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ScienceDaily: Nyt om Mind & Brain

Udgiv indhold Mind & Brain News -- ScienceDaily
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: 29 min 2 sec siden

For drivers with telescopic lenses, driving experience and training affect road test results

fre, 03/27/2015 - 19:30
For people with low vision who need bioptic telescopic glasses to drive, previous driving experience and the need for more training hours are the main factors affecting performance on driver's license road tests, according to a new study.
Kategorier: Hjernen

Love the cook, love the food: Attraction to comfort food linked to positive social connections

fre, 03/27/2015 - 18:21
A big bowl of mashed potatoes. What about spaghetti and meatballs? Sushi? Regardless of what you identify as comfort food, it’s likely the attraction to that dish is based on having a good relationship with the person you remember first preparing it.
Kategorier: Hjernen

We don’t notice much of what we see: 85 college students tried to draw the Apple logo from memory; 84 failed

fre, 03/27/2015 - 15:11
Of 85 UCLA undergraduate students, only one correctly recalled the Apple logo when asked to draw it on a blank sheet of paper, psychologists found. Fewer than half correctly identified the logo when shown several options.
Kategorier: Hjernen

How body's good fat tissue communicates with brain

fre, 03/27/2015 - 15:10
Brown fat tissue, the body’s “good fat,” communicates with the brain through sensory nerves, possibly sharing information that is important for fighting human obesity, such as how much fat we have and how much fat we’ve lost, according to researchers.
Kategorier: Hjernen

Teenagers shape each other's views on how risky a situation is

fre, 03/27/2015 - 14:10
Young adolescents' judgements on how risky a situation might be are most influenced by what other teenagers think, while most other age groups are more influenced by adults' views, finds new research. For the study, 563 visitors to the London Science Museum were asked to rate the riskiness of everyday situations such as crossing a road on a red light or taking a shortcut through a dark alley.
Kategorier: Hjernen

Playing music by professional musicians activates genes responsible for brain function and singing of songbirds

fre, 03/27/2015 - 14:09
Although music perception and practice are well preserved in human evolution, the biological determinants of music practice are largely unknown. According to a latest study, music performance by professional musicians enhanced the activity of genes involved in dopaminergic neurotransmission, motor behavior, learning and memory. Interestingly, several of those up-regulated genes were also known to be responsible for song production in songbirds, which suggests a potential evolutionary conservation in sound perception and production across species.
Kategorier: Hjernen

Big data allows computer engineers to find genetic clues in humans

fre, 03/27/2015 - 14:06
Computer scientists tackled some big data about an important protein and discovered its connection in human history as well as clues about its role in complex neurological diseases.
Kategorier: Hjernen

Domestic violence victims may be hurt by mandatory arrest laws

tor, 03/26/2015 - 23:36
Mandatory arrest is a law enforcement policy that was created in an effort to curb domestic violence in the United States. But a recent study by sociologists suggests that the law may be intimidating victims from actually calling the police to report an instance of abuse.
Kategorier: Hjernen

Stereotypes lower math performance in women, but effects go unrecognized

tor, 03/26/2015 - 21:26
A new study suggests that gender stereotypes about women's ability in mathematics negatively impact their performance. And in a significant twist, both men and women wrongly believe those stereotypes will not undermine women's math performance -- but instead motivate them to perform better.
Kategorier: Hjernen

The brain in the supermarket: Index strategy informs decision-making

tor, 03/26/2015 - 20:23
Researchers suggest that your brain is most likely deploying an 'index strategy,' a straightforward ranking of products, when you shop. It may not be an absolutely perfect calculation, given all the available information, but the study suggests that an index strategy comes very close to being optimal, and is a far easier way for consumers to make their choices.
Kategorier: Hjernen

Researchers identify timeline for HIV replication in the brain

tor, 03/26/2015 - 20:22
HIV can begin replicating in the brain as early as four months after initial infection, researchers have discovered. One-third of people not taking antiretroviral therapy (ART) to control their HIV will eventually develop HIV-associated dementia. The study's results in these newly infected people stress the importance of routine HIV testing to catch the infection as early as possible to allow the prompt initiation antiretroviral therapy, investigators note.
Kategorier: Hjernen

Intergenerational transmission of abuse and neglect more complicated than previously believed

tor, 03/26/2015 - 20:22
Offspring of parents with histories of child abuse and neglect are themselves at risk for childhood neglect and sexual abuse but not physical abuse.
Kategorier: Hjernen

Calcium channels play a role in neuronal homeostasis, elimination of toxic buildup of proteins

tor, 03/26/2015 - 20:16
Mutations of human homologs (genes that carry out similar functions) of cacophony and its partner straightjacket cause defects in autophagy in neurons, researchers have discovered. Autophagy is the body's first-line of defense against the buildup up of toxic substances, degrading old organelles and proteins to provide new substrates and building blocks. In this way, autophagy prevents the buildup of "garbage" that can result in destruction of neurons and cause neurologic diseases.
Kategorier: Hjernen

Avoiding neurodegeneration: Nerve cells borrow a trick from their synapses to dispose of garbage

tor, 03/26/2015 - 20:16
Genetic defects affecting tiny channels in human nerve cells lead to several neurological diseases that result from aberrant nerve transmission, such as episodic ataxia, absence epilepsy, and migraines. These disorders have also been associated with neurodegeneration, but it has been less clear why this should be.
Kategorier: Hjernen

Study adds evidence on link between PTSD, heart disease

tor, 03/26/2015 - 18:09
In a study of more than 8,000 veterans in Hawaii and the Pacific Islands, those with posttraumatic stress disorder had a nearly 50 percent greater risk of developing heart failure. The study adds to a growing body of evidence linking PTSD and heart disease. The research to date--including these latest findings--doesn't show a clear cause-and-effect relationship. But most experts believe PTSD, like other forms of chronic stress or anxiety, can damage the heart over time.
Kategorier: Hjernen

Crossing fingers can reduce feelings of pain

tor, 03/26/2015 - 18:08
How you feel pain is affected by where sources of pain are in relation to each other, and so crossing your fingers can change what you feel on a single finger, finds new research. "Many people suffer from chronic pain, and the level of pain experienced can be higher than would be expected from actual tissue damage. Our research is basic laboratory science, but it raises the interesting possibility that pain levels could be manipulated by applying additional stimuli, and by moving one part of the body relative to others," the senior author explained.
Kategorier: Hjernen

Medulloblastoma: Promising drug target identified

tor, 03/26/2015 - 18:08
A protein has been found that is critical to both the normal development of the brain and, in many cases, the development of medulloblastoma, a fast-growing brain tumor that usually strikes children under 10. When the researchers cut the level of the protein Eya1 in half in mice prone to develop medulloblastoma, the animals' risk of dying from the disease dropped dramatically.
Kategorier: Hjernen

How the brain 'remembers' pain

tor, 03/26/2015 - 18:07
A mechanism that is responsible for the chronification of pain in the brain has been discovered by researchers, possibly pointing to new strategies for the medical treatment of chronic pain, the investigators say.
Kategorier: Hjernen

Sea slug provides new way of analyzing brain data

tor, 03/26/2015 - 18:07
Scientists say our brains may not be as complicated as we once thought -- and they're using sea slugs to prove it. “This research introduces new methods for pulling apart neural circuits to expose their inner building blocks. Our methods could be used to help understand how brain networks change in disease states and how drugs act to restore normal brain function,” authors say.
Kategorier: Hjernen

Veterans' avoidant coping interfers with transition to university life

tor, 03/26/2015 - 17:21
A study of 165 veterans currently enrolled at three Texas universities shows that those who use problem-focused coping strategies for anxiety and depression instead of avoidant coping have more successful transitions from military life to college student life.
Kategorier: Hjernen