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Latest Amygdala Stories

2010-06-08 12:30:24

Researchers at India's National Centre for Biological Sciences (NCBS) and New York University's Center for Neural Science have identified novel synaptic defects in an area of the brain that is involved in the debilitating emotional symptoms of Fragile X Syndrome (FXS). FXS is the leading known genetic cause of autism and mental retardation. The study, which appears in the journal the Proceedings of the National Academy of Sciences, is also of potential therapeutic significance"”it...

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2010-05-17 13:21:48

Fish become feisty but fearful when facing themselves in a mirror, according to two Stanford biologists. "It seems like something they don't understand," said Julie Desjardins, a post-doctoral researcher in biology and lead author of a paper to be published in Biology Letters describing the study. The paper is available online now. "I think this stimulus is just so far outside their realm of experience that it results in this somewhat emotional response." Desjardins and coauthor Russell...

2010-04-29 14:40:27

The neuropeptide oxytocin makes it easier to feel for other people 48 healthy males participated in the experiment. Half received an oxytocin nose spray at the start of the experiment, the other half a placebo. The researchers then showed their test subjects photos of emotionally charged situations in the form of a crying child, a girl hugging her cat, and a grieving man. The test subjects were then invited to express the depth of feeling they experienced for the persons shown. In summary,...

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2010-04-03 08:54:07

The brain is capable of holding and retrieving memories for specific fears, revealing a more sophisticated storage and recall capacity than previously thought, neuroscientists have found. The study, which appears in the journal Nature Neuroscience, may have implications for treating post-traumatic stress syndrome"”as scientists begin to understand how different fears are stored in the brain, they can move toward addressing specific fear memories. The research was conducted by...

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...


Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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