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Fight to let transgender soldiers serve A recent report concludes that the policy banning transgender people from serving in the U.S. armed forces should be ended, arguing there is "no compelling medical reason for the ban."
What role do sibling struggles play in adult relationships? Sibling relationships play a major role in choices children make relating to friends and will affect the type of relationships they create throughout their lives.
You can predict 'the marrying type' A new study looks at how attractiveness, personality, and grooming influence the likelihood that someone will get married.
Mexican-Americans suffer worse outcomes after stroke Mexican-Americans had worse neurologic, functional and cognitive outcomes 90 days after their stroke compared to non-Hispanic whites. Mexican-American stroke survivors had moderate functional disability and nearly one-third had post-stroke dementia.
Halting immune response could save brain cells after stroke A new study in animals shows that using a compound to block the body's immune response greatly reduces disability after a stroke. The study also showed that particular immune cells -- CD4+ T-cells produce a mediator, called interleukin (IL) -21 that can cause further damage in stroke tissue. Moreover, normal mice, ordinarily killed or disabled by an ischemic stroke, were given a shot of a compound that blocks the action of IL-21. Brain scans and brain sections showed that the treated mice suffered little or no stroke damage.
5 Pitfalls of Positive Thinking Our culture exhorts us to "go for it," to ignore obstacles and setbacks, and to think that every cloud has a silver lining. But is positive thinking getting us where we need to go? The answer may surprise you.read more
Five Pitfalls of Positive Thinking Our culture exhorts to "go for it," to ignore obstacles and setbacks, and to think that every cloud has a silver lining. But is positive thinking getting us where we need to go? The answer may surprise you.read more
We must forget to avoid serious mental disorders, and forgetting is actively regulated In order to function properly, the human brain requires the ability not only to store but also to forget: Through memory loss, unnecessary information is deleted and the nervous system retains its plasticity. A disruption of this process can lead to serious mental disorders. Scientists have now discovered a molecular mechanism that actively regulates the process of forgetting.
Scientists catch brain damage in the act Scientists have uncovered how inflammation and lack of oxygen conspire to cause brain damage in conditions such as stroke and Alzheimer's disease, bringing researchers a step closer to finding potential targets to treat neurodegenerative disorders. Chronic inflammation and hypoxia, or oxygen deficiency, are hallmarks of several brain diseases, but little has been known about how they contribute to symptoms such as memory loss.
Neuroscientists forge path toward understanding human brain Metastable dynamics – a subtle blend of integration and segregation in the brain that occurs on multiple levels (cells, brain regions, networks) – underlies the real-time coordination necessary for the brain's dynamic cognitive, behavioral and social functions, neuroscientists have found.
Brain scans are fascinating but behaviour tells us more about the mind | Catherine Loveday Catherine Loveday: Cognitive profiling helps us to understand the nature of specific brain disorders
What happened when? How the brain stores memories by time New research shows that a part of the brain called the hippocampus stores memories by their "temporal context" -- what happened before, and what came after -- and not by content. From brain scans of the hippocampus as the volunteers were answering questions in this study, researchers could identify patterns of activity specific to each image. But when they showed the volunteers the same images in a different sequence, they got different patterns of activity. In other words, the coding of the memory in the hippocampus was dependent on its context, not just on content.
A brain signal for psychosis risk Only one third of individuals identified as being at clinical high risk for psychosis actually convert to a psychotic disorder within a three-year follow-up period. This risk assessment is based on the presence of sub-threshold psychotic-like symptoms. Thus, clinical symptom criteria alone do not predict future psychosis risk with sufficient accuracy to justify aggressive early intervention, especially with medications such as antipsychotics that produce significant side effects.
Growing old stressfully: chronic stress and prematurely aged cells | James Kingsland James Kingsland: Apparently healthy older men who have poor social support networks and abnormal physiological responses to stress show signs of accelerated cell ageing James Kingsland
Is Nonviolence Effective? The evidence for the effectiveness of nonviolent resistance is mounting. In the past 100 years, nonviolent campaigns were nearly twice as likely to achieve full or partial success as were violent campaigns and the advantage for violent campaigns held even when controlling for the authoritarianism of the regime.read more
Estradiol preserves key brain regions in postmenopausal women at risk for dementia When initiated soon after menopause, hormone therapy with estradiol prevented degeneration in key brain regions of women who were at heightened dementia risk, according to a new study. The investigators also found that another type of hormone therapy, marketed under the brand name Premarin, was far less protective. Premarin is a mixture of 30-plus substances derived from the urine of pregnant mares. Estradiol -- the dominant sex-steroid hormone in woman -- accounts for about 17 percent of Premarin's total content. Other Premarin components exert various endocrinological effects on different tissues.
High mortality from Alzheimer's disease A new study has suggested that Alzheimer's disease causes six times as many deaths as the official statistics would indicate.
Emotions vented online are contagious Research shows feelings posted on Facebook can spread to others.
New rehabilitation methods for amputees, stroke patients developed When use of a dominant hand is lost by amputation or stroke, a patient is forced to compensate by using the nondominant hand exclusively for precision tasks like writing or drawing. Presently, the behavioral and neurological effects of chronic, forced use of the nondominant hand are largely understudied and unknown. Now, researchers have shed light on how a patient compensates when losing a dominant hand and suggest improved rehabilitation techniques for those suffering from amputation or stroke.
Nicotine withdrawal weakens brain connections tied to self-control over cigarette cravings A new brain imaging study shows how smokers suffering from nicotine withdrawal may have more trouble shifting from a key brain network"”known as default mode, when people are in a so-called "introspective" state -"” and into a control network that could help exert more conscious, self-control over cravings and to focus on quitting for good.