Reality most americans less than hours of sleep

Info icon This preview shows pages 13–24. Sign up to view the full content.

Reality: most Americans LESS than ___hours of sleep. Overeating—sleep deprivation Boredom—sleep deprivation
Image of page 13

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 14
What We Know The ____is the control center for our 24 hour rhythm of sleep (for this blank this also referencing our earlier discussions regarding hunger, thirst, etc.). One of these neurological transmitters is_____, a hormone connected to the wake-sleep cycles that builds up while we sleep.
Image of page 15

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Stages of Sleep The sleep-wake cycle itself is circadian. As we relax and attempt to sleep, our brain waves start to cycle more slowly. Once we fall asleep, we go through 4 stages of somewhat quiet sleep before entering the more vivid dreaming stage.
Image of page 16
± Falling asleep ² – a gradual decrease in responsiveness to outside stimuli Brain waves become smaller, more irregular Typically lasts 1-7 minutes (2-5% of sleeping time) Stage 1 sleep
Image of page 17

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Stage 2 sleep The period of actual sleep (45-55% of sleeping time) Brain produces occasional short bursts of rapid, high-peak waves called sleep spindles Unlikely to be disturbed by minor noises
Image of page 18
Stage 3 sleep Beginning of deep sleep Combined with Stage 4, accounts for 10-25% of sleeping time Brain begins to produce delta waves, which are very slow waves with very high peaks Heart rate and breathing slow, muscle tension decreases, eye movements stop
Image of page 19

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Stage 4 sleep Deep sleep – difficult to be awakened Delta waves predominant in brain activity Heart rate and body temperature greatly reduced This is the period of sleep when sleepwalking and night terrors can occur
Image of page 20
REM Sleep? A reoccurring sleep stage characterized by eye movement, vivid dreams, and loss of muscle tone. *Also called paradoxical sleep…WHY?
Image of page 21

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

REM Sleep Rapid Eye Movement (REM) sleep occurs during Stage 1 sleep Occupies about 20-25% of sleeping time – longer as the night proceeds Brain is active, similar to when you are awake ( ± paradoxical sleep ² ) Body is physiologically aroused (rapid heart rate, faster breathing, elevated blood pressure, but muscles are paralyzed) Most dreaming occurs in REM sleep – if awakened, you are likely to recall dreaming
Image of page 22
Image of page 23

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 24
This is the end of the preview. Sign up to access the rest of the document.
  • Spring '08
  • Fuller,Charles/Goldberg,Jack
  • REM Sleep, Sleep Spindles, deep sleep, somewhat quiet sleep, Theory REM sleep

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern