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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: 1 hour 16 min siden

REM sleep critical for young brain development; medication interferes

fre, 07/03/2015 - 20:02
Rapid eye movement or REM sleep actively converts waking experiences into lasting memories and abilities in young brains, reports a new study. The finding broadens the understanding of children's sleep needs and calls into question the increasing use of REM-disrupting medications such as stimulants and antidepressants.
Kategorier: Hjernen

Novel DNA repair mechanism brings new horizons

fre, 07/03/2015 - 20:02
The DNA molecule is chemically unstable giving rise to DNA lesions of different nature. That is why DNA damage detection, signaling and repair, collectively known as the DNA damage response, are needed. A group of researchers has discovered a new mechanism of DNA repair, which opens up new perspectives for the treatment and prevention of neurodegenerative diseases.
Kategorier: Hjernen

Documenting how dementia sufferers benefit from GPS

fre, 07/03/2015 - 12:27
A brand new study of 200 dementia sufferers in Norway reveals that almost all experience greater peace of mind and increased levels of physical activity using GPS devices.
Kategorier: Hjernen

Rapid response to kids' stroke symptoms may speed diagnosis

tor, 07/02/2015 - 23:38
A rapid response plan for children at a hospital quickly identified stroke and other neurological problems. One in four children with stroke-like symptoms were diagnosed with stroke and 14 percent were diagnosed with other neurological emergency conditions, the study states.
Kategorier: Hjernen

Infection with Wolbachia bacteria curbs fighting among fruit flies

tor, 07/02/2015 - 21:11
Male fruit flies infected with the bacterium, Wolbachia, are less aggressive than those not infected, according to research. This is the first time bacteria have been shown to influence aggression.
Kategorier: Hjernen

Prion trials and tribulations: Finding the right tools and experimental models

tor, 07/02/2015 - 20:12
Prions are fascinating, enigmatic, and might teach us not only about rare prion diseases like Creutzfeld-Jakob disease, mad cow disease, or scrapie, but also about other more common neurodgenerative diseases. Two studies report progress with novel tools and paradigms to study prion disease.
Kategorier: Hjernen

Do you really think you're a foodie?

tor, 07/02/2015 - 19:22
Think you're a foodie? Adventurous eaters, known as 'foodies,' are often associated with indulgence and excess. However, a new study shows just the opposite -- adventurous eaters weigh less and may be healthier than their less-adventurous counterparts.
Kategorier: Hjernen

Long-term memories are maintained by prion-like proteins

tor, 07/02/2015 - 18:28
Researchers have uncovered further evidence of a system in the brain that persistently maintains memories for long periods of time.
Kategorier: Hjernen

Commonly prescribed drugs affect decisions to harm oneself and others

tor, 07/02/2015 - 18:23
Healthy people given the serotonin-enhancing antidepressant citalopram were willing to pay almost twice as much to prevent harm to themselves or others than those given placebo drugs in a moral decision-making experiment. In contrast, the dopamine-boosting Parkinson's drug levodopa made healthy people more selfish, eliminating an altruistic tendency to prefer harming themselves over others.
Kategorier: Hjernen

Can autism be measured in a sniff?

tor, 07/02/2015 - 18:22
Imagine the way you might smell a rose. You'd take a nice big sniff to breathe in the sweet but subtle floral scent. Upon walking into a public restroom, you'd likely do just the opposite -- abruptly limiting the flow of air through your nose. Now, researchers have found that people with autism spectrum disorder don't make this natural adjustment like other people do.
Kategorier: Hjernen

Water to understand the brain

tor, 07/02/2015 - 18:17
To observe the brain in action, scientists and physicians use imaging techniques, among which functional magnetic resonance imaging (fMRI) is the best known. These techniques are not based on direct observations of electric impulses from activated neurons, but on one of their consequences. Indeed, this stimulation triggers physiological modifications in the activated cerebral region, changes that become visible by imaging. Until now, it was believed that these differences were only due to modifications of the blood influx towards the cells. By using intrinsic optical signals (IOS) imaging, researchers have now demonstrated that, contrary to what was thought, another physiological variation is involved: the activated neurons swell due to the massive entry of water.
Kategorier: Hjernen

Bad sleep habits linked to higher self-control risks

tor, 07/02/2015 - 15:41
Poor sleep habits can have a negative effect on self-control, which presents risks to individuals' personal and professional lives, according to researchers. Psychologists concluded a sleep-deprived individual is at increased risk for succumbing to impulsive desires, inattentiveness and questionable decision-making.
Kategorier: Hjernen

Online reader comments can provide valuable feedback to news sites

tor, 07/02/2015 - 15:41
Researchers have found that editors and owners of news organizations may want to pay more attention to what their readers are saying about their news stories in order to better serve their consumers.
Kategorier: Hjernen

Intrusiveness of old emotional memories can be reduced by computer game play procedure

tor, 07/02/2015 - 14:49
Unwanted, intrusive visual memories are a core feature of stress- and trauma-related clinical disorders such as posttraumatic stress disorder (PTSD), but they can also crop up in everyday life. New research shows that even once intrusive memories have been laid down, playing a visually-demanding computer game after reactivating the memories may reduce their occurrence over time.
Kategorier: Hjernen

Traders' hormones' may destabilize financial markets

tor, 07/02/2015 - 14:49
The hormones testosterone and cortisol may destabilize financial markets by making traders take more risks, according to a study.
Kategorier: Hjernen

Puccini’s ‘exotic inspiration’:Unusual source of Madam Butterfly's melodies revealed

tor, 07/02/2015 - 12:39
The unexpected source of two of the most significant musical themes in Puccini’s masterwork Madama Butterfly has been revealed by an American music scholar.
Kategorier: Hjernen

New epigenetic mechanism revealed in brain cells

ons, 07/01/2015 - 19:06
For decades, researchers in the genetics field have theorized that the protein spools around which DNA is wound, histones, remain constant in the brain, never changing after development in the womb. Researchers have now discovered that histones are steadily replaced in brain cells throughout life.
Kategorier: Hjernen

Brain activity predicts promiscuity and problem drinking

ons, 07/01/2015 - 18:33
A new pair of brain-imaging studies suggest that researchers may be able to predict how likely young adults are to develop problem drinking or risky sexual behavior in response to stress. The research is part of the ongoing Duke Neurogenetics Study or DNS, which began in 2010 to better understand how interactions between the brain, genome, and environment shape risky behaviors predicting mental illnesses including depression, anxiety, and addiction.
Kategorier: Hjernen

Human-like 'eye' in single-celled plankton: Mitochondria, plastids evolved together

ons, 07/01/2015 - 18:33
Scientists have peered into the eye-like structure of single-celled marine plankton called warnowiids and found it contains many of the components of a complex eye.
Kategorier: Hjernen

Humans evolved to be taller and faster-thinking, study suggests

ons, 07/01/2015 - 18:33
People have evolved to be smarter and taller than their predecessors, a study of populations around the world suggests.
Kategorier: Hjernen