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Latest Slow-wave sleep Stories

2009-04-16 15:32:53

Jet lag is the bane of many travelers, and similar fatigue can plague people who work in rotating shifts. Scientists know the problem results from disruption to the body's normal rhythms and are getting closer to a better understanding that might lead to more effective treatment. New University of Washington research shows the disruption occurs in two separate but linked groups of neurons in a structure called the suprachiasmatic nucleus, below the hypothalamus at the base of the brain. One...

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2009-03-21 14:35:00

Hugh Christie School in Kent County, Ssouthern England has been starting classes at 11:00 a.m. for nearly two years, for teens between 16 and 18 years old. The classes run until 5:00 p.m. and the school is considering extending the policy to younger teenagers.  This school is one of many in Britain that delay classes till midmorning.  In the United States, schools in 19 states have pushed back their start times.  Over 100 school districts in 17 more states are considering...

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2009-02-26 08:58:42

Research on the sleeping brain has revealed some fascinating stage-dependent interactions between areas involved in formation and storage of long term memories. The study, published by Cell Press in the February 26th issue of the journal Neuron, may also provide a framework for further understanding the role of sleep in memory. Mammalian sleep occurs in two discrete stages, slow wave sleep (SWS) and rapid eye movement (REM) sleep. One of the many ways in which SWS and REM sleep differ is in...

2009-01-05 08:38:15

An unusual sleep disorder could be a precursor to dementia or Parkinson's disease. Patients with REM sleep behavior disorder have excessive muscle activity during REM sleep -- often called the dream stage of sleep -- causing them to punch, kick or cry out when they are in a deep sleep. Of the 93 REM sleep behavior patients involved in the study, 26 developed a neurodegenerative disease within five years. Doctors estimate the 10-year disease development risk to be 41 percent and the 12-year...

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2008-11-25 10:50:00

Just in time for Thanksgiving, some new medical advice many people will be happy to hear: Take a nice, long, turkey induced nap. Interrupting sleep badly interrupts memory-making, convincing new research implies. However, taking a nap can increase a sophisticated form of memory that aids in seeing the big picture and become more artistic. "Not only do we need to remember to sleep, but most certainly we sleep to remember," said Dr. William Fishbein, a cognitive neuroscientist at the City...

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2008-08-29 14:11:39

Recent research suggests that people in their 80s and 90s typically get fewer hours of sleep, but are less likely to report feeling overly sleepy the next day. In a relatively large study of 5,407 participants, Dr. Mark L Unruh of the University of Pittsburgh Medical Center and his colleagues designed a study to determine whether "sleep problems in older adults should be addressed by treating underlying conditions rather than viewed as simply a consequence of aging." "This study is novel in...

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2008-04-17 09:35:00

Researchers at the University of Alberta have discovered sleep patterns in a type of anesthesia that are the closest ever to a natural, non-groggy snooze.The anesthetic used in the study, known as ethyl carbamate or urethane, provides researchers with a tool to more thoroughly investigate ways of treating sleep disorders and improving existing sleep medications, says Clayton Dickson, one of the study's co-authors and an associate professor of psychology, physiology and neuroscience at the...

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2008-03-19 11:50:00

Somnambulism (sleepwalking), which usually involves misperception and unresponsiveness to the environment, mental confusion and amnesia about sleepwalking episodes, affects up to 4 percent of adults. There has been a sharp rise in the number of studies relating sleepwalking to aggressive and injurious behaviors, including homicides, but unlike most sleep disorders, sleepwalking is diagnosed on the basis of the patient's clinical history, since there is no proven method of confirming the...

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2008-03-03 15:15:00

Pigeons prevented from taking naps in the afternoon sleep more intensely at nightIn humans, as in all mammals, sleep consists of two phases: deep, dreamless slow-wave-sleep (SWS) alternates with dream phases, called Rapid Eye Movement (REM)-sleep. Although several studies suggest that information is processed and memories are consolidated during sleep, this remains a hotly debated topic in neurobiology. Comparative studies in birds may help to clarify the function of sleep by revealing...

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2005-09-29 19:25:00

MADISON - In the human brain, cells talk to one another through the routine exchange of electrical signals. But when people fall into a deep sleep, the higher regions of the brain - regions that during waking hours are a bustling grid of neural dialogue - apparently lose their ability to communicate effectively, causing consciousness to fade. Writing today (Sept. 30) in the journal Science, a team of researchers led by University of Wisconsin-Madison professor of psychiatry Giulio Tononi...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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