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Latest Amygdala Stories

2010-02-11 11:51:38

People with generalized anxiety disorder, or GAD, have abnormalities in the way their brain unconsciously controls emotions. That's the conclusion of a new Stanford University School of Medicine study, and the study authors say the findings could open up new avenues for treatments and change our understanding of how emotion is regulated in everyday life. The work is published online in this month's American Journal of Psychiatry. According to the National Institute of Mental Health, 18...

2010-02-08 15:53:57

Two patients with rare lesions to the brain have provided direct of evidence of how we make decisions "“ and what makes us dislike the thought of losing money. Researchers at the California Institute of Technology studied a phenomenon known as 'loss aversion' in two patients with lesions to the amygdala, a region deep within the brain involved in emotions and decision-making. The results of the study, part-funded by the Wellcome Trust, are published today in the journal Proceedings of...

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2010-02-08 15:25:00

Neuroscientists at the California Institute of Technology (Caltech) and their colleagues have tied the human aversion to losing money to a specific structure in the brain"“the amygdala. The finding, described in the latest online issue of the journal Proceedings of the National Academy of Sciences (PNAS), offers insight into economic behavior, and also into the role of the brain's amygdalae, two almond-shaped clusters of tissue located in the medial temporal lobes. The amygdala...

2010-01-27 16:26:15

A new study demonstrates that cooperation between the hippocampus, best known for its critical role in learning and memory, and a principal downstream cortical target modulates anxiety-related behaviors in mice. The research, published by Cell Press in the January 28th issue of the journal Neuron, provides intriguing insight into how anxiety is processed in the brain and may help to explain what governs anxiety-related behaviors. Recent research has linked a specific region of the...

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2010-01-27 14:41:56

Draw a map of the brain when fear and anxiety are involved, and the amygdala"”the brain's almond-shaped center for panic and fight-or-flight responses"”looms large. But the amygdala doesn't do its job alone. Scientists at Emory University have recently built upon work from others, extending the fear map to part of the brain known as the prelimbic cortex. Researchers led by Kerry Ressler, MD, PhD, found that mice lacking a critical growth factor in the prelimbic cortex have trouble...

2009-11-25 15:07:08

The portion of our brains that is responsible for registering fear and even panic has a built-in chemical sensor that is triggered by a primordial terror "“ suffocation. A report in the November 25th issue of the journal Cell, a Cell Press publication, shows in studies of mice that the rise in acid levels in the brain upon breathing carbon dioxide triggers acid-sensing channels that evoke fear behavior. In addition to the insight into the normal fear response, the discovery may help to...

2009-11-25 14:50:32

Breathing carbon dioxide can trigger panic attacks, but the biological reason for this effect has not been understood. A new study by University of Iowa researchers shows that carbon dioxide increases brain acidity, which in turn activates a brain protein that plays an important role in fear and anxiety behavior. The study, published in the Nov. 25 issue of the journal Cell, offers new possibilities for understanding the biological basis of panic and anxiety disorders in general and may...

2009-11-17 14:01:31

Parents have long suspected that the brains of their teenagers function differently than those of adults. With the advent of magnetic resonance imaging, or MRI, we have begun to appreciate how the brain continues to develop structurally through adolescence and on into adulthood. High emotionality is a characteristic of adolescents and researchers are trying to understand how "Ëœemotional areas' of the brain differ between adults and adolescents.Scientists from the National Institute...

2009-10-26 22:35:28

Mother-child attachments in animals and possible parallels in people When do you first leave the nest? Early in development infants of many species experience important transitions"”such as learning when to leave the protective presence of their mother to start exploring the wider world. Neuroscientists have now pinpointed molecular events occurring in the brain during that turning point. Based on animal studies, the findings may shed light on the strength of attachments in many...

2009-10-21 13:02:16

Researchers have discovered that a primitive region of the brain responsible for sensorimotor control also has an important role in regulating emotional responses to threatening situations. This region appears to work in concert with another structure called the amygdala to regulate social and emotional behavior. Georgetown University Medical Center researchers have recently discovered that activation of a primitive brain region, the deep layers of superior colliculus (DLSC), elicits...


Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
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