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tag sleep wake cycle culture developmental biology

Opinion: The Biological Function of Dreams
Robert Stickgold and Antonio Zadra | Dec 1, 2020 | 3 min read
The scenarios that run through our sleeping brains may help us explore possible solutions to concerns from our waking lives.
Book Excerpt from When Brains Dream
Robert Stickgold and Antonio Zadra | Dec 1, 2020 | 8 min read
Ferreting out the biological function of dreaming is a frontier in neuroscience.
Sleep’s Kernel
Sandip Roy and James M. Krueger | Mar 1, 2016 | 10 min read
Surprisingly small sections of brain, and even neuronal and glial networks in a dish, display many electrical indicators of sleep.
Who Sleeps?
The Scientist and Jerome Siegel | Mar 1, 2016 | 10+ min read
Once believed to be unique to birds and mammals, sleep is found across the metazoan kingdom. Some animals, it seems, can’t live without it, though no one knows exactly why.
Why sleep?
Richard Gallagher | Apr 1, 2009 | 3 min read
Many ask, but few answer. We present two of science's most intriguing theories.
Scientists Engineer Dreams to Understand the Sleeping Brain
Catherine Offord | Dec 1, 2020 | 10+ min read
Technologies such as noninvasive brain stimulation and virtual reality gaming offer insights into how dreams arise and what functions they might serve.
Genetic And Molecular Mysteries Of Sleep Are Keeping Researchers Alert
Alison Mack | Oct 27, 1996 | 9 min read
SIDEBAR : Sleep Research Resources Some consider sleep an unavoidable nuisance; others, a sweet indulgence. For the most part, though, we take our slumber for granted, rarely considering why we spend a hefty chunk of our lives unconscious. But for sleep researchers, that question represents a supreme mystery. Exactly what purpose sleep serves, as well as how the body regulates sleeping and waking, remain largely unknown. Behavioral scientists and physiologists have pursued these questions for
Keeping Time with Drosophila
Laura Bonetta | Feb 3, 2002 | 10 min read
Circadian clocks—the biological timekeepers that operate on a daily cycle—keep virtually every living creature in tune with its environment. These internal clocks regulate a wide range of fundamental biological processes, including movement, smell, sleep, mating, and feeding. A true circadian clock is endogenous; that is, it keeps time even in the absence of external cues. The clock can, however, be reset, or entrained, by daylight, allowing the synchronization of circadian rhythms t
An illustration of flowers in the shape of the female reproductive tract
Uterus Transplants Hit the Clinic
Jef Akst | Aug 1, 2021 | 10+ min read
With human research trials resulting in dozens of successful deliveries in the US and abroad, doctors move toward offering the surgery clinically, while working to learn all they can about uterine and transplant biology from the still-rare procedure.
Circadian Rhythm Science Lesson
Eugene Russo | Jan 21, 2001 | 6 min read
Credit: Howard Hughes Medical InstituteThe above graphs show data from teenagers and adults who participated in an 11-day activity study. Each person's Horne-Ostberg score was plotted on the x-axis and his average waking time on the y-axis. The Horne-Ostberg survey identifies a person as an "evening" or "morning" type. As part of its annual educational outreach lecture series, the Howard Hughes Medical Institute recently had high school students participate in a large-scale circadian rhythm sci

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