  oneirology (; from greek á½Î½ÎµÎ¹ÏÎ¿Î½, oneiron, "dream"; and -Î»Î¿Î³Î¯Î±, -logia, "the study of") is the scientific study of dreams. current research seeks correlations between dreaming and current knowledge about the functions of the brain, as well as understanding of how the brain works during dreaming as pertains to memory formation and mental disorders. the study of oneirology can be distinguished from dream analysis in that the aim is to quantitatively study the process of dreams instead of analyzing the meaning behind them. ==history== the first recorded use of the word was in 1653. in the 19th century two advocates of this discipline were the french sinologists marquis d'hervey de saint denys and alfred maury. the field gained momentum in 1952, when nathaniel kleitman and his student eugene aserinsky discovered regular cycles. a further experiment by kleitman and william c. dement, then another medical student, demonstrated the particular period of sleep during which electrical brain activity, as measured by an electroencephalograph (eeg), closely resembled that of waking, in which the eyes dart about actively. this kind of sleep became known as rapid eye movement (rem) sleep, and kleitman and dement's experiment found a correlation of .80 between rem sleep and dreaming. the independent and almost simultaneous confirmation of lucid dreaming by stephen laberge of stanford university and keith hearne encouraged further experiments and developments. ==field of work== research into dreams includes exploration of the mechanisms of dreaming, the influences on dreaming, and disorders linked to dreaming. work in oneirology overlaps with neurology and can vary from quantifying dreams, to analyzing brain waves during dreaming, to studying the effects of drugs and neurotransmitters on sleeping or dreaming. though debate continues about the purpose and origins of dreams, there could be great gains from studying dreams as a function of brain activity. for example, the knowledge gained in this area could have implications in the treatment of certain types of mental illnesses. it can help people learn about the meaning of your dreams and explain as to why we have nightmares. ==mechanisms of dreaming== dreaming occurs mainly during rem sleep, and brain scans recording brain activity have witnessed heavy activity in the limbic system and the amygdala during this period. though current research has reversed the
Dream Sleep