A study in the journal Sleep shows that long-term alcoholism affects sleep even after long periods of abstinence, and the pattern of this effect is similar in both men and women. Alcoholics also had significantly more stage 1 non-rapid eye movement (NREM) sleep (8.5 percent in men, 6.3 percent in women) than controls (6.2 percent in men, 5.6 percent in women).
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 in the 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 the level of synchronous firing in the hippocampus. Previous research has suggested that coordinated activity between the hippocampus?a brain area critical for memory formation where long-term memories are stored?—?may be critical for memory formation.
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 may also provide a framework for further understanding the role of sleep in memory.
Mammalian sleep occurs in two discrete stages, slow wave sleep and rapid eye movement sleep. One of the many ways in which SWS and REM sleep differ is in the level of synchronous firing in the hippocampus.
Suppression of slow-wave sleep in healthy young adults significantly decreases their ability to regulate blood-sugar levels and increases the risk of type 2 diabetes.
Deep sleep, also called “slow-wave sleep,” is thought to be the most restorative sleep stage, but its significance for physical well-being has not been demonstrated. This study found that after only three nights of selective slow-wave sleep suppression, young healthy subjects became less sensitive to insulin.
The sleep patterns of patients in the intensive care unit are so superficial that they barely spend any time in the restorative stages of sleep that aid in healing, UT Southwestern Medical Center physicians have found.
“Current clinical-care protocols routinely and severely deprive critically ill patients of sleep at a time when the need for adequate rest is perhaps most essential,” said Dr. Randall Friese, assistant professor of burn, trauma, and critical care at UT Southwestern and lead author of a study appearing in The Journal of Trauma: Injury, Infection and Critical Care.
Suppression of slow-wave sleep in healthy young adults significantly decreases their ability to regulate blood-sugar levels and increases the risk of type 2 diabetes, report researchers from the University of Chicago Medical Center.
Deep sleep, also called slow-wave sleep, is thought to be the most restorative sleep stage, but its significance for physical well-being has not been demonstrated. This study found that after only three nights of selective slow-wave sleep suppression, young healthy subjects became less sensitive to insulin.
Evidence is mounting that sleep, or even a nap, may actually enhance information processing and learning.
New experiments by National Institute of Mental Health (NIMH) grantee Alan Hobson, M.D., Robert Stickgold, Ph.D., and colleagues at Harvard University show that a midday snooze reverses information overload and that a 20 percent overnight improvement in learning a motor skill is largely traceable to a late stage of sleep that some early risers might be missing.
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As of May 2, 2009 at 9:47 p.m. (-0500) (ET), the U.S. population
was 306,340,710. Sleep researchers estimate approximately seven percent
of the population suffers from obstructive sleep apnea. Using that
estimate, there are potentially 21,443,850 apneics in the U.S.
~~ Apnea around the world ~~
As of May 2, 2009 at 9:47 p.m. (-0500) (ET), the world population
was 6,777,286,604. Sleep researchers estimate approximately seven percent
of the population suffers from obstructive sleep apnea. Using that
estimate, there are potentially 474,410,062 apneics in the world.
