Hypnos comes from the name of his Latin counterpart, Somnus. (in- "not" + somnus "sleep"), as well as a few less-common words such as "somnolent", meaning sleepy or tending to cause sleep and hypersomnia meaning excessive sleep, which can be caused by many conditions (known as secondary hypersomnia) or a rare sleep disorder causing excessive sleep with unknown cause, called Idiopathic Hypersomnia. 3D model of "Bronze head of Hypnos" via laser scan of a cast of British Museum's bronze. Hypnos In Greek mythology, Hypnos (; , "sleep") is the personification of sleep; the Roman equivalent is known as Somnus. In the
Bronze Head of Hypnos from Civitella d'Arna and poppies in his hands. Sculptural images of Hypnos are unusual, and only a handful of similar statues are known in Western Europe. The bronze head was originally discovered in the small Umbrian town of Civitella d'Arna. Little is known of the circumstances of the find until it became part of the Castellani Collection. The British Museum purchased the bronze sculpture, along with other parts of the collection, in 1868. Bronze Head of Hypnos from Civitella d'Arna The Bronze Head of Hypnos is a Roman copy of an ancient Greek statue found at Civitella d'Arna near Perugia in central Italy.