Latest Amygdala Stories

2008-11-19 09:10:00

Doctors are finding promising effects from a drug that could make stress disappear. In a small test on rats that were put under stressful conditions, researchers found exposing them to a small dose of muscimol -- a drug that temporarily inactivates the amygdala region of the brain -- eliminated the effects of stress completely. "It was as if the experience had never happened to them," Lauren Jones, a University of Washington psychology doctoral student, was quoted as saying. "Inactivation of...

2008-11-07 13:25:00

Abnormally aggressive teens may in fact take pleasure in causing pain in others, investigations using brain scans at the University of Chicago indicate. "This is the first time that MRI scans have been used to study situations that could otherwise provoke empathy," said Jean Decety, Professor in Psychology and Psychiatry at the University of Chicago. "This work will help us better understand ways to work with juveniles inclined to aggression and violence." This may not be too shocking to...

2008-11-05 21:00:13

The brains of individuals with major depressive disorder appear to react more strongly when anticipating pain, U.S. researchers have found. Irina A. Strigo of the University of California-San Diego and colleagues studied 15 young adults with major depressive disorder, who were not taking medication and 15 individuals who were the same age -- average 24.3 years -- and had the same education level but did not have depression. Patients with depression completed a questionnaire that evaluated...

2008-07-14 12:00:40

MILWAUKEE _ Anxious individuals may be hard-wired in childhood to be tense, nervous and prone to depression, new research suggests. University of Wisconsin-Madison researchers have discovered the part of the brain linked to anxiety in young monkeys, a finding that could help our understanding of the neural basis of temperament in human children as well. "They were able to link behavioral traits related to anxiety with strong and stable activity of a central circuit of brain area," said...

2008-07-10 15:00:00

Learned fear is triggered by a rapid switching in the activity balance between two brain circuits, a Swiss study published Thursday found. Adjusting the balance either retains or eliminates fear, said the study by researchers from the University of Basel in Switzerland. The researchers, led by Andreas Luethi, found two distinct groups of nerve cells in a part of the brain called the amygdala, which processes memory of emotional reactions. One group of nerve cells eliminates established...

2008-05-21 13:06:39

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. Thomas Baumgartner and colleagues published their findings in the May 22, 2008,...

2008-02-07 00:45:00

Very young brains process memories of fear differently than more mature ones, new research indicates. The findings appear in the Feb. 6 issue of The Journal of Neuroscience. The work significantly advances scientific understanding of when and how fear is stored and unlearned, and introduces new thinking on the implications of fear experience early in life."This important paper raises questions that are the "Ëœtip of the iceberg' related to the very complex series of events that...

2008-01-09 14:55:00

Brain-imaging study may explain why some continue to eat, despite full stomachs UPTON, NY -- Researchers at the U.S. Department of Energy's Brookhaven National Laboratory have found new clues to why some people overeat and gain weight while others don't. Examining how the human brain responds to "satiety" messages delivered when the stomach is in various stages of fullness, the scientists have identified brain circuits that motivate the desire to overeat. Treatments that target these circuits...

2007-11-29 06:00:00

While some sex differences are still up for debate, one that's hard to argue away is men's greater fondness for pornography. Over the years I've heard men explain this in various ways. One of the most popular is that men are "more visual" than women, a convenient excuse for ogling at the beach. Is there any science behind this? "More visual" is too vague to investigate, but some studies have offered insight about why men consume most of the world's vast store of Internet porn....

2006-12-19 08:49:31

WASHINGTON -- The closer New Yorkers were to the World Trade Center on Sept. 11, 2001, the more vivid their memories are of the disaster that brought down the buildings. For people close to the scene, memory of the event involves an emotion-recording portion of the brain, while those who were farther away involved other parts of the brain in the recollection, researchers report in Tuesday's issue of Proceedings of the National Academy of Sciences. All of the 24 participants in the study were...

Word of the Day
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'