Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Serotonin may affect our sense of fairness

10.06.2008
The neurotransmitter serotonin, which acts as a chemical messenger between nerve cells, plays a critical role in regulating emotions such as aggression during social decision-making, new research by scientists at England's University of Cambridge and UCLA suggests. Their findings appear June 6 in the peer-reviewed journal Science.

Serotonin has long been associated with social behavior, and low levels of serotonin are associated with depression and anxiety, but its precise involvement in impulsive aggression has been controversial. Though many scientists have hypothesized a link between serotonin and impulsivity, this is one of the first studies to show a causal link between the two.

The findings highlight why some of us may become combative or aggressive when we have not eaten. The essential amino acid necessary for the body to create serotonin can only be obtained through diet; our serotonin levels naturally decline when we don't eat.

The research also provides insight into clinical disorders characterized by low serotonin levels, such as depression and obsessive-compulsive disorder, and may help explain some of the social difficulties associated with these disorders.

... more about:
»Health »Serotonin »disorder

UCLA scientists reported in April that the human brain responds to being treated fairly the same way it responds to winning money and eating chocolate; being treated fairly turns on the brain's reward circuitry. In the new Science study, they and their Cambridge colleagues report that people with low serotonin levels were found to be more sensitive to being treated unfairly.

The Science study involved 20 subjects, 14 of them female, with an average age of 25. As in the April study, published in the journal Psychological Science, participants were presented with fair and insulting offers for dividing sums of money. If they declined, neither they nor the person making the offer would receive anything. Some of the offers were fair, such as receiving 5 Brisith pounds out of 10 or out of 12, while others were unfair, such as receiving 5 pounds out of 23.

In this study, however, after initially responding to the offers, participants were given a drink that significantly reduced their serotonin levels. They were then presented with the offers again.

When their serotonin levels were reduced, they rejected 82 percent of the unfair offers; when their serotonin levels were normal, they rejected only 67 percent of the unfair offers. Thus, people with low serotonin levels were more likely to reject unfair offers.

"The same person may experience the same thing as fair and unfair on different days based on how the neurochemistry of the brain is functioning," said study co-author Matthew D. Lieberman, UCLA associate professor of psychology and a founder of social cognitive neuroscience. "When we feel something is unfair, that may have to do with how our brain causes us to experience the world. Our subjects are not aware their serotonin levels are affecting the way they experience the world. This suggests we should be more forgiving of other people's perspectives."

"A sense of fair play is not a purely rational process," he added. "It seems not to be the case that, like a math formula, if something is fair, it's fair for all time, in all situations."

Stuart Wolpert | EurekAlert!
Further information:
http://www.ucla.edu

Further reports about: Health Serotonin disorder

More articles from Life Sciences:

nachricht Water forms 'spine of hydration' around DNA, group finds
26.05.2017 | Cornell University

nachricht How herpesviruses win the footrace against the immune system
26.05.2017 | Helmholtz-Zentrum für Infektionsforschung

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

How herpesviruses win the footrace against the immune system

26.05.2017 | Life Sciences

Water forms 'spine of hydration' around DNA, group finds

26.05.2017 | Life Sciences

First Juno science results supported by University of Leicester's Jupiter 'forecast'

26.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>