Stages of Sleep The EEG (Electroencephalogram)of a waking person is clearly different than that of a sleeping person. The difference in EEG patterns that occur during sleep has made it possible to divide sleep into five different stages. Stage One We experience stage one of sleep when we are half asleep and half awake; our eyelids feel heavy‚ we feel groggy and suddenly without notice we fall asleep. Stage one counts for more or less 5% our total sleep during the night. Stage
Premium Sleep Electroencephalography
There are four basic functions of money: The first is as a medium of exchange. The second is as a unit of account. The third is as a store of value. The fourth is as liquidity. The most obvious function of money is as a medium of exchange. When you hand the waiter a five-dollar bill in exchange for your hamburger‚ you are using money as a medium of exchange. You might have a hard time paying for your hamburger with five dollars worth of apples‚ but if you did‚ the apples would serve as a
Premium Currency Money
Importance of Sleep : Six reasons not to scrimp on sleep A recent survey found that more people are sleeping less than six hours a night‚ and sleep difficulties visit 75% of us at least a few nights per week. A short-lived bout of insomnia is generally nothing to worry about. The bigger concern is chronic sleep loss‚ which can contribute to health problems such as weight gain‚ high blood pressure‚ and a decrease in the immune system’s power‚ reports the Harvard Women’s Health Watch. While more
Premium Sleep deprivation Immune system Sleep
iThe Effects of Sleep Deprivation on Individual Productivity Sleep is a basic necessity of life. The current 24-hour society‚ we use precious nighttime hours for daytime activities. In the past century‚ we have reduced the average sleep time by 20 percent and‚ in the past 25 years‚ added a month to the average annual work time (National Sleep Foundation‚ 1999). The sleep habits of society has changed but the bodies of individuals have not. Sleep problems have become a modern epidemic that
Free Sleep deprivation Sleep
SLEEP APNEA What is Sleep Apnea? The Greek word "apnea" literally means "without breath." There are three types of sleep apnea: obstructive‚ central‚ and mixed; of the three‚ Obstructive Sleep Apnea (OSA) is the most common. Despite the difference in the root cause of each type‚ in all three‚ people with untreated sleep apnea stop breathing repeatedly during their sleep‚ sometimes hundreds of times during the night and often for a minute or longer. Obstructive sleep apnea is caused by a blockage
Premium Sleep apnea Sleep
Sleep Deprivation About one in three adults fail to get enough sleep each night. Sleep deprivation occurs when a person doesn’t get enough hours of sleep. On average most adults need about seven to eight hours of sleep a night. There are many different causes of sleep deprivation‚ these causes lead to certain effects on a person. There are also many ways to avoid and cope with sleep deprivation. Sleep is needed to “charge” a persons body‚ especially the brain and without sleep the body will not
Free Sleep deprivation Sleep Sleep disorder
Sleep Deprivation ‘What effects does sleep deprivation have on people?’ Assessment Type 4: Investigation – STAGE 2 ESL CONTENTS PAGES INTRODUCTION…………………………………………………………………………………………………………………………3 DEFFINITION………………………………………………………………..……………………………………………………………3 STATISTICS………………………………………………………………….…………………………………………………………….4 CAUSES & EFFECTS…………………………….………………………………………………………………………………………4 SOLUTIONS…………………………………………………………………………………………………………………….………….5 CONCLUSION…...…………………………………………………………………………………………………………………………5
Free Sleep Sleep deprivation Sleep disorder
Sleep is a physical and mental resting state in which a person becomes relatively inactive and unaware of the environment. In essence‚ sleep is a partial detachment from the world‚ where most external stimuli are blocked from the senses. Normal sleep is characterized by a general decrease in body temperature‚ blood pressure‚ breathing rate‚ and most other bodily functions. In contrast‚ the human brain never decreases inactivity. Studies have shown that the brain is as active during sleep as it
Premium Sleep
section Literature Review of Sleep Deprivation Sleep deprivation is a pattern of sleeping where an individual fails to get enough sleep during the night. On average‚ adults need seven to eight hours‚ were teens and children need an average of nine hours of sleep to feel well rested (1). Numerous literatures expand on the topic of sleep deprivation and the effects it has on the human body. This literature can be divided into three parts: 1) studies that show how sleep deprivation causes changes in
Free Sleep
Need for Sleep and effects of Sleep Deprivation on Cognitive Performance Poojan Nikunjkumar Mehta 2012CS10241 Siddarth KM 2012CS10256 Index Terms Sleep‚ Sleep deprivation‚ memory consolidation‚ temporal memory‚ decision making‚ visual processing. Introduction Sleep is an everyday phenomenon‚ which many people take for granted. It is very important to know its need and what happens when we don’t sleep properly. This article is aimed at studying different theories regarding sleep and the
Premium Sleep