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Latest Rapid eye movement sleep Stories

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2009-03-11 09:15:00

A study reviewing the unique sleeping habits of walruses indicates that the mammals are peculiar and unusual nappers, as they can doze off anywhere, but also may shatter the world's record for constantly staying awake. One of the oddest things about the walrus's sleeping habits is that the creatures can sleep in the ocean. "In water, walruses slept while floating at the surface, lying on the bottom or standing and leaning," noted sleep expert Jerome Siegel and his fellow researchers. The...

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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...

2009-01-29 14:28:30

Falling asleep involuntarily during the day poses a very real and dangerous problem, Canadian researchers said. Researchers at the Montreal Neurological Institute at McGill University demonstrates sleep-wake states are regulated by two types of nerve cells, melanin-concentrating hormone neurons and orexin neurons, which occupy the same region of the brain, but perform opposite functions. The study is the first to discover that melanin-concentrating hormone neurons are activated during sleep...

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...

2008-09-21 21:00:10

By Rajen M. YOU need sleep like you need food, water and air. It is as natural as that. Yet, we humans willfully withhold sleep and deprive our bodies of its natural mechanism for rest and restoration. Sometimes too much stress and lack of exercise can also cause sleep disturbance. Somnipathy is a medical term for disorders of natural sleep patterns. Some sleep disorders are serious enough to interfere with normal physical, mental and emotional functioning. A polysomnogram test is...

2d539ec73f63472aa46708fb743d43cb1
2008-08-02 18:05:00

Scientists from the National Center on Sleep Disorders Research reported Friday that people with severe sleep apnea, also known as sleep-disordered breathing, are many times more likely to die from any cause than those without the condition. The 18-year study confirmed previous, smaller studies suggesting an increased risk of death for people with the disorder. "This is not a condition that kills you acutely. It is a condition that erodes your health over time," Dr. Michael J. Twery,...

5d34290eb690753d12ee5d518cae53781
2008-07-24 00:25:00

Along with all the other changes that come with age, healthy older people also lose some capacity for sleep, according to a new report published online on July 24th in Current Biology, a Cell Press publication. When asked to stay in bed for 16 hours in the dark each day for several days, younger people get an average of 9 hours of shuteye compared to 7.5 for older people, the researchers report. "The most parsimonious explanation for our results is that older people need less sleep," said...

2008-05-09 16:37:54

If you've been recently rescued from sleepwalking, here's a possible reason why you went zombie - lack of sleep. Sleepwalkers should keep a regular bedtime to avoid unwanted evening strolls, said Antonio Zadra Universite de Montreal, who led a team that recently investigated the link between sleep loss and sleepwalking. Somnambulism, which affects up to 4 percent of adults, can cause mental confusion, bouts of amnesia and even physical injuries in those affected as they wander....

e7b2a707c0f205ef8be8774713c17c1f1
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...


Word of the Day
kenspeckle
  • Having so marked an appearance as easily to be recognized.
This word may come from the Swedish 'kanspak,' quick at recognizing persons or things, or else from confusion with 'conspicuous.'