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.
Opdateret: 2 hours 48 min siden
Decreased ability to identify odors can predict death: Olfactory dysfunction is a harbinger of mortality
The inability of older adults to identify scents is a strong predictor of death within five years. Almost 40% of those who failed a smelling test died during that period, compared to 10% of those with a healthy sense of smell. Olfactory dysfunction predicted mortality better than a diagnosis of heart failure or cancer.
Though it seems simple, feeling that something is wet is quite a feat because our skin does not have receptors that sense wetness. UK researchers propose that wetness perception is intertwined with our ability to sense cold temperature and tactile sensations such as pressure and texture.
Relational aggression, or 'mean girl' bullying, is a popular subject in news and entertainment media. This nonphysical form of aggression generally used among adolescent girls includes gossiping, rumor spreading, exclusion and rejection. As media coverage has illustrated, relational aggression can lead to tragic and sometimes fatal outcomes. Researchers have now developed and tested an intervention that effectively decreases relational aggression among teen girls.
If a person is dually diagnosed with a severe mental illness and a substance abuse problem, are improvements in their mental health or in their substance abuse most likely to reduce the risk of future violence? A new study suggests that reducing substance abuse has a greater influence in reducing violent acts by patients with severe mental illness.
People who are unable to button up their jacket or who find it difficult to insert a key in lock suffer from a condition known as apraxia. This means that their motor skills have been impaired -- as a result of a stroke, for instance. Scientists have now discovered that there is a specific network in the brain for using tools.
New insights into botulinum neurotoxins and their interactions with cells are moving scientists ever closer to safer forms of Botox and a better understanding of the dangerous disease known as botulism. By comparing all known structures of botulinum neurotoxins, researchers suggest new ways to improve the safety and efficacy of Botox injections.
A major medical discovery could lead to the development of an entirely new type of painkiller, scientists suggest. The new drug would offer new hope to sufferers of chronic pain conditions such as traumatic nerve injury, for which few effective painkillers are currently available, they say.
In patients older than 50 years with moderate or severe chronic knee pain, acupuncture did not provide any benefit, a study has concluded. Acupuncture is the most popular of alternative medical systems. Although traditionally administered with needles, laser acupuncture (low-intensity laser therapy to acupuncture points) is a non-invasive alternative with evidence of benefit in some pain conditions.
Cyberbullying and hurtful "fat jokes" are disturbingly prevalent in the social media environment, especially on Twitter, says the lead author of a study that analyzed well over a million social media posts and comments about weight matters. However, the researchers were also happy to find that the news was not all bad: many instances of support and advice were also observed, especially on blogs and forums.
Here’s another reason why it’s a good idea to hit the gym: it can improve memory. A new study shows that an intense workout of as little as 20 minutes can enhance episodic memory, also known as long-term memory for previous events, by about 10 percent in healthy young adults.
A new study sheds light on how some collegiate student-athletes deal with uncertainties ranging from excelling in both school and sports to their career prospects outside of athletics, and urges university athletic programs to adopt new efforts to support student-athletes.
Psychiatry researchers have developed a model that could help to predict a patient's likelihood of a good outcome from treatment -- from their very first psychotic episode.
The adage that encourages people to keep their 'eyes on the prize' may be on target when it comes to exercise. When walking, staying focused on a specific target ahead can make the distance to it appear shorter and help people walk there faster, psychology researchers have found.
When appointing a new leader, selectors base their choice on several factors and typically look for leaders with desirable characteristics such as honesty and trustworthiness. However once leaders are in power, can we trust them to exercise it in a prosocial manner? New research looked to discover whether power corrupts leaders.
Patients with increased inflammation, including those receiving cytokines for medical treatment, have a greatly increased risk of depression. For example, a 6-month treatment course of interferon-alpha therapy for chronic hepatitis C virus infection causes depression in approximately 30% of patients. Omega-3 fatty acids have a long list of health benefits, including lowering the risk of heart disease and reducing triglyceride levels. These nutritional compounds are also known to have anti-depressant and anti-inflammatory properties.
Some people who are prone to hostility, anxiety and depression might also be hard-wired to gain weight when exposed to chronic stress, leading to diabetes and heart disease, a new genetic finding suggests. An estimated 13 percent of people, all of whom are Caucasian, might carry the genetic susceptibility, and knowing this could help them reduce heart disease with simple interventions such as a healthy diet, exercise and stress management.
The first large-scale study in the U.S. to investigate at-home oral care for adults with developmental disabilities suggests that future policy initiatives should focus on improving sources of support for caregivers, in addition to addressing access to care.
The potential for doctors to measure damaging 'brain tsunamis' in injured patients without opening the skull has moved a step closer to reality, thanks to new pioneering research. The discovery has the potential to revolutionize bedside neuro-monitoring by enabling doctors to measure spreading depolarizations, which lead to worse outcomes, in patients who do not require surgery.
Lower social support is associated with poorer health and quality of life and more depressive symptoms in young men and women a year after having a heart attack. Social support is the perception of having friends or family who serve as confidants and companions, offer advice and information, show emotional concern, or provide financial or material support.
In the first months of life, when babies begin to distinguish sounds that make up language from all the other sounds in the world, they can be trained to more effectively recognize which sounds “might” be language, accelerating the development of the brain maps which are critical to language acquisition and processing, according to new research.