In 1951 a discovery in Nathaniel kleitmans sleep lab at the unviersity of Chicago changed how we would view the idea of sleeping and dreaming forever. Kleitman and William Dement would continue to discover that during sleep we pass repeatedly through five differnet stages every night. Each cycle lasts about ninety minutes and each stage of sleep is clearly distinguished from our prone awake states. Stage one is the light stage of sleep which lasts for about five to ten minutes. During this time our brain activity powers down by fifty percent. This in return produces theta waves which occur four to seven times per seconds slower than that of the beta waves who are produced thirteen or more times per second during active alert states. The alpha
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Which we then give way into a deeper sleep, and waves begin to slow, it is here where delta waves occur. These are as slow as one to two cycles a second, in the EEG. In stage three delta waves appear twenty to fifty percent of the times, while in stage four they present themselves more than half the time. Stage five also known as REM sleep, stages one through four are known as non REM sleep. During stage five sleep begins after about fifteen to thirty minutes. Then we return to stage two and with high frequency, low amplitude waves in which they resemble those of wakefulness. We then enter stage five, during this time in rem sleep increased heart rate and blood pressure, rapid, and irregular breathing occur, this is about twenty to twenty five percent of our night’s sleep. After ten to twenty minutes of REM sleep the cycle starts again. Rem periods toward the early morning typically typically last for a half hour an hour or more compared with the ten to twenty minutes we spend in REM after falling asleep. Although we don’t dream only during REM sleep we dream more in REM. These dreams are emotional, logical, and prone to sudden shifts in …show more content…
Some researchers suggest that REM and NREM dreams aren’t asdistinct as once believed. Thus REM sleep is biologically important and increasingly essential. When humans are deprived of REM sleep we experience REM rebound- the amount of intensity of REM sleep increases, suggesting that REM serves a critical biological function, during this time we tend to experience more intense dreams, ocassionaly even night mares. During REM sleep our brains are creating dreams, while our bodies are relaxed. This is sometimes called REM sleep paradoxical sleep becauxe the brain is active at the same time the body is inactive. REM behviour disorder (RBD) only effects 1/200 persons, more frequently in men over the age of fifty, in this condition the brain stem structures that ordinarly prevent us from moving during REM sleep don’t function properly, RBD may be a very early marker of dementia and parkinsons disease, with RBD emergin an average of fourteen totwenty yers before major symptoms of neurodegenerative diseases first appear. Another important topic in dreams is lucid dreaming. lucid ddreams are a hybrid or mixed state of consciousness with features of both waking and REM
Which we then give way into a deeper sleep, and waves begin to slow, it is here where delta waves occur. These are as slow as one to two cycles a second, in the EEG. In stage three delta waves appear twenty to fifty percent of the times, while in stage four they present themselves more than half the time. Stage five also known as REM sleep, stages one through four are known as non REM sleep. During stage five sleep begins after about fifteen to thirty minutes. Then we return to stage two and with high frequency, low amplitude waves in which they resemble those of wakefulness. We then enter stage five, during this time in rem sleep increased heart rate and blood pressure, rapid, and irregular breathing occur, this is about twenty to twenty five percent of our night’s sleep. After ten to twenty minutes of REM sleep the cycle starts again. Rem periods toward the early morning typically typically last for a half hour an hour or more compared with the ten to twenty minutes we spend in REM after falling asleep. Although we don’t dream only during REM sleep we dream more in REM. These dreams are emotional, logical, and prone to sudden shifts in …show more content…
Some researchers suggest that REM and NREM dreams aren’t asdistinct as once believed. Thus REM sleep is biologically important and increasingly essential. When humans are deprived of REM sleep we experience REM rebound- the amount of intensity of REM sleep increases, suggesting that REM serves a critical biological function, during this time we tend to experience more intense dreams, ocassionaly even night mares. During REM sleep our brains are creating dreams, while our bodies are relaxed. This is sometimes called REM sleep paradoxical sleep becauxe the brain is active at the same time the body is inactive. REM behviour disorder (RBD) only effects 1/200 persons, more frequently in men over the age of fifty, in this condition the brain stem structures that ordinarly prevent us from moving during REM sleep don’t function properly, RBD may be a very early marker of dementia and parkinsons disease, with RBD emergin an average of fourteen totwenty yers before major symptoms of neurodegenerative diseases first appear. Another important topic in dreams is lucid dreaming. lucid ddreams are a hybrid or mixed state of consciousness with features of both waking and REM