Quantcast

Latest Amygdala Stories

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...

a9b4a8c1cda6f59641494ea088e4ef2a
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...

0c83f56b6fa10fe7e56e1d91baee2f371
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...

9fc47f641917e93c7860d4b07605e58c1
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...

2008-07-14 12:00:40

MILWAUKEE _ Anxious individuals may be hard-wired in childhood to be tense, nervous and prone to depression, new research suggests. University of Wisconsin-Madison researchers have discovered the part of the brain linked to anxiety in young monkeys, a finding that could help our understanding of the neural basis of temperament in human children as well. "They were able to link behavioral traits related to anxiety with strong and stable activity of a central circuit of brain area," said...

336f9f66a7fa5d312164da0a86432e00
2008-07-10 15:00:00

Learned fear is triggered by a rapid switching in the activity balance between two brain circuits, a Swiss study published Thursday found. Adjusting the balance either retains or eliminates fear, said the study by researchers from the University of Basel in Switzerland. The researchers, led by Andreas Luethi, found two distinct groups of nerve cells in a part of the brain called the amygdala, which processes memory of emotional reactions. One group of nerve cells eliminates established...

f2646ae7d3428a092d723ca7cbbe59771
2008-05-21 13:06:39

The brain centers triggered by a betrayal of trust have been identified by researchers, who found they could suppress such triggering and maintain trust by administering the brain chemical oxytocin. The researchers said their findings not only offer basic insights into the neural machinery underlying trust; the results may also help in understanding the neural basis of social disorders such as phobias and autism. Thomas Baumgartner and colleagues published their findings in the May 22, 2008,...


Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'