SLEEP, state, periodically arising up for a man and other warm-blooded animals, which motive and sensory activity is interrupted at. A sensitiveness goes downuring sleep, many muscles are weakened, reflexes are put on the brakes. Sleep differs ot the snopodobnykh states — coma, anesthesia, hibernation or hypnosis — tem, that he comes under the action of internal, instead of external factors, and at him a capacity is saved for awakening.
Nature of sleep always caused the promoted interest and served as cause for the great number of guess-work and suppositions. It not surprising, as the third of life of persons conducts in sleep. In ancient cultures there were various deities, patronizing sleep. In Greek mythology god of sleep was named Gipnosom, in Roman — Somnusom. Morpheus, god ofdreams, was one of thousand sons of Somnusa.
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