Sleep Presentation.pptx
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What we need to know about Sleep What we all want before it is time, and none of us want when it is time.
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Transcript of Sleep Presentation.pptx
What we need to know about
Sleep
What we all want before it is time, and none of us want when it is time.
What is sleep?
What is a sleep deficit? A shortage of sleep that leads to tiredness and to other health problems.
Why do you need to sleep?Disease (cardiovascular disease, diabetes, hypertension, stroke, other heart problems). Obesity. Accidents. School performance
Let’s think...
Your Body's Biological ClockRegular changes happen in your body everyday. Circadian Rhythms are naturally occurring physical, behavioral, and mental changes in the body that typically follow the 24 hr cycle of the sun. Most Circadian rhythms are controlled by the bodies master biological clock. This clock is called the suprachiasmatic nucleusThe suprachiasmatic nucleus is in the hypothalamus and controls many responses in the body including, sleep -wake cycle, body temperature, brain waves and hormone levels.
Let’s Think...The science of Sleep
Your body's biological clock determines when you feel tired and when you feel awake. The night and afternoon are the times when you will typically feel tired. Light and the hormone melatonin affect the SCN to make you feel tired.
Sleep and the Circadian Rhythm
Stages of sleep
Stages of sleep cont.
During sleep, people experience repeated cycles of NREM and REM sleep, beginning with an NREM phase. This cycle lasts approximately 90 to 110 minutes and is repeated four to six times per night. As the night progresses, however, the amount of deep NREM sleep decreases and the amount of REM sleep increases. Figure 4 graphically depicts the pattern of cycling we experience. The term ultradian rhythm (that is, rhythm occurring within a period of less than 24 hours) is used to describe this cycling through sleep stages.
Sleep is a cyclical process
How we measure sleep
The wavy lines of the EEG are called brain waves. An electrooculogram (EOG) uses electrodes on the skin near the eye to measure changes in voltage as the eye rotates in its socket. Scientists also measure the electrical activity associated with active muscles by using electromyograms (EMGs). In this technique, electrodes are placed on the skin overlaying a muscle. In humans, the electrodes are placed under the chin because muscles in this area demonstrate very dramatic changes during the various stages of sleep.
How much sleep do you need?
Now...how much do you really get?
Lack of sleep can kill you?
Answer the questions….
Sleep is an active process involving specific cues for its regulation. Although there are some modest decreases in metabolic rate, there is no evidence that any major organ or regulatory system in the body shuts down during sleep.Some brain activity, including delta waves, increases dramatically. Also, the endocrine system increases secretion of certain hormones during sleep, such as growth hormone and prolactin. In REM sleep, many parts of the brain are as active as at any time when awake.
Misconception 1: Sleep is time for the body in general and the brain specifically to shut down for rest.
When daily sleep time is less than an individual needs, a “sleep debt” develops. Even relatively modest daily reductions in sleep time (for example, one hour) can accumulate across days to cause a sleep debt. If the debt becomes too great, it can lead to problem sleepiness. Although the individual may not realize his or her sleepiness, the sleep debt can have powerful effects on daytime performance, thinking, and mood.
Misconception 2: Getting just one hour less sleep per night than needed will not have any effect on daytime functioning.
The biological clock that times and controls a person’s sleep/wake cycle will attempt to function according to a normal day/night schedule even when that person tries to change it. Those who work night shifts naturally feel sleepy when nighttime comes. A similar feeling that occurs during travel is known as jet lag. This conflict, set up by trying to be active during the brain’s biological nighttime, leads to a decrease in cognitive and motor skills. The biological clock can be reset, but only by appropriately timed cues and even then, by one to two hours per day at best. Problems resulting from a mismatch of this type may be reduced by behaviors such as sleeping in a dark, quiet room, getting exposure to bright light at the right time, and altering eating and exercise patterns. Because humans function best when they sleep at night and act in the daytime, the task for a person who must be active at night is to retrain the biological clock (by light cues).
Misconception 3: The body adjusts quickly to different sleep schedules.
Older people don’t need less sleep, but they often get less sleep, and can function (in a limited way) with less sleep. That’s because the ability to sleep for long periods of time and to get into the deep, restful stages of sleep decreases with age. Many older people have more fragile sleep and are more easily disturbed by light, noise, and pain than when younger. They are also more likely to have medical conditions that contribute to sleep problems.
Misconception 4: People need less sleep as they grow older.
Excessive daytime sleepiness can be associated with a sleep disorder or other medical condition. Sleep disorders, including sleep apnea (that is, absence of breathing during sleep), insomnia, and narcolepsy, may require behavioral, pharmacological, or even surgical intervention to relieve the symptoms. Extra sleep may not eliminate daytime sleepiness that may be due to such disorders.
Misconception 5: A “good night’s sleep” can cure problems with excessive daytime sleepiness.
● Go over the 5 rules to better sleep.● The sleep food connection● The most important thing you don't know a
bout sleep● The power of napping
Why can’t I sleep?
The science of sleep
Why do we sleep?
Sleep and the mind
10 things that can help….
Also…● Control light, sound and distractions.● Get active● Get comfortable● Get on a schedule● Relax and let outside world and problems go…● Loose technology, TV, phones, etc.
What are things that you can do?
http://www.huffingtonpost.com/2012/02/29/sleeping-pills-risks-death-hypnotics_n_1307097.html
http://www.huffingtonpost.com/2014/01/15/ambien-side-effect-sleepwalking-sleep-aid_n_4589743.html
Potential risks of taking prescription sleeping pills
Get in to your group. Look at your materials. See if you need any more information on your position. Here is what you need to do:Review the material with your group. List and identify 3 key points from the articles that you found particularly interesting or compelling and support your argument. Include quotes or factual statistics that stood out to you from the reading. DEBATE- (2 min) Explain your groups opinion and state your position about our district’s possible late start? can include any alternatives you may like instead? Should include your facts and be a sound argumentRebuttal - You will have 1 min to rebut the other groups ideas. Final Thought- (closing argument) You will have 1 min to sum up your ideas and close the debate.
NOW - Pick a side (well get assigned a side) and argue your side using your facts and information! Don’t forget to use the debate ground rules.
What about the Late start time for School?
While you are dreaming, your body undergoes noticeable changes. Your adrenaline rises, your blood pressure increases, and you heart beats faster. Given this hyperactivity, it should be no surprise how someone with a weak heart can die in their sleep. Their heart may not be able to withstand the strain and the erratic changes that their body is going through.
The Mechanics of Dreaming
