Navigation Links
Losing money, emotions and evolution
Date:6/12/2012

Financial loss can lead to irrational behavior. Now, research by Weizmann Institute scientists reveals that the effects of loss go even deeper: Loss can compromise our early perception and interfere with our grasp of the true situation. The findings, which recently appeared in the Journal of Neuroscience, may also have implications for our understanding of the neurological mechanisms underlying post-traumatic stress disorder.

The experiment was conducted by Dr. Rony Paz and research student Offir Laufer of the Neurobiology Department. Subjects underwent a learning process based on classic conditioning and involving money. They were asked to listen to a series of tones composed of three different notes. After hearing one note, they were told they had earned a certain sum; after a second note, they were informed that they had lost some of their money; and a third note was followed by the message that their bankroll would remain the same. According to the findings, when a note was tied to gain, or at least to no loss, the subjects improved over time in a learned task distinguishing that note from other, similar notes. But when they heard the "lose money" note, they actually got worse at telling one from the other.

Functional MRI (fMRI) scans of the brain areas involved in the learning process revealed an emotional aspect: The amygdala, which is tied to emotions and reward, was strongly involved. The researchers also noted activity in another area in the front of the brain, which functions to moderate the emotional response. Subjects who exhibited stronger activity in this area showed less of a drop in their abilities to distinguish between tones.

Paz: "The evolutionary origins of that blurring of our ability to discriminate are positive: If the best response to the growl of a lion is to run quickly, it would be counterproductive to distinguish between different pitches of growl. Any similar sound should make us flee without thinking. Unfortunately, that same blurring mechanism can be activated today in stress-inducing situations that are not life-threatening like losing money and this can harm us."

That harm may even be quite serious: For instance, it may be involved in post-traumatic stress disorder. If sufferers are unable to distinguish between a stimulus that should cause a panic response and similar, but non-threatening, stimuli, they may experience strong emotional reactions in inappropriate situations.

This perceptional blurring may even expand over time to encompass a larger range of stimuli. Paz intends to investigate this possibility in future research.


'/>"/>

Contact: Yivsam Azgad
news@weizmann.ac.il
972-893-43856
Weizmann Institute of Science
Source:Eurekalert

Related medicine news :

1. Diabetes Can Take a Toll on Your Emotions
2. New Clues to the Evolution of the Human Brain
3. Evolution May Explain Runners High, Study Says
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/28/2016)... ... 2016 , ... After a year and a half of planning the Multiple Pathways of ... Multiple Pathways of Recovery Conference was held May 2 -4, 2016 at the Mystic ... came together to explore the many pathways individuals use to get into and sustain their ...
(Date:5/27/2016)... ... May 27, 2016 , ... Two director-level employees of Horizon Blue Cross Blue ... Industry (TWIN) 2016 honorees. The award recognizes businesswomen who excel in their fields ... Director of the MLTSS (Managed Long-Term Services and Supports) Program at Horizon NJ Health ...
(Date:5/27/2016)... ... , ... This campaign aims to provide a path to improved education and ... and change. , As nearly 795,000 Americans suffering from a new or recurrent stoke ... with an estimated 129,000 of these people dying from stroke, it’s become our nation’s ...
(Date:5/27/2016)... ... 27, 2016 , ... Aimed at nurses and employees in ... courtesy of leaders in the nursing and health care industry. It also provides ... and associations—namely Jones & Bartlett Learning. , Jones & Bartlett Learning is adding ...
(Date:5/26/2016)... ... ... Despite last week’s media reports hinting at a June rate hike after the ... for an interest rate increase, according to Rajeev Dhawan of the Economic Forecasting Center ... Market Committee (FOMC) dot charts are of interest to the press for their noise ...
Breaking Medicine News(10 mins):
(Date:5/27/2016)... PUNE, India , May 27, 2016 ... in the instances of hypertension is driving ambulatory blood ... muscles lose their elasticity and their ability to respond ... blood pressure. This condition can lead to various cardiovascular ... and peripheral vascular disease. These diseases are growing in ...
(Date:5/26/2016)... , May 26, 2016 According ... "Medical Waste Management Market - U.S. Industry Analysis, Size, Share, ... management market in the U.S. was valued at US$ 5.89 ... CAGR of 3.4% from 2015 to 2023 to reach US$ ... analysis of current and emerging needle free drug delivery devices ...
(Date:5/25/2016)... May 25,2016 FDA 510(k) ... Cellvizio platform for urological and surgical applications ... inventor of Cellvizio®, the multidisciplinary confocal laser endomicroscopy ... in the US with the 12 th ... Administration (FDA). This new FDA clearance covers Confocal ...
Breaking Medicine Technology: