Enforced Longer Cycles
Studies by Nathaniel Kleitman in 1938 and by Derk-Jan Dijk and Charles Czeisler in 1994/5 have put human subjects on enforced 28-hour sleep–wake cycles, in constant dim light and with other time cues suppressed, for over a month. Because normal people cannot entrain to a 28-hour day in dim light if at all, this is referred to as a forced desynchrony protocol. Sleep and wake episodes are uncoupled from the endogenous circadian period of about 24.18 hours and researchers are allowed to assess the effects of circadian phase on aspects of sleep and wakefulness including sleep latency and other functions.
Read more about this topic: Circadian Rhythm
Famous quotes containing the words enforced, longer and/or cycles:
“Let reverence for the laws, be breathed by every American mother, to the lisping babe, that prattles on her lap—let it be taught in schools, in seminaries, and in colleges;Mlet it be written in Primers, spelling books, and in Almanacs;Mlet it be preached from the pulpit, proclaimed in legislative halls, and enforced in courts of justice.”
—Abraham Lincoln (1809–1865)
“In the wings the tenor hungers
For the heroine’s convulsive kiss, and Faust
Moves forward, no longer young, reappearing
And reappearing for the last time. The opera
Faust would no longer need its phantom.
On the bare, sunlit stage the hungers could begin.”
—John Ashbery (b. 1927)
“The stars which shone over Babylon and the stable in Bethlehem still shine as brightly over the Empire State Building and your front yard today. They perform their cycles with the same mathematical precision, and they will continue to affect each thing on earth, including man, as long as the earth exists.”
—Linda Goodman (b. 1929)