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
Greek mythology in western art and literature works of Ovid, Greek myth influenced medieval and Renaissance poets such as Petrarch, Boccaccio and Dante in Italy. In northern Europe, Greek mythology never took the same hold of the visual arts, but its effect was very obvious on literature. Both Latin and Greek classical texts were translated, so that stories of mythology became available. In England, Chaucer, the Elizabethans and John Milton were among those influenced by Greek myths; nearly all the major English poets from Shakespeare to Robert Bridges turned for inspiration to Greek mythology. Jean Racine in France and Goethe in Germany revived Greek drama. Racine reworked