Limbic System News and Research

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New insight into why some individuals may be more aggressive than others

Fluctuations of serotonin levels in the brain, which often occur when someone hasn't eaten or is stressed, affects brain regions that enable people to regulate anger, new research from the University of Cambridge has shown.

16 Sep 2011

Scientists discover two opposing neuronal regulatory circuits for generation, elimination of fear

Emotional balance is regulated by molecular factors behind stress response. When healthy people are faced with threatening situations, they react with a suitable behavioural response and do not descend into a state of either panic or indifference, as is the case, for example, with patients who suffer from anxiety.

7 Sep 2011

Meditation appears to change brain anatomy: Study

Two years ago, researchers at UCLA found that specific regions in the brains of long-term meditators were larger and had more gray matter than the brains of individuals in a control group. This suggested that meditation may indeed be good for all of us since, alas, our brains shrink naturally with age.

15 Jul 2011

Amygdala predicts spontaneous behavior: Study

A pianist is playing an unknown melody freely without reading from a musical score. How does the listener's brain recognise if this melody is improvised or if it is memorized? Researchers at the Max Planck Institute for Human Cognitive and Brain Sciences in Leipzig investigated jazz musicians to discover which brain areas are especially sensitive to features of improvised behaviour.

4 May 2011

Toddlers having insecure emotional relationship with mothers at increased risk for obesity

Toddlers who do not have a secure emotional relationship with their parents, and particularly their mothers, could be at increased risk for obesity by age 4 ½, according to new research.

21 Apr 2011

The neuroscience of musical chills

Scientists have found that the pleasurable experience of listening to music releases dopamine, a neurotransmitter in the brain important for more tangible pleasures associated with rewards such as food, drugs and sex. The new study from The Montreal Neurological Institute and Hospital - The Neuro at McGill University also reveals that even the anticipation of pleasurable music induces dopamine release [as is the case with food, drug, and sex cues].

13 Jan 2011

Sleep plays a crucial role in post-infarction remission

The heart and the brain appear to be even more closely connected than previously imagined. The damaging effects of myocardial infarction are apparently not confined to the heart, but also affect the brain.

2 Dec 2010

Brain regions play a fundamental role in empathetic and violent situations

"Just as our species could be considered the most violent, since we are capable of serial killings, genocide and other atrocities, we are also the most empathetic species, which would seem to be the other side of the coin", Luis Moya Albiol, lead author of the study and a researcher at the UV, tells SINC.

15 Apr 2010

Deep brain stimulation can help patients with severe forms of depression

In deep brain stimulation, doctors specifically target the impaired function of certain areas of the brain with an electric brain pacemaker. For the purpose of this study, they implanted electrodes in what is known as the nucleus accumbens. That is an important part of the 'reward system' which ensures that we remember good experiences and puts us in a state of pleasant anticipation.

2 Nov 2009

Researchers aim to determine if specific brain circuits and pathways might be responsible for wisdom

Researchers at the University of California, San Diego School of Medicine have compiled the first-ever review of the neurobiology of wisdom – once the sole province of religion and philosophy.

6 Apr 2009

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

COMT gene variation affects fear processing, anxiety

Inborn differences may help explain why trauma gives some people bad memories and others the nightmare of post-traumatic stress. Scientists in Germany and the United States have reported evidence linking genes to anxious behavior. The findings appear in the August issue of Behavioral Neuroscience, published by the American Psychological Association.

10 Aug 2008

New insight into maternal love

The distinctive ability of mothers to identify the cries of their offspring is widely evident in nature, where it is critical to the survival of these offspring.

28 Feb 2008

Deep brain stimulation may improve memory

Deep brain stimulation (DBS) surgery, which is used to treat Parkinson's disease and other movement disorders, is now being studied for its potential to treat a variety of conditions.

4 Feb 2008

Subconscious signals can trigger drug craving

Using a brain imaging technology called functional magnetic resonance imaging (fMRI), scientists have discovered that cocaine-related images trigger the emotional centers of the brains of patients addicted to drugs even when the subjects are unaware they've seen anything.

4 Feb 2008

Study shows how men and women differ in their neural responses to psychological stress

According to a study that appears in the current issue of SCAN (Social Cognitive and Affective Neuroscience), researchers at the University of Pennsylvania School of Medicine discuss how men and women differ in their neural responses to psychological stress.

20 Nov 2007

ADHD linked to depressed dopamine activity in the brain

Adults with attention-deficit/hyperactivity disorder (ADHD) show a blunted response to the drug methylphenidate (Ritalin), which increases brain dopamine levels, according to a report in the August issue of Archives of General Psychiatry, one of the JAMA/Archives journals.

7 Aug 2007

Tinnitus retraining therapy

It is estimated that between 10 and 17% of the population has suffered tinnitus at some time in their lives, according to a number of international studies.

27 Jun 2007

Depression linked with a specific autoantibody and central nervous system dysfunction in lupus

Systemic lupus erythomatosus (SLE), often simply called lupus, is a complex autoimmune disease marked by joint pain, skin rashes, extreme fatigue, and depression, among other symptoms.

27 Feb 2007

Face perception is mediated by a distributed neural system in the human brain

New research indicates that an area of the brain thought to act in reward circuitry may represent a phase in visual processing during which sexual orientation modulates how we perceive individual faces. The findings are reported by Felicitas Kranz and Alumit Ishai of the University of Zurich.

11 Jan 2006