Navigation Links
"Active" Brain Makes Rational Decisions!!

According to a new research, conducted at UCL (University College London) thatis funded by the Wellcome Trust, emotional responses in a tight situation results// in irrational behaviour. The ability to control the emotions, than the emotions being absent, will result in rational behaviour.

The classical theories of Economics suggest that people act rationally while making a decision. But it is not the case always. People do behave irrationally when they are under an influence.

For example, people are strongly and consistently affected by the way in which a question is presented. An operation that has 40 per cent probability of success seems more appealing than one that has a 60 per cent chance of failure.

In the study, published in the journal Science, UCL researchers used a gambling experiment to establish the cognitive basis for rational decision-making. The goal of the task was to accumulate as much money as possible, with the incentive of being paid in real money in proportion to the money won during the experiment. Participants were given a starting amount of money (£50) at the beginning of each trial. They were then asked to choose between either a sure option or a gamble option (where they would have a certain chance of winning the entire amount, but also of losing it all). Subjects were presented with these choices under two different frames (i.e. scenarios), in which the sure option was worded either as the amount to be kept from the starting amount ("keep £20"), or the amount to be deducted ("lose £30"). The two options, although worded differently, would result in exactly the same outcome, i.e. that the participant would be left with £20.

The UCL study found that participants were more likely to gamble at the threat of losing £30 than the offer of keeping £20. On average, when presented with the "keep" option, participants chose to gamble 43 per cent of the time compared with 62 per cent for the "lose" option. F urthermore, there was a marked difference in behaviour between participants. Some people adopted a more rational approach and gambled more equally and consistently under both frames, while others showed a real aversion to risk in the "keep" frame while at the same time displaying high risk-seeking behaviour in the "lose" frame.

Brain imaging revealed that the amygdala, a region thought to control our emotions and mediate the 'fight or flight' reaction, underpinned this bias in the decision process. Moreover, the UCL study revealed that people with more rational behaviour had greater brain activity in the prefrontal cortex, a region known to be involved in higher-order executive processes, suggesting that their brains are better able to incorporate their emotions into a more balanced reasoning process.

Mr Benedetto de Martino, of the UCL Institute of Neurology, says: "It is well known that human choices are affected by the way in which a question is phrased. For example, saying an operation carries an 80 per cent survival rate may trigger a different response compared to saying that an operation has a 20 per cent chance of dying from it, even though they offer exactly the same degree of risk.

"Our study provides neurobiological evidence that an amygdala-based emotional system underpins this biasing of human decisions. Moreover, we found that people are rational, or irrational, to widely differing amounts. Interestingly, the amygdala was active across all participants, regardless of whether they behaved rationally or irrationally, suggesting that everyone experiences an emotional reaction when faced with such choices. However, we found that more rational individuals had greater activation in their orbitofrontal cortex (a region of prefrontal cortex) suggesting that rational individuals are able to better manage or perhaps override their emotional responses."

(Source : Eurekalrt)
'"/>




Related medicine news :

1. Use of Cellular Phones associated with Increased risk of Brain Tumors
2. Brain death – How to cope with it
3. “Brain fingerprinting”- The new lie detectr
4. Nasal Spray Could Take Drugs Direct to Brain.
5. Virus Combats Brain Tumour
6. Nasal Spray Could Take Drugs Directly to Brain
7. Control of anger disorder connected to Brain Dysfunction
8. High Levels of Protein Linked to Brain Shrinkage
9. Brain damage affects artistic skill
10. Brain cells protected by new compounds
11. Brain changes observed in people with sleep apnoea
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/24/2016)... ... May 24, 2016 , ... ... today announced the official relaunch of its community and education hub for women ... Eggsurance's mission is to create a safe and welcoming place for women to ...
(Date:5/24/2016)... ... May 24, 2016 , ... The Radiosurgery Society (RSS), ... radiosurgery, is recognizing five medical residents and students for their outstanding contributions to ... The awards will be presented at the 2016 SRS/SBRT Scientific Meeting taking place ...
(Date:5/24/2016)... ... May 24, 2016 , ... The number of health ... or 10% over last year, according to data in the forthcoming AIS’s Directory ... comparatively stable, with a slight decrease in risk-based groups and a slight increase ...
(Date:5/24/2016)... ... May 24, 2016 , ... Bio-Logic Aqua® Research Water ... years and a trainer for Ageless Grace ( http://www.agelessgrace.com ) to discuss healthier ... May 16, 2016. , Formerly a Northwestern University Literature Professor, Kinst gravitated to ...
(Date:5/24/2016)... ... ... WaterAid launched the #perioddrama campaign to mark Menstrual Hygiene Day on May 28 ... world who do not have access to a toilet, even when they’re on their periods. ... #perioddrama. The (sometimes hilarious) results help shine a light on the awkwardness that women face ...
Breaking Medicine News(10 mins):
(Date:5/23/2016)... SAN FRANCISCO , May 23, 2016 ... expected to reach USD 5.0 billion by 2022, according ... The increasing generation of medical waste coupled with the ... healthcare industry is expected to drive the demand for ... with these devices as compared to that of the ...
(Date:5/20/2016)... 2016 The Biotech arena remains ... the industry is not far from recovering. There are ... the following four equities: Anacor Pharmaceuticals Inc. (NASDAQ: ... ), Aralez Pharmaceuticals Inc. (NASDAQ: ARLZ ), ... Sign up for your free trading alerts on these ...
(Date:5/19/2016)... Calif. , May 19, 2016  According ... thirds of the world lacks basic diagnostic imaging. ... in the United States , ... to such technology. In fact, the WHO reports ... risk of avoidable or treatable death, simply due ...
Breaking Medicine Technology: