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Last updated on April 16, 2014 at 17:34 EDT

Latest Amygdala Stories

2009-04-29 08:33:56

Disrupting a brain protein produces antidepressant-like effect in mice A brain protein involved in fear behavior and anxiety may represent a new target for depression therapies, according to a study by researchers at the University of Iowa and the Iowa City Veterans Affairs Medical Center. The results appear in the April 29 issue of the Journal of Neuroscience. Depression affects at least 14 million American adults and can be severely disabling. However, the causes of depression are not well...

2009-04-02 20:50:46

Women who had been depressed have different brain patterns than the never-depressed when hearing a mother's criticism, U.S. researchers said. Study leader Jill Hooley of Harvard University in Boston said formerly depressed women show patterns of brain activity when they are criticized by their mothers that are distinctly different from the patterns shown by never-depressed controls. The study, published in Psychiatry Research: Neuroimaging, had 23 female participants -- 12 who had no history...

2009-03-09 13:28:33

U.S. neuroscientists say they have identified the brain's neural systems that are involved in forming first impressions of people. The New York University and Harvard University researchers say their findings show how we encode social information and then evaluate it in making such initial judgments. The scientists said they sought to investigate the brain mechanisms that give rise to impressions formed immediately after meeting a new person. They designed an experiment in which they used...

2009-01-13 10:48:31

Findings could have implications for brain alterations associated with autism For the first time, scientists at Children's National Medical Center have successfully identified a key developmental program for the amygdala"”the part of the limbic system that impacts how the brain creates emotional memories and responses. This knowledge could help scientists to better understand autism and similar disorders in which altered function of this region is known to occur. The findings, published...

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2009-01-02 10:45:00

A network of emotion-regulating brain regions implicated in the pathological worry that can grip patients with anxiety disorders may also be useful for predicting the benefits of treatment. A new study appearing online Jan. 2 reports that high levels of brain activity in an emotional center called the amygdala reflect patients' hypersensitivity to anticipation of adverse events. At the same time, high activity in a regulatory region known as the anterior cingulate cortex is associated with a...

2008-12-25 22:23:10

There's a scientific reason why older people tend to see the past through rose-colored glasses, Canadian researchers suggest -- negative memories tend to fade. Study author Dr. Florin Dolcos of the University of Alberta in collaboration with colleagues at Duke University in Durham, N.C., identified brain activity that causes older adults to remember fewer negative events than their younger counterparts. The researchers asked older and younger participants to rate the emotional content of...

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2008-12-03 10:50:00

It is a well-known fact in drug trials that individuals can respond just as well to placebos, sugar pills, as to the active drug. On the other hand, it is difficult to explain why only certain people get better from placebos. A team of researchers from Uppsala University and Gothenburg University have now found gene variants that can impact the placebo effect and a mechanism in the brain that characterizes those who respond to placebos.The study, published in Journal of Neuroscience, examined...

2008-11-19 09:10:00

Doctors are finding promising effects from a drug that could make stress disappear. In a small test on rats that were put under stressful conditions, researchers found exposing them to a small dose of muscimol -- a drug that temporarily inactivates the amygdala region of the brain -- eliminated the effects of stress completely. "It was as if the experience had never happened to them," Lauren Jones, a University of Washington psychology doctoral student, was quoted as saying. "Inactivation of...

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2008-11-07 13:25:00

Abnormally aggressive teens may in fact take pleasure in causing pain in others, investigations using brain scans at the University of Chicago indicate. "This is the first time that MRI scans have been used to study situations that could otherwise provoke empathy," said Jean Decety, Professor in Psychology and Psychiatry at the University of Chicago. "This work will help us better understand ways to work with juveniles inclined to aggression and violence." This may not be too shocking to...

2008-11-05 21:00:13

The brains of individuals with major depressive disorder appear to react more strongly when anticipating pain, U.S. researchers have found. Irina A. Strigo of the University of California-San Diego and colleagues studied 15 young adults with major depressive disorder, who were not taking medication and 15 individuals who were the same age -- average 24.3 years -- and had the same education level but did not have depression. Patients with depression completed a questionnaire that evaluated...