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Tag: "sleep" at biology news

Brain region linked to fly slumber

...aising interesting speculation over the purpose of sleep and its possible link with learning and memory. ...at the so-called mushroom bodies are essential for sleep regulation in the fruitfly Drosophila melanogaster. (In the same issue, a second study, led by Amita...

Sleep deprivation doubles risks of obesity in both children and adults

...School at the University of Warwick has found that sleep deprivation is associated with an almost a two-fol...both groups Professor Cappuccio found that shorter sleep duration is associated with almost a two-fold increased risk of being obese. The research also sug...

Breaks in hibernation help fight bugs

...ergy to stay warm is high. The immune system is in sleep mode as well. "The production of antibodies, and white blood cells is stopped. Basically all cell reproduction shuts off," says Angela Luis, a doctoral candidate in ecology at Penn State's Center for Infectious Disease Dynamics. However, anim...

Ever-happy mice may hold key to new treatment of depression

...otonin is known to play an important role in mood, sleep and sexuality. By breeding mice with an absence of TREK-1, researchers were able create a depression-resistant strain. The details of this research, which involved an international collaboration with scientists from the University of Nice, France, ar...

New approach to vaccine development provides potent, long-lasting immunity

...inutes, according to the researchers, showing that sleep is not required for learning such simple movements. The robot-controlled joystick used in these experiments can measure precisely how hard and in what direction it's being pushed by the hand holding it. Using computer programs, the researchers then...

Robotic joystick reveals how brain controls movement

...inutes, according to the researchers, showing that sleep is not required for learning such simple movements. The robot-controlled joystick used in these experiments can measure precisely how hard and in what direction it's being pushed by the hand holding it. Using computer programs, the researchers then...

Studies suggest new brain protein may help in treating schizophrenia, insomnia and anxiety

...hat are associated with the regulation of arousal, sleep and wakefulness, anxiety, appetite, learning and m... promotes strong arousal, suppresses all phases of sleep and lessens anxiety in stressful or unfamiliar situations. Now, at ICN 2006, Dr. Reinscheid's grou...

How can identical twins be genetically different?

They sleep together, eat together, and most people find it impossible to tell them apart. Identical twins who grow up together share just about everything, including their genes. But sometimes only one twin will have health problems when genetics predicts both ...

First human trial of antibacterial contact lens

...n one in 500 contact lens wearers per year if they sleep in lenses. There is currently no antibacterial contact lens in the market. Biosignal's technology prevents and disrupts microbial infection by "jamming" the signalling systems bacteria rely on to form biofilms. Because the technology does not kill...

New fruit fly protein illuminates circadian response to light

...multitude of internal functions such as periods of sleep and wakefulness, body temperature, and metabolism....t for one week, the controls developed a disrupted sleep pattern after a few days, while the mutants maintained a regular circadian rhythm. The mutant and co...

New Research Shows Artificial Light at Night Stimulates Breast Cancer Growth in Laboratory Mice

...hythm, an internal biological clock that regulates sleep ?wake cycle, body temperature, endocrine functions, and a number of disease processes including heart attack, stroke and asthma. “Evidence is emerging that disruption of one’s circadian clock is associated with cancer in humans, and that interference...

A large step forward in the fight against African sleeping sickness

...can sleeping sickness. The disease produces severe sleep disorders that ultimately end in coma, followed by death. At present, fewer than 10% of the patients are treated in time. But on the other hand, the current treatment is also very toxic, and in many cases also results in the patient's death. Africa...

Gene variation increases SIDS risk in African Americans

... SIDS in half by teaching parents to put babies to sleep lying on their backs. The campaign was based, in part, on the assumption that babies sleeping on their bellies had more spells of interrupted breathing or apnea. One of the immediate consequences of apnea is a slight increase in acid levels inside ...

Oops! Researchers publish new findings on the brain's response to costly mistakes

...sed to study the brains of people with epilepsy or sleep problems, but the electrical signal from the brain is processed in a different way. In prior studies, Gehring and his colleagues observed a distinct brain electrical response to errors, dubbing it ERN for "error-related negativity." Using ERP, Gehri...

Losing sleep undoes the rejuvenating effects new learning has on the brain

...meet their obligations by getting less sleep. But sleep deprivation impairs spatial learning -- including ...ly mimic the common human experience of inadequate sleep during the work week, said lead investigator Ilana Hairston of both the University of California, Be...

Morning grogginess more debilitating than sleep deprivation, according to CU-Boulder study

... that people who awaken after eight hours of sound sleep have more impaired thinking and memory skills than they do after being deprived of sleep for more than 24 hours. The study showed test subjects had diminished short-term memory, counting s...

Team discovers possible 'universal strategy' to combat addiction

... to serotonin, a hormone associated with learning, sleep and mood. The team discovered that PTEN acts on these serotonin receptors, increasing brain cell activity. This is the same "reward" process sparked by drugs of abuse. Armed with this knowledge, the team designed a molecule called a peptide, tailore...

'Uniquely human' component of language found in gregarious birds

... previously collaborated on studies of the role of sleep in speech perceptual learning. Gentner, a neuropsychologist, expert on starlings and, at the time, a postdoctoral fellow at the University of Chicago, was an essential addition. To assess the birds' syntactical skills, the research team exploited ...

Travelers can avoid jet lag by resetting their body clocks

.... This treatment can also help those with delayed sleep phase syndrome (DSPS), a persistent condition that... Each participant was assigned a strict eight hour sleep schedule that was similar to their typical sleep schedule. In addition, they had to remain in bed, ...

What can change in the brain? Electrical synapses, research shows

...lows it to form memories, make transitions between sleep and waking, and focus attention on objects of inte...mplicate it as a major player in the regulation of sleep and wakefulness, the researchers said. The pairs' work sheds important light on electrical synapses...

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