RELATIVELY SUSPENDED SENSORY ACTIVITY, AND INACTIVITY OF NEARLY ALL VOLUNTARY MUSCLES. IT IS DISTINGUISHED FROM WAKEFULNESS BY A DECREASED ABILITY TO REACT TO EXTERNAL STIMULI. IT IS TO BE DISTINGUISHED FROM COMA, WHICH IS UNCONSCIOUSNESS FROM WHICH THE PERSON CANNOT BE AROUSED. SLEEP IS OBSERVED IN ALL MAMMALS, ALL BIRDS, MANY REPTILES, AMPHIBIANS AND FISH. 4
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SLEEP IS NEARLY A UNIVERSAL PHENOMENON, AND HAS TWO STATES IN BIRDS AND MAMMALS SLEEP IS A WIDESPREAD PHENOMENON CHARACTERIZED BY SEVERAL FEATURES: 1. PERIODS OF MINIMAL MOVEMENT 2. REDUCED RESPONSIVENESS TO EXTERNAL STIMULI 3. RAPID REVERSIBILITY (AS OPPOSED TO HIBERNATION, WHICH IS NOT) 4. A CHARACTERISTIC BODY POSTURE ~EXAMPLES: BATS, OTTERS, HORSES HTTP:// 5
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SLEEP IS AN ACTIVE PROCESS
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