Amygdala News and Research

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Newly formed emotional memories can be erased from the human brain

Newly formed emotional memories can be erased from the human brain. This is shown by researchers from Uppsala University in a new study now being published by the academic journal Science. The findings may represent a breakthrough in research on memory and fear.

21 Sep 2012

‘C’ variant disrupts brain connectivity in children with ASD

Over the past decade, researchers have made great strides in identifying genes that lead to an increased risk of autism spectrum disorders (ASD), which result in a continuum of social deficits, communication difficulties and cognitive delays. But it's still critical to determine how exactly these genetic risk factors impact the brain's structure and function so that better treatments and interventions can be developed.

15 Sep 2012

New links between ghrelin and brain cells involved in development of alcoholism

Researchers at The Scripps Research Institute have found new links between a protein that controls our urge to eat and brain cells involved in the development of alcoholism. The discovery points to new possibilities for designing drugs to treat alcoholism and other addictions.

14 Sep 2012

Genes predict the brain's reaction to smoking

Have you ever wondered why some people find it so much easier to stop smoking than others? New research shows that vulnerability to smoking addiction is shaped by our genes. A study from the Montreal Neurological Institute and Hospital - The Neuro, McGill University shows that people with genetically fast nicotine metabolism have a significantly greater brain response to smoking cues than those with slow nicotine metabolism.

12 Sep 2012

Specific white matter connectivity reduced in anxiety patients

Patients with generalized anxiety disorder have reduced functional connectivity between areas of the brain associated with fight-or-flight response and emotion regulation, researchers report.

11 Sep 2012

Soy-rich diet can mitigate effects of bisphenol A

New research led by researchers at North Carolina State University shows that exposure to the chemical bisphenol A (BPA) early in life results in high levels of anxiety by causing significant gene expression changes in a specific region of the brain called the amygdala. The researchers also found that a soy-rich diet can mitigate these effects.

10 Sep 2012

People with generalized anxiety disorder have weak brain connections

A new University of Wisconsin-Madison imaging study shows the brains of people with generalized anxiety disorder (GAD) have weaker connections between a brain structure that controls emotional response and the amygdala, which suggests the brain's "panic button" may stay on due to lack of regulation.

5 Sep 2012

People with normal blood sugar range may be at increased risk of brain shrinkage

People whose blood sugar is on the high end of the normal range may be at greater risk of brain shrinkage that occurs with aging and diseases such as dementia, according to new research published in the September 4, 2012, print issue of Neurology-, the medical journal of the American Academy of Neurology.

4 Sep 2012

Prenatal exposure to maternal cigarette smoking may promote obesity in adolescents

Prenatal exposure to maternal cigarette smoking appears associated with an increased risk for adolescent obesity, and is possibly related to subtle structural variations in the brain that create a preference for eating fatty foods, according to a report published Online First by Archives of General Psychiatry, a JAMA Network publication.

4 Sep 2012

Febrile seizures increase hippocampal injury risk

Children with febrile status epilepticus are at risk for hippocampal injury and show abnormalities in the development of this brain area, show findings from a prospective multicenter study.

16 Aug 2012

Frontal-amygdala connectivity alterations in BDI patients

Results from a US study suggest there is dysfunction in the neural networks responsible for emotion regulation among patients with bipolar I disorder, even during periods of euthymia.

9 Aug 2012

Brain response to emotion altered in BD youth

Results from a US study show that adolescents with bipolar disorder (BD) have altered activation in certain brain regions in response to facial expressions of emotion.

25 Jul 2012

Mice have different neural subsystem associated with instinctually important smells

A new study finds that mice have a distinct neural subsystem that links the nose to the brain and is associated with instinctually important smells such as those emitted by predators. That insight, published online this week in Proceedings of the National Academy of Sciences, prompts the question whether mice and other mammals have specially hardwired neural circuitry to trigger instinctive behavior in response to certain smells.

25 Jul 2012

Reward-related decision making may be affected by the emotional processing system

Anxiety disorders affect approximately 40 million American adults each year, and although they are treatable, they often cause significant distress.

23 Jul 2012

Study on relationship between pain and higher brain functions

University of Texas Medical Branch at Galveston professor Volker Neugebauer has been awarded a four-year, $1.36 million grant by the National Institute of Neurological Disorders and Stroke to conduct an innovative study of the relationship between pain and parts of the brain associated with cognitive thought and emotional response.

20 Jul 2012

BD II patients show altered brain activity during emotion processing

Depressed patients with bipolar II disorder show reduced activation and altered connectivity in brain regions associated with working memory and emotional learning, US researchers report.

18 Jul 2012

Dynorphin plays an important role in weakening anxiety

Feelings of anxiety very effectively prevent people from getting into situations that are too dangerous. Those who have had a terrible experience initially tend to avoid the place of tragedy out of fear. If no other oppressive situation arises, normally the symptoms of fear gradually subside.

7 Jul 2012

Amygdala volume reduced in schizophrenia, not psychotic BD

Amygdala volume is reduced in patients with schizophrenia compared with those who have psychotic bipolar disorder, researchers report.

22 Jun 2012

Experimental drug and genetic differences indicate how people deal with fear and stress

Researchers at Duke University and the National Institutes of Health have found a way to calm the fears of anxious mice with a drug that alters their brain chemistry. They've also found that human genetic differences related to the same brain chemistry influence how well people cope with fear and stress.

12 Jun 2012

Sleep loss markedly exaggerates emotional reactivity in people with anxiety disorders

New research shows that sleep loss markedly exaggerates the degree to which we anticipate impending emotional events, particularly among highly anxious people, who are especially vulnerable.

11 Jun 2012