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sleep

Women have more sleep problems than men because of their sensitive minds

A reporter surveyed four public hospitals and found that there are 30 people, on average, go to the doctor per day in city area because they have insomnia. And 10 percents to 20 percents of them life rely on drugs to sleep. The doctor who received the report says that the number of female patients […]

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Psychological Theories of Sleep

 Sleep is an inhibition, a resting state of consciousness. Mental activity or consciousness is dependent upon peripheral incoming stimuli, and when these are absent, a lowering of mental activity follows and sleep results. According to this theory, if all peripheral stimuli are cut out, sleep will naturally follow. When we attempt to sleep, we voluntarily […]

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Chemical Theories of Sleep

Even modern physiological chemistry has tried its hand in the interpretation of such a purely psychological mechanism as sleep. It supposes that poisons are elaborated during the day, as the result of muscular and nerve activity, that these poisons are narcotic (sleep producing) in action and when they reach a certain amount, drowsiness, and then […]

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Histological Theories of Sleep

Histological Theories of Sleep These are the theories which explain sleep as being produced by certain movements which the nerve cell prolongations are supposed to possess. These prolongations are technically known as the dendrites. All nerve cells possess dendrites which touch each other and by means of which nerve currents are supposed to be transmitted […]

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Physiological Theories of Sleep Sleep is due to changes in the cerebral cirilation. A lack of blood in the brain causes what is known as cerebral anæmia. This cerebral anaemia may be due to a dilatation of the blood-vessels of the skin, which causes a fall of blood pressure in the brain. Sleep naturally results, […]

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