WHY WE SLEEP The Functions of Sleep in Humans and Other Mammals J.A. Horne Published by Oxford University Press 1988 Contents CHAPTER 1 Introduction 1.1 Early Sleep Theories 1.2 Daily Sleep and Wakefulness 1.3 Measuring Sleep References CHAPTER 2 Sleep Deprivation 2.1 Problems with Animal Experiments 2.2 Recent Animal Experiments 2.3 Some Problems with Human Experiments 2.4 1896 - The First Real Sleep Deprivation Experiment on Humans 2.5 The Longest Study - 264 hours
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Human Computer Interaction: Prelim Project Anxiety disorders are‚ by far‚ the most common psychological disorder. Anxiety is a natural human reaction that involves mind and body. It serves an important basic survival function: Anxiety is an alarm system that is activated whenever a person perceives danger or threat. When the body and mind react to danger or threat‚ a person feels physical sensations of anxiety — things like a faster heartbeat and breathing‚ tense muscles‚ sweaty palms‚ a
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important for kids to get a good night sleep 1. Sleep is restorative for the brain. 2. Too little sleep can lead to weight gain by altering levels of the hormones that regulate satiety and hunger‚ leading to overeating‚ overweight‚ and obesity. 3. Growth hormone is secreted during slow wave sleep. 4. Insufficient sleep is associated with a higher incidence of behavioral problems‚ especially attention deficit and hyperactivity disorder (ADHD). 5. Sleep disruption caused by snoring in
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What exactly is sleep apnea? Many people think sleep apnea is where a person cannot sleep‚ but sleep apnea is a lot more than just not being able to sleep. Sleep Apnea is a disorder where a person will have one or more pauses of not breathing while sleeping (Gary 2014). This can be very dangerous and cause many health problems. Sleep apnea can be caused by daily lifestyle choices or just a specific problem that someone is born with. What are the risks if not treated? There are many medical issues
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Stage 1 Sleep NREM stage 1 sleep serves a transitional role in sleep-stage cycling. Aside from newborns and those with narcolepsy and other specific neurological disorders‚ the average individual’s sleep episode begins in NREM stage 1.Stage 2 sleep lasts approximately 10 to 25 minutes in the initial cycle and lengthens with each successive cycle‚ eventually constituting between 45 to 55 percent of the total sleep episode. An individual in stage 2 sleep requires more intense stimuli than in stage
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The biological basis for sleep is replenishment and it is essential to our minds and our body. Without getting the amount of sleep our bodies need it begins to affect us mentally. Sleep deprivation can affect normal motor functions‚ weight and eventually shorten your lifespan. While you sleep your brain goes through stages called rapid eye movement (REM) and non-REM (NREM). You dream during the REM stages and “dream content frequently connects with recent experience and things we have been thinking
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Bipolar disorder is one of the oldest known illnesses. Extensive research reveals that there was some mention of the symptoms in early medical records‚ which date back to the 1600’s. Bipolar was first noticed as far back as the second century. Aretaeus of Cappadocia (a city in ancient Turkey) first recognized some symptoms of mania and depression‚ and felt they could be linked to each other. Aretaeus’s findings went unnoticed and unsubstantiated until 1650‚ when a scientist named Richard Burton wrote
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as a good night’s sleep‚ waking up in the morning bright and active to start the new day. There is also something very necessary about good sleep because if sleep is shortened or disrupted even for one night‚ most of us will feel tired and irritable until we have good quality sleep again. For most of the people‚ sleep at night re-fuels and services both body and mind‚ so as to be prepared for activities during the day. But for some reasons‚ there are some people experiencing sleep problems—one of which
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Now the question here today is why do we sleep. While this might seem to be a simple question to answer for most there are actually quit a few theories that have been developed and question as far back as the Greek philosophers‚ to explain why humans need to sleep in order to survive. First lets start off with that sleep means. The definition of sleep‚ according to the Cambridge English Dictionary is the resting state in which the body is not active and the mind is unconscious. Now‚ having the definition
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Sleep Apnea is a common disorder in which you have shallow breaths or one or more pauses while breathing during sleep. The breathing pauses can last from a few seconds to a few minutes. Typically they may occur 30 times or more per hour. Short after‚ normal breathing then starts again. Sometimes with a choking sound‚ or loud snort. sleep apnea is usually a chronic ongoing condition that interrupts your sleep. When breathing pauses or becomes short‚ you often shift from deep sleep into light sleep
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