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Learn about migraine headache symptoms and treatment. Read the latest research on the various types of headaches such as migraine headaches, sinus headaches, and cluster headaches, among others. Find out the causes of headaches and how to get relief.
Opdateret: 12 hours 45 min siden

Take a walk in the sun to ease time change woes, sleep expert says

tor, 10/30/2014 - 21:30
Daylight saving time ends at 2 a.m. on Sunday, Nov. 2. As clocks turn back one hour, we gain an hour of sleep but often still feel groggy and sluggish. A sleep expert says this change in sleep schedule is exacerbated by our tendency to alter our sleep patterns on the weekends anyway.
Kategorier: Hjernen

Fetal alcohol spectrum disorders prevalence in U.S. revealed by study

tor, 10/30/2014 - 20:06
Nearly 5 percent of U.S. children may be affected by fetal alcohol spectrum disorders (FASD), according to a new study. FASD are a group of conditions that can occur in the children of mothers who drank alcohol during pregnancy. Characteristics are both physical and cognitive and can include abnormal facial features, smaller-than-average physical growth, poor coordination, learning disabilities and vision and hearing problems.
Kategorier: Hjernen

High-intensity sound waves may aid regenerative medicine

tor, 10/30/2014 - 19:19
Researchers have developed a way to use sound to create cellular scaffolding for tissue engineering, a unique approach that could help overcome one of regenerative medicine’s significant obstacles.
Kategorier: Hjernen

Campaign to reduce firearm suicide wins support among firearm retailers in New Hampshire

tor, 10/30/2014 - 18:35
Nearly half of firearm retailers in New Hampshire displayed materials from a firearm suicide prevention campaign generated by a coalition of gun owners and public health professionals.
Kategorier: Hjernen

Toddlers copy their peers to fit in, but apes don't

tor, 10/30/2014 - 18:33
From the playground to the board room, people often follow, or conform, to the behavior of those around them as a way of fitting in. New research shows that this behavioral conformity appears early in human children, but isn't evidenced by apes like chimpanzees and orangutans.
Kategorier: Hjernen

Sadness lasts longer than other emotions

tor, 10/30/2014 - 18:31
Why is it that you can feel sad up to 240 times longer than you do feeling ashamed, surprised, irritated or even bored? It's because sadness often goes hand in hand with events of greater impact such as death or accidents. You need more time to mull over and cope with what happened to fully comprehend it, say researchers. This is the first work to provide clear evidence to explain why some emotions last a longer time than others.
Kategorier: Hjernen

Why scratching makes you itch more

tor, 10/30/2014 - 18:29
Turns out your mom was right: scratching an itch only makes it worse. New research reveals that scratching causes the brain to release serotonin, which intensifies the itch sensation. Scientists uncovered serotonin's role in controlling pain decades ago, but this is the first time the release of the chemical messenger from the brain has been linked to itch, they say.
Kategorier: Hjernen

Together we are strong -- or insufferable

tor, 10/30/2014 - 16:49
Everyone can have an impact on the dynamics of a group, particularly if they join forces with others, experts say. "What interested us most, however, was how the individual can contribute to the development of stable cooperation within the group," they say of their research, which was actually able to calculate mathematically which strategies promote cooperation.
Kategorier: Hjernen

New molecule sneaks medicines across blood/brain barrier

tor, 10/30/2014 - 16:49
Delivering life-saving drugs across the blood-brain barrier (BBB) might become a little easier thanks to a new study. In the new report, scientists describe an antibody, called 'FC5,' is one-tenth the size of a traditional antibody and able to cross the BBB.
Kategorier: Hjernen

Can parents make their kids smarter?

tor, 10/30/2014 - 16:47
Reading bedtime stories, engaging in conversation and eating nightly dinners together are all positive ways in which parents interact with their children, but according to new research, none of these actions have any detectable influence on children's intelligence later in life. A criminology professor examined a nationally representative sample of youth alongside a sample of adopted children and found evidence to support the argument that IQ is not the result of parental socialization.
Kategorier: Hjernen

Peripheral clocks don't need the brain's master clock to function correctly

tor, 10/30/2014 - 15:28
New research further adds to our understanding of the circadian rhythm by suggesting that the suprachiasmaticus nucleus clock, a tiny region of the hypothalamus considered to be the body's 'master' timekeeper, is not necessary to align body rhythms with the light-dark cycle.
Kategorier: Hjernen

Breakdown in gut barriers to bacteria may promote inflammation and craving in alcoholics

tor, 10/30/2014 - 15:28
Bacteria in the GI tract fulfill many vital functions and are critical for digestion. Yet, these same bacteria can induce strong inflammatory responses by the immune system if they penetrate the gut and enter the bloodstream. Prior research has established the involvement of inflammatory processes in the development of psychiatric disorders, including major depression and alcohol dependence, but the origins of such inflammation have remained unclear. Now, researchers have found that inflammatory pathways are stimulated in alcohol-dependent patients by bacteria that escape the gut barrier, which correlated with alcohol craving.
Kategorier: Hjernen

Even mild depressive symptoms result in poorer lumbar spinal stenosis surgery outcome

tor, 10/30/2014 - 15:28
Even mild depressive symptoms can weaken the outcome of lumbar spinal stenosis surgery, according to a recent study. Patients with depressive symptoms had a weaker functional capacity post-surgery even five years after surgery. "The results indicate that attention should be paid to even mild depressive symptoms both before and after the surgery. This would allow health care professionals to recognize patients who might benefit from enhanced psychosocial support as part of their surgery-related treatment and rehabilitation process," says the first author.
Kategorier: Hjernen

Greater inequality within UK, USA than some developing countries, trade 'footprint' shows

tor, 10/30/2014 - 15:16
An inequality footprint has been devised by researchers, demonstrating the link that each country's domestic economic activity has to income distribution elsewhere in the world. "The footprint maps the movement of commodities around the world. It is a new tool which can assist businesses, government and non-government organisations in understanding the complex dynamics of inequality and trade," said the lead author of the paper.
Kategorier: Hjernen

Minutes in Criminal Procedures: Writing Style Influences Judges

tor, 10/30/2014 - 15:07
The formal style of interrogation records influences the reception of judges and the decisions they take – even when the actual content is the same. This was shown in a large scale study in which 645 Swiss judges participated. To date, it had only been understood that minutes containing wrong or missing statements could provoke false rulings.
Kategorier: Hjernen

Lou Gehrig's disease study: Renewing brain's aging support cells may help neurons survive

tor, 10/30/2014 - 15:05
Lou Gehrig’s disease, also known as amyotrophic lateral sclerosis, or ALS, attacks muscle-controlling nerve cells – motor neurons – in the brain, brainstem and spinal cord. Patients typically survive only three to five years after diagnosis. Now ALS researchers know the effects of the attack are worsened, at least in part, by the aging and failure of support cells called astrocytes, which normally provide nutrients, housekeeping, structure and other forms of assistance for neurons.
Kategorier: Hjernen

Possible cause of common dementia found, opening avenues for treatment

tor, 10/30/2014 - 15:05
A major cause of dementia has been potentially discovered, scientists report. In the type of dementia studied, there is damage to the white matter (nerve fibres) of the brain apparent on computerized tomography (CT) and magnetic resonance imaging (MRI) scans of older individuals.
Kategorier: Hjernen

Expectant mothers with epilepsy face tough choices over their medication

tor, 10/30/2014 - 01:40
A new study highlights the difficult decisions women with epilepsy have to face when they become pregnant. Taking certain drugs used to control epilepsy during pregnancy may be linked to developmental problems in children. The authors of the study say evidence on the safety of anti-epileptic drugs is limited and that more research is needed to ensure women and their doctors make the most informed choices.
Kategorier: Hjernen

Case study: Hearing loss in one infant twin affects mother's speech to both babies

tor, 10/30/2014 - 01:39
Is it possible that hearing loss in one infant from a pair of twins can affect the mother’s speech to both infants? A new acoustics study zeroes in on this question and suggests that not only is this alteration of speech entirely possible, but that mothers speak to both infants as if they are hearing impaired.
Kategorier: Hjernen

The science of charismatic voices: How one man was viewed as authoritarian, then benevolent

tor, 10/30/2014 - 01:39
When a right-wing Italian politician named Umberto Bossi suffered a severe stroke in 2004, his speech became permanently impaired. Strangely, this change impacted Bossi’s perception among his party’s followers -- from appearing authoritarian to benevolent. Now researchers think they know why.
Kategorier: Hjernen