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Published on Nov 19, 2015
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PRESENTATION OUTLINE
1.
Sleep
By Marci Walton
Photo by
Jan de Graaf
2.
Overview of Sleep
Sleep is a natural part of everyone's life
We spend about 1/3 of our life asleep
Important for motor and cognitive functions
Sleep is required for survival
Photo by
Bev Goodwin
3.
Circadian Rhythm
Physical, mental, and behavioral changes
Roughly follows 24-hour cycle
Primarily responds to light and darkness
Circadian rhythms have genetic components
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~fb~
4.
Sleep Stages
Stage 1: Transition into sleep
Stage 2: Brain produces sleep spindles
Stage 3: Delta waves begin to emerge
Stage 4 (REM): Dreams occur
Photo by
peasap
5.
REM Sleep
REM stands for Rapid Eye Movement
Occurs during the 4th stage of sleep
Heightened brain activity
Dreams occur
Muscles become paralyzed
Photo by
pedrosimoes7
6.
Insomnia
Insomnia is a sleep disorder
Difficulty falling asleep
Waking up too early
Feeling tired upon waking
Photo by
Prince Lang Gallery
7.
Narcolepsy
Neurological disorder
Affects control of sleep and wakefulness
Excessive daytime sleeping
Uncontrollably falling asleep
REM sleep occurs almost imediately
Photo by
Katrox - www.kevingoudin.com
8.
Sleep Apnea
Breathing repeatedly stops and starts
Loud snoring
Obstructive sleep apnea: Throat muscles relax
Central sleep apnea: Brain doesn't send signals
Photo by
jessleecuizon
9.
Importance of Sleep
Improves memory
Longer life
Happier
More creative
Photo by
Maggie Osterberg
Marci Walton
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