Navigation Links
Scientists Identify Brain's 'Hate Circuit'

And same 2 areas also activated by romantic love, study finds

WEDNESDAY, Oct. 29 (HealthDay News) -- British researchers say they've identified a "hate circuit" in the brain.

This hate circuit shares part of the brain associated with aggression, but is distinct from areas related to emotions such as fear, threat, and danger, said researchers Professor Semir Zeki and John Romaya, of University College London's laboratory of neurobiology.

The study was published online Oct. 29 in the journal PLoS One.

"Hate is often considered to be an evil passion that should, in a better world, be tamed, controlled, and eradicated," Zeki said in a journal news release. "Yet to the biologist, hate is a passion that is of equal interest to love. Like love, it is often seemingly irrational and can lead individuals to heroic and evil deeds. How can two opposite sentiments lead to the same behavior?"

In this study, 17 female and male volunteers underwent brain scans while they looked at photos of a person they hated, along with photos of a "neutral" person. Looking at images of hated people triggered activity in an area that includes structures in the cortex and in the sub-cortex as well as components that generate aggressive behavior and translate it into action.

The hate circuit also includes a part of the frontal cortex that's believed to play a major role in predicting the actions of others, likely an important feature when a person is faced with someone they hate, the researchers said.

The sub-cortical activity of the hate circuit involves two structures called the putamen and insula. The putamen plays a role in the perception of contempt and disgust, and may be part of the motor system that's mobilized to take action, the scientists said.

"Significantly, the putamen and insula are also both activated by romantic love. This is not surprising. The putamen could also be involved in the preparation of aggressive acts in a romantic context, as in situations when a rival presents a danger. Previous studies have suggested that the insula may be involved in responses to distressing stimuli, and the viewing of both a loved one and a hated face may contribute such a distressing signal," Zeki said.

He added that activity in parts of the hate circuit matches the strength of the person's declared intensity of hate, "thus allowing the subjective state of hate to be objectively quantified. This finding may have legal implications in criminal cases, for example."

More information

The Science Museum in London, England, has more about the brain and emotions.

-- Robert Preidt

SOURCE: PLoS One, news release, Oct. 29, 2008

Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. New prion protein discovered by Canadian scientists may offer insight into mad cow disease
2. Scientists Probe Sepsis Deadly Secrets
3. Scientists puzzled by severe allergic reaction to cancer drug in the middle Southern US
4. Scientists Develop Natural Protection for Stored Foods
5. Scientists detect presence of marburg virus in african fruit bats
6. Scientists Spot Brains Free Will Center
7. Scientists ID Likely Culprit in Popcorn Lung
8. Scientists explain how insulin secreting cells maintain their glucose sensitivity
9. Scripps Research scientists shed new light on how antibodies fight HIV
10. Scientists, physicians present latest findings in personalized cancer treatment and prevention
11. Scientists demonstate link between genetic variant and effectiveness of smoking cessation meds
Post Your Comments:
Related Image:
Scientists Identify Brain's 'Hate Circuit'
(Date:11/27/2015)... , ... November 27, 2015 , ... ProSidebar: Fashion ... Final Cut Pro X. With ProSidebar: Fasion, video editors can easily add an ... as a minimalist title opener. Utilize presets featuring self-animating drop zones, lines, bars, ...
(Date:11/27/2015)... ... November 27, 2015 , ... Intellitec ... Dynamics SL User Group (MSDSLUG). Recognized as Microsoft’s official group for end users ... Dynamics SL software users, partners, industry experts and representatives. Intellitec Solutions’ membership status ...
(Date:11/27/2015)... ... November 27, 2015 , ... Keeping in mind ... mental health and wellness consultation, has collaborated with a leading web-based marketplace for ... gap experienced by parents and bring advice from parenting experts within their reach. ...
(Date:11/27/2015)... Rosa, CA (PRWEB) , ... November 27, 2015 , ... ... Northern California Medical Associates, Inc. and Dr. Tucker Bierbaum with Emergency Medicine at ... meeting. They observed that both STEMI and Sepsis conditions present in similar ways and ...
(Date:11/26/2015)... MI (PRWEB) , ... November 26, 2015 , ... ... for substance abuse located in central Michigan, have come together on Thanksgiving Day ... specially produced video, available for viewing on the Serenity Point YouTube channel, patients ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... --> --> ... immunotherapy with Bremachlorin-photodynamic therapy for advanced cancer.   ... with Bremachlorin-photodynamic therapy for advanced cancer.   ... with Bremachlorin-photodynamic therapy for advanced cancer.   ... immunotherapy can be efficiently combined with photodynamic therapy (PDT) ...
(Date:11/26/2015)... --> --> ... find optimal contrast weighting of MRI for patients with ... a research agreement with SyntheticMR in order to use SyMRI ... is possible to generate multiple contrast images from a single ... left, thus making it possible to both fine tune images ...
(Date:11/26/2015)... , November 26, 2015 3D bioprinting ... 2022, according to a new report by Grand View Research ... Disease (CKD) which demands kidney transplantation is expected to boost ... effective substitute for organ transplantation. --> 3D bioprinting ... 2022, according to a new report by Grand View Research ...
Breaking Medicine Technology: