Dictionary of Hallucinations

ONEIROI

The name Oneiroi is related to the Greek nounoneiros, which means * dream. In Greek mythology, the Oneiroi feature as gods in the service of Hypnos, the god of sleep. According to the Roman poet Publius Ovidius Naso, better known as Ovid (43 BC-AD 17), there are three Oneiroi: *Morpheus, the god associated with the human element in dreams, his brother *Phobetor, associated with animal forms, and his other brother *Phantasos, associated with inanimate objects. In an alternative reading, Morpheus is considered the most powerful god of dreams, charged with the task of governing the dream as a whole.
References
Ovid (1986).The metamorphoses. Translated by Melville, A.D. Oxford: Oxford University Press.