Tag: "wakefulness" at biology news
Out-of-body experiences may be caused by arousal system disturbances in brain
...ce as it is to occur during the transition between wakefulness
and sleep. Nelson suggests that phenomena in the b...f REM sleep elements during the transition between wakefulness
and sleep. Sleep paralysis is a common form of REM intrusion, which can cause a condition of tempo...
Research suggests a significant circadian rhythm in swim performance lasting 2-4 minutes
...ly one hour of sleep in darkness and two hours of wakefulness
in dim light, repeated throughout the length of observation. This study design distributed multiple masking factors equally across the 24-hour day and allowed multiple performance assessments to be conducted over a short period of time with relative...
UT Southwestern scientist receives NIH Director's Pioneer Award
... body's clock, regulating such processes as sleep, wakefulness
and hunger. The other 2006 winner from Texas is Dr. Cheng Chi Lee of The University of Texas Health Science Center at Houston. Eleven other winners were named from around the nation....
Need to pull an all-nighter?
...aceutical promise in developing drugs that prolong wakefulness
by curbing production of nitric oxide or scavenging the gas once it's produced. The opposite a sleeping pill made from nitric oxide donors -- would be much harder, he says, since these compounds would likely break down before ever reaching the brain...
Studies suggest new brain protein may help in treating schizophrenia, insomnia and anxiety
...scovered and, paradoxically, induces both profound wakefulness
and a less anxious state, may represent a novel target for the treatment of psychotic behavior and schizophrenia, according to new research presented at the 6th International Congress of Neuroendocrinology (ICN 2006). ICN 2006 is being held at the Da...
People with near death experiences can differ in sleep-wake control
...wake system where the boundaries between sleep and wakefulness
are not as clearly regulated, and the REM (rapid eye movement) state of sleep can intrude into normal wakeful consciousness. Examples of this REM intrusion include waking up and feeling that you cannot move, having sudden muscle weakness in your legs...
Unlike other mammals, newborn dolphins and orcas stay active 24/7 during first months of development
...ent advantages for newborn cetaceans: Movement and wakefulness
reduce danger from predators, help maintain body temperature until mass and blubber insulation develop, allow frequent respiration at the surface, and facilitate rapid growth of brain and body and related behavioral development. "Somehow these seafar...
Wisconsin researchers identify sleep gene
...rophysiological changes occurring during sleep and wakefulness
as in humans. "The electrical changes in humans look different that they do in flies because our brains are organized differently," Cirelli says. "But the EEGs showed electrophysiological changes signifying that the flies were asleep and awake." In...
Brain-mapping technique aids understanding of sleep, wakefulness
... acetylcholine. These cells are very active during wakefulness
when an animal or human is aroused and attentive. Previous studies have shown that orexin neurons project to these cells, sending positive signals downstream to help keep them active. The new study, however, shows that these acetylcholine-producing n...
What does an airline traveler have in common with a glowing fish?
...pacemaker that dictates daily rhythms in sleep and wakefulness
as well as body temperature and metabolic activity. Circadian rhythms are regulated by changes in daylight cycles, but how and when they first develop is not well understood. Reported this week in the open-access journal PLoS Biology , Maki Ka...
Sleeping, waking, ... and glucose homeostasis
...en know for some time that variations in sleep and wakefulness
are part of our circadian rhythm, or molecular clo... in a circadian manner. Besides altering sleep and wakefulness
patterns, ablation of the SCN alters the ability to regulate sugar levels. Sugar (glucose) levels mu...
Evidence that learning is consolidated during sleep
...osits that the information that is acquired during wakefulness
is actively altered, restructured, and strengthened during sleep." However, they said, exploring this consolidation process was difficult because of the complexities of both sleep and memory. For example, sleep consists of two major stages -- rapid e...