thought this would be of interest to some of you. This is a paste job of
Duke News Release.
Barbara I wonder whether this could impact quality of movement
observation, empathy and
such.
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(Embedded image moved to file: pic46928.gif)News Release
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Activation of Brain Region Predicts Altruism
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(Embedded image moved to file: pic52838.gif)Article Details
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keywords :
Brain, Brain Imaging
date :
1/21/2007
media contact :
Marla Vacek
Broadfoot , (919)
660-1306
marla.broadfoot at duke
.edu
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DURHAM, N.C. -- Duke University Medical Center researchers have
discovered that activation of a particular brain region predicts whether
people tend to be selfish or altruistic.
"Although understanding the function of this brain region may not
necessarily identify what drives people like Mother Theresa, it may give
clues to the origins of important social behaviors like altruism," said
study investigator Scott A. Huettel, Ph.D., a neuroscientist at the
Brain Imaging and Analysis Center.
Results of the study appear Sunday, Jan. 21, in the advance online
edition of Nature Neuroscience and will be published in the February
2007 print issue of the journal. The work was funded by the National
Institutes of Health.
Altruism describes the tendency of people to act in ways that put the
welfare of others ahead of their own. Why some people choose to act
altruistically is unclear, says lead study investigator Dharol
Tankersley, a graduate student in Huettel's laboratory.
In the study, researchers scanned the brains of 45 people while they
either played a computer game or watched the computer play the game on
its own. In both cases, successful playing of the game earned money for
a charity of the study participant's choice.
The researchers scanned the participants' brains using a technique
called functional magnetic resonance imaging (fMRI), which uses harmless
magnetic pulses to measure changes in oxygen levels that indicate nerve
cell activity.
The scans revealed that a region of the brain called the posterior
superior temporal sulcus was activated to a greater degree when people
perceived an action -- that is, when they watched the computer play the
game -- than when they acted themselves, Tankersley said. This region,
which lies in the top and back portion of the brain, is generally
activated when the mind is trying to figure out social relationships.
The researchers then characterized the participants as more or less
altruistic, based on their responses to questions about how often they
engaged in different helping behaviors, and compared the participants'
brain scans with their estimated level of altruistic behavior. The fMRI
scans showed that increased activity in the posterior superior temporal
sulcus strongly predicted a person's likelihood for altruistic behavior.
According to the researchers, the results suggest that altruistic
behavior may originate from how people view the world rather than how
they act in it.
"We believe that the ability to perceive other people's actions as
meaningful is critical for altruism," Tankersley said.
The scientists suggest that studying the brain systems that allow people
to see the world as a series of meaningful interactions may ultimately
help further understanding of disorders, such as autism or antisocial
behavior, that are characterized by deficits in interpersonal
interactions.
The researchers are now exploring ways to study the development of this
brain region early in life, Tankersley said, adding that such
information may help determine how the tendencies toward altruism are
established.
C. Jill Stowe, a decision scientist in Duke's Fuqua School of Business,
also participated in the research.
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