Amygdala News and Research

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Scientists uncover key developmental mechanisms of the amygdala

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.

13 Jan 2009

Expectant brains help predict anxiety treatment success

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.

5 Jan 2009

Researchers find brain's reward and stress signaling circuits are intertwined in complex ways

Vanderbilt University Medical Center investigators have now discovered a functional link between reward and stress. They found that dopamine - the brain's chief reward signal - works through corticotrophin-releasing factor (CRF) - the brain's main stress signal - to increase the activity of a brain region involved in addiction relapse.

16 Dec 2008

Why seniors forget negative events

It turns out there's a scientific reason why older people tend to see the past through rose-coloured glasses.

16 Dec 2008

Sarcasm - a diagnostic tool for dementia

Scientists say sarcasm, sometimes referred to as the lowest form of wit, might be a useful tool in diagnosing a certain type of dementia.

15 Dec 2008

Discovery of gene variants that impact the placebo effect

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.

3 Dec 2008

Stress found to impair decision making in rats

Neuroscientists from the University of Washington have found that a single exposure to uncontrollable stress impairs decision making in rats for several days, making them unable to reliably seek out the larger of two rewards.

18 Nov 2008

Bullies love to bully

The researchers from the University of Chicago used functional Magnetic Resonance Imaging (fMRI) scans of eight 16 to 18 year-old boys with aggressive conduct disorder and compared them to eight matched adolescents without conduct disorder.

9 Nov 2008

Brain scans show bullies may enjoy seeing others in pain

Unusually aggressive youth may actually enjoy inflicting pain on others, research using brain scans at the University of Chicago shows.

8 Nov 2008

MRI reveals relationship between depression and pain

The brains of individuals with major depressive disorder appear to react more strongly when anticipating pain and also display altered functioning of the neural network that modifies pain sensitivity, according to a report in the November issue of Archives of General Psychiatry , one of the JAMA/Archives journals.

4 Nov 2008

People with autism less influenced by gut instincts

People with autism-related disorders are less likely to make irrational decisions, and are less influenced by gut instincts, according to research funded by the Wellcome Trust. The study adds to the growing body of research implicating altered emotional processing in autism.

16 Oct 2008

Brain imaging study shows context and personality are both key in understanding our responses to emotional facial expressions

It is well appreciated that facial expressions play a major role in non-verbal social communication among humans and other primates, because faces provide rapid access to information about the identity as well as the internal states and intentions of others.

6 Aug 2008

Oxytocin may inhibit social phobia

Swedish and British scientists have shown using functional magnetic resonance imaging (fMRI) that the hormone oxytocin can inhibit feelings of anxiety in specific individuals. Their discovery might lead to a better understanding and the improved treatment of psychiatric affections in which people feel distressed when meeting others, such as in cases of autism and social phobia.

20 Jul 2008

Selective face processing abnormalities in parents of autistic children

Some parents of children with autism evaluate facial expressions differently than the rest of us - and in a way that is strikingly similar to autistic patients themselves, according to new research by psychiatrist Dr. Joe Piven of the University of North Carolina at Chapel Hill and neuroscientist Ralph Adolphs, Ph.D., of the California Institute of Technology.

17 Jul 2008

Researchers finds further evidence for genetic contribution to autism

Some parents of children with autism evaluate facial expressions differently than the rest of us--and in a way that is strikingly similar to autistic patients themselves, according to new research by neuroscientist Ralph Adolphs of the California Institute of Technology and psychiatrist Joe Piven at the University of North Carolina at Chapel Hill.

15 Jul 2008

Researchers identify brain cells related to fear - paves way for more effective PTSD treatments

The National Institute of Mental Health estimates that in any given year, about 40 million adults (18 or older) will suffer from some form of anxiety disorder, including debilitating conditions such as phobias, panic disorders and post-traumatic stress disorder (PTSD). It is estimated that nearly 15 percent of U.S. soldiers returning from Iraq and Afghanistan develop PTSD, underscoring the urgency to develop better treatment strategies for anxiety disorders.

10 Jul 2008

New research finds 'grumpy oldies' are having fun!

Australian researchers have found that there is a very strong possibility that youth really is wasted on the young.

17 Jun 2008

Long term dope use shrinks the brain

According to Australian researchers the long term use of marijuana may cause parts of the brain which control memory, emotion and aggression, to shrink.

3 Jun 2008

Long-term, heavy cannabis use may shrink brain's hippocampus and amygdala

Long-term, heavy cannabis use may be associated with structural abnormalities in areas of the brain known as the hippocampus and amygdala, according to a report in the June issue of Archives of General Psychiatry.

2 Jun 2008

New insights into the neural circuitry of trust

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.

21 May 2008