{"id":6059,"date":"2014-08-06T13:20:31","date_gmt":"2014-08-06T17:20:31","guid":{"rendered":"http:\/\/www.beliefnet.com\/columnists\/dreamgates\/?p=6059"},"modified":"2014-08-06T13:20:31","modified_gmt":"2014-08-06T17:20:31","slug":"what-science-tells-us-and-does-not-tell-us-about-dreams","status":"publish","type":"post","link":"https:\/\/www.beliefnet.com\/columnists\/dreamgates\/2014\/08\/what-science-tells-us-and-does-not-tell-us-about-dreams.html","title":{"rendered":"What science tells us – and does not tell us – about dreams"},"content":{"rendered":"

\"-<\/a>What does science have to tell us about dreaming?<\/p>\n

One of the most important discoveries is that in modern urban society, few people sleep the way most humans did for all of our evolution before the introduction of artificial lighting. For hundreds of thousands of years, humans thought that what the pushers of sleep meds promise \u2014 an uninterrupted night of seven or eight hours\u2019 sleep \u2014 was an unnatural and undesirable thing.<\/p>\n

Experiments by a team led by Dr Thomas Wehr at the National Institutes of Mental Health in Bethesda have supplied compelling evidence of how our technology has ripped us from our natural cycle. Deprived of artificial lighting for several weeks, the typical subject evolved the following pattern: lying awake in bed for an hour or two, then four hours sleep, then 2-3 hours of \u201cnon-anxious wakefulness\u201d followed by a second sleep before waking for the day’s activities.<\/p>\n

One of the most exciting findings in Wehr\u2019s study involved the endocrinology of the night watch. The interval between first sleep and second sleep is characterized by elevated levels of prolactin, a pituitary hormone best-known for helping hens to brood contentedly above their eggs for long periods. Wehr concluded that the night watch can produce benign states of altered consciousness not unlike meditation.<\/p>\n

Wehr and his team put their subjects on the Paleolithic plan, without alternatives to electrical light such as candles or fire or oil lamps. The Paleolithic two-sleeps cycle wasn\u2019t only a stone age phenomenon; it was characteristic of how people spent their nights until gas lighting and then electricity became widespread.<\/p>\n

A seventeenth century Scottish legal deposition describes a weaver as \u201chaveing gotten his first sleip and awaiking furth thairof.\u201d Sleep historian Roger Ekirch\u00a0says that \u201cuntil the modern era, up to an hour or more of quiet wakefulness midway through the night interrupted the rest of most Western Europeans\u201d – and presumably most other people – so that \u201cconsolidated sleep, such as we today experience, is unnatural.\u201d<\/p>\n

This may help to explain the extent to which so many of us in our urbanized society are out of nature and out of touch with dreaming. \u201cSegmented sleep\u201d\u00a0was the norm for our ancestors until quite recently, as it remains for some indigenous peoples today. Like Virgil and Nathaniel Hawthorne, the Tiv of central Nigeria speak of \u201cfirst sleep\u201d and \u201csecond sleep\u201d. They wake at any time during the night and will talk to anyone in the hut who is also awake – often about their dreams.<\/p>\n

Most interesting, the intermediate state the French called dorveille<\/em> was widely regarded as an excellent time to birth new ideas. In 1769, the artful London tradesman Christopher Pinchbeck advertised a device called a \u201cNocturnal Remembrancer\u201d, a parchment tablet inside a box with a slit to guide the writing hand in the dark to enable \u201cphilosophers, statesmen, poets, divines and every person of genius, business or reflection\u201d to secure the \u201cflights and thoughts which so frequently occur in the course of a meditating, wakeful night.\u201d<\/p>\n

It is\u00a0possible that in our modern culture, through our suppression of ancient and natural circadian cycles, we have rendered ourselves (to quote Thomas Middleton) \u201cdisanulled of our first sleep, and cheated of our dreams and fantasies.\u201d<\/p>\n

While our modern sleep patterns may interfere with our awareness of night dreams and our ability to share them, new technologies for imaging brain activity tell us we are dreaming at night nonetheless \u2014 maybe dreaming all night long \u2014 and that some of the brain\u2019s behaviors during sleep dreams are curiously similar to those associated with creative flow in other states of consciousness. The new science of dreaming suggests the following:<\/p>\n