Sleep

By: Drake Bashaw & Lindsay Anders

Why Do We Sleep?Energy Conservation Theory- primary function of

sleep is to reduce an individuals need for energy.Restorative Theory- restores what is lost in our

body while we are awake, also repairs body and rejuvenates itself, repairs cells.

Brain Plasticity Theory- brain develops while asleep, and is corresponding to brain organization and structure. You save or delete what you learned that day whether or not its important.

Stage 1 of Sleep

Light sleepBetween being awake and falling asleep

Stage 2 of SleepRelinquishing of all surroundingsBreathing and Heart rate are regularBody Temperature drops

Stages 3 & 4 of SleepDeepest and most restorative sleepMuscles are relaxedEnergy is restoredHormones are released for growth and development

Breathing and Blood Pressure drops

Stages of SleepRapid Eye Movement (REM)Occurs in the first 90 minutes and every 90

recurring minutesProvides energy to brain and bodySupports daytime activityBrain is active and dreams take placeBody is immobile and muscles are “turned off”The way your eyes are pointing while you sleep

correlates with a certain memory

How light affects sleepSunlight picked up by the eye sends signals to the brain that keep us in a 24 hour schedule.

Exposure to light causes our biological clock to advance or to delay. The light will make it harder to fall asleep, or wake you up whether it’s artificial or natural lighting.

How temperature affects sleepTemperatures above 75 degree Fahrenheit and below 54 degrees Fahrenheit are disruptive to sleep, optimal temperature is 65-70 degrees.

Colder body temperature allows for a deeper sleep, warmer body temperature results in a disruption in sleep.

Before you fall asleep warmer body temperature allows for a decrease in insomnia.

Sleeping DisordersInsomnia- the inability to fall and stay asleep.Restless Legs Syndrome- A strong urge to move the legs, almost irresistible.

Sleep Apnea- causes you to stop breathing while sleeping, causes stroke and heart disease.

Parasomnias- unwanted events while sleeping, such as sleep walking, night terrors, sleep paralysis, and more.

Sleeping Disorders

Narcolepsy- neurological disorder causing daytime sleepiness and times of great fatigue.

Shift Work- is a disorder that makes it very difficult to fall asleep because of a shift in sleep patterns.

Snoring- the obstruction of airflow that causes vibrations to occur on the tissue in the back of the throat.

Why do we dream?While we dream we conjure images to evoke emotions more efficiently.

Dreams sort through important times in our lives and show them to us again, and we forget the unimportant memories.

Dreaming is a type of psychotherapy, we dream to keep emotions from bundling up inside of us.

Bibliography http://

healthysleep.med.harvard.edu/healthy/matters/benefits-of-sleep/why-do-we-sleep By a division of sleep medicine at Harvard Medical school. December 18, 2007.

http://sleepfoundation.org/bedroom/see.php By Stephan Zucker 1972. National Academy of Sciences.

http://www.huffingtonpost.com/dr-christopher-winter/best-temperature-for-sleep_b_3705049.html By Dr. Christopher Winter 08/09/13

http://sleep.stanford.edu/sleep-disorders/ By Stanford Hospital http://www.webmd.com/sleep-disorders/excessive-sleepiness-10/sleep-101

Kimball Johnson 6/16/12 http://www.psychologytoday.com/blog/the-literary-mind/200911/what-do-drea

ms-do-us By Llana Simons 11/11/09

http://www.sleepeducation.com/sleep-disorders By American Academy of Sleep Medicine

http://www.scientificamerican.com/article/why-do-we-dream/ By Ernest Hartmann 7/10/06

http://worldsleepday.org/environmental-sleep-factors/ 03/14/14