HOME >> MEDICINE >> NEWS
Scientists uncover new mechanism for the amygdala in fear recognition

A look of fear on another person's face is instantly recognizable. The split-second ability of the amygdala, a small, almond-shaped structure deep in the brain, distinguishes fear in facial expressions. In particular, the amygdala relies heavily on visual information contained in the eye region to detect fear.

A new study by scientists at the University of Iowa, the California Institute of Technology and their colleagues sheds more light on how the amygdala works. The study, published in the Jan. 6 issue of Nature, suggests that the mechanism by which the amygdala contributes to processing visual information about facial expressions is by actively directing a person's gaze to the eye region to seek out and fixate on the critical visual cues for fear.

"People often think of the brain as passively receiving information from the senses about the world. This study shows that there are mechanisms in the brain that allow us to actively seek out information in the environment in the first place," said Ralph Adolphs, Ph.D., UI adjunct professor of neurology and professor of psychology and neuroscience at the California Institute of Technology.

The study extends the group's decade-long investigation involving patients who are essentially unable to recognize fearful expressions because of a damaged amygdala. The current series of experiments showed that a particular patient fails to make use of information about the eyes in faces, and one reason for that is that she fails to look at the eyes in faces in the first place.

The researchers found that they could restore the patient's ability to distinguish fear in facial expressions to normal levels by specifically instructing her to look at the eye region. However, this instruction had to be given each time the patient viewed a face otherwise she resumed her abnormal gaze pattern, did not fixate on the eyes and was not able to discern fear.

The findings suggest that the amy
'"/>

Contact: Jennifer Brown
jennifer-l-brown@uiowa.edu
319-335-9917
University of Iowa
5-Jan-2005


Page: 1 2

Related medicine news :

1. Scientists replicate hepatitis C virus in laboratory
2. Scientists identify brain regions that decide where we look
3. Scientists identify protein critical to melanoma growth
4. Scientists discover recipe for life: eating the Polymeal cuts heart disease by 76%
5. Scientists study fish oil diet in bid to cut heart attack risks
6. Scientists discover enzyme crucial to the transportation of proteins within cells
7. Scientists turn on the gender lens on cardiovascular disease research
8. Scientists stalk PPAR-gamma, find novel cancer connection
9. Scientists align billion-year-old protein with embryonic heart defects
10. Scientists pinpoint flaw, offer new promise for stroke treatment
11. Scientists discover enzyme crucial to HIV replication

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/31/2020)... ... ... economic outlook continues to put financial strain on many of us, so it just makes ... monthly expenses and put more into savings, if possible. , “That’s a great way to ... in place in case something were to happen to you,” says Lee Duncan, CMO & ...
(Date:8/31/2020)... ... August 31, 2020 , ... In an effort to give back ... donating 10 percent of each hotel room booked with a special new rate code ... Northwest Indiana (RMHC-CNI) , effective immediately. Donations will be applied to any room ...
(Date:8/31/2020)... ... August 31, 2020 , ... Bonde Innovations, LLC, ... with advanced heart failure, today announced that the company has been awarded a ... from the National Heart, Lung, and Blood Institute of the National Institutes of ...
(Date:8/28/2020)... ... 28, 2020 , ... Ernst & Young LLP (EY US) ... Of The Year® 2020 Florida Award finalist. Now in its 34th year, the ... growth and prosperity as they build and sustain successful businesses that transform our ...
(Date:8/28/2020)... ... August 28, 2020 , ... The 15 scholarships being offered ... & Wellness mobile app and web-portal. NCPCV received a 2020 grant from Motorola ... each year to organizations, such as Destination Imagination, which support and advance public ...
Breaking Medicine News(10 mins):
(Date:8/26/2020)... ... August 26, 2020 , ... AseptiScope, a privately funded ... Company of the Year by MedTech Outlook. , “AseptiScope is pleased to ... first time, clinicians who wear gloves on their hands, goggles on their eyes, covers ...
(Date:8/26/2020)... ... ... As the U.S. struggles in its 6th month of fighting Covid-19, Americans ... mask, keep your distance, wash your hands. Prevention is the best tool for now. ... “How much better it is to prevent disease than to cure it.” , Part ...
(Date:8/26/2020)... ... 26, 2020 , ... NucleusHealth, LLC, a provider of market ... and Chief Executive Officer effective immediately. Dr. Vishal Verma, the previous CEO, will ... , Mr. Hooton, a seasoned business executive, joined the company in February ...
Breaking Medicine Technology:
Cached News: