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Aggression as rewarding as sex, food and drugs
Date:1/14/2008

dopamine receptor suppressors again and their movements in an open cage were observed. They showed no significant changes in overall movement compared to times when they had not received the drugs. This was done to demonstrate that their decreased aggression in the previous experiment was not caused by overall lethargy in response to the drug, a problem that had confounded previous experiments.

The Vanderbilt experiments are the first to demonstrate a link between behavior and the activity of dopamine receptors in response to an aggressive event.

We learned from these experiments that an individual will intentionally seek out an aggressive encounter solely because they experience a rewarding sensation from it, Kennedy said. This shows for the first time that aggression, on its own, is motivating, and that the well-known positive reinforcer dopamine plays a critical role.


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Contact: Melanie Moran
melanie.moran@vanderbilt.edu
615-322-2706
Vanderbilt University
Source:Eurekalert

Page: 1 2

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