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Essay / Research Paper Abstract
5 pages in length. Normal stages of sleep occur in four incremental steps, with Stage I being the hazy period of transition between sleep and consciousness called presleep or drowsiness and lasts about ten minutes until the beginning of Stage II, which continues approximately fifteen minutes. Stage III brings about a high presence of delta activity as it prepares the brain for Stage IV, which begins about one and one-half hours after Stage I. Obvious changes take place as people move into the first forty-five minutes of the final stage of sleep as their physiological composition manifests in unstable EEG readings and the presence of REM, the rapid side-to-side flitting of eyes that indicates deep sleep. Bibliography lists 3 sources.
Page Count:
5 pages (~225 words per page)
File: LM1_TLCsleepstg.rtf
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Unformatted sample text from the term paper:
ten minutes until the beginning of Stage II, which continues approximately fifteen minutes. Stage III brings about a high presence of delta activity as it prepares the brain for
Stage IV, which begins about one and one-half hours after Stage I. Obvious changes take place as people move into the first forty-five minutes of the final stage of
sleep as their physiological composition manifests in unstable EEG readings and the presence of REM, the rapid side-to-side flitting of eyes that indicates deep sleep (Quigley et al 16). Under
normal circumstances, newborns spend the vast majority of their day in various stages of sleep, typically sixteen to eighteen hours. This is not to say that they sleep in
one, long stretch of uninterrupted sleep, but rather this sleep is greatly scattered throughout the entire twenty-four hours. Babies require such a tremendous amount of sleep as their bodies
are in a constant state of rapid growth, both mentally and physically. Between the ages of four months and one year, the amount of sleep necessary declines by approximately
four to five hours each day; between three and five years of age, the number drops by yet another two to three hours, as well as "becomes gradually restricted to
the night" (Sleep Physiology). A total of less than ten hours is typical for those between the ages of ten years through adolescence, with that number of hours declining even
more as the adolescent moves into adulthood. Interestingly, the drop in hours of sleep with this particular stage does not necessarily reflect any less of a need to sleep,
inasmuch as daytime sleepiness begins to intrude, but rather is indicative of external influences (parties, studying, etc.) altering normal sleeping patterns. The onset of old age triggers substantial changes
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