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Somnology
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<p>Somnology is the scientific study of <a href="/facts/Sleep/0bSDElWc">sleep</a>. It includes clinical study and treatment of <a href="/facts/Sleep_disorders/jFdkz1Pr">sleep disorders</a> and irregularities. <a href="/facts/Sleep_medicine/nR0zkSUs">Sleep medicine</a> is a subset of somnology. Hypnology has a similar meaning but includes <a href="/facts/Hypnotic/0SBVYkMe">hypnotic</a> phenomena. </p>