ScienceDaily: Nyt om Mind & Brain
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.
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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.
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.
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.
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.
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.
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.
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.
Researchers have uncovered further evidence of a system in the brain that persistently maintains memories for long periods of time.
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.
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.
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.
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.
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.
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.
The hormones testosterone and cortisol may destabilize financial markets by making traders take more risks, according to a study.
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.
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.
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.
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.
People have evolved to be smarter and taller than their predecessors, a study of populations around the world suggests.