title: [Sleep: its nature and methods of measurement].
mesh_terms: D001921:Brain / Q000502:physiology; D002320:Cardiovascular Physiological Phenomena; D002940:Circadian Rhythm; D004569:Electroencephalography; D006801:Humans; D006993:Hypnotics and Sedatives / Q000494:pharmacology*; D012890:Sleep / Q000187:drug effects / Q000502:physiology*
chemical_list: D006993:Hypnotics and Sedatives
vernacular_title: Il sonno: sua natura e metodi di misurazione.