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 mythology to the indigenous pre-Greek societies: Crete, Mycenae, Pylos, Thebes and Orchomenus. Historians of religion were fascinated by a number of apparently ancient configurations of myth connected with Crete (the god as bull, Zeus and Europa, Pasiphaë who yields to the bull and gives birth to the Minotaur, etc.). Martin P. Nilsson asserts, based on the representations and general function of the gods, that a lot of Minoan gods and religious conceptions were fused in the Mycenaean religion. and concluded that all great classical Greek myths were tied to Mycenaean centres and anchored in prehistoric times. Nevertheless, according to Burkert,