Navigation Links
fMRIs reveal brain's handling of low-priority ideas
Date:2/10/2010

SAN ANTONIO (Feb. 10, 2010) When we put an idea on the back burner, it goes into a processing area of the brain called the default-mode network. This network enables us to hold the low-priority idea in abeyance until a time when we aren't busy with something else.

"The default-mode network appears to be the brain's back burner for social decision making," said Peter T. Fox, M.D., director of the Research Imaging Institute at The University of Texas Health Science Center at San Antonio. "Usually these back-burner ideas relate to interpersonal interactions and decisions that can't readily be quantified and shouldn't be rushed."

Dr. Fox likened this to putting a computer batch job into background processing to wait until the system is less busy.

Role of genetics

A recently released study from the Research Imaging Institute, the Southwest Foundation for Biomedical Research and other institutions offers evidence that genetics plays a role in this back-burner setup, which has been shown to be abnormal in a variety of psychiatric disorders.

The work was described in the Jan. 18-22 online edition of Proceedings of the National Academy of Sciences (PNAS).

The default-mode network is one of several neural networks that operate whether the mind is at rest or is occupied doing a task. A separate PNAS paper, published in 2009 by Dr. Fox and the same collaborators, presented a strong case that all human behaviors may be properly viewed as cooperative interactions among these networks, Dr. Fox said.

Maps

The newer research estimated the importance of genetic effects on the default-mode network by creating maps of eight anatomically distinct regions within the network. These maps were obtained by functional magnetic resonance imaging (fMRI) studies in 333 individuals from 29 randomly selected, extended-family pedigrees.

Network connectivity and gray-matter density were correlated to genetic factors. "We found that more than 40 percent of the between-subject variance in functional connectivity within the default-mode network was under genetic control," Dr. Fox said.

Based on this information, it is possible new diagnostic tools could be considered for various psychiatric or neurological illnesses, he said.

The study also included collaborators from the Yale University School of Medicine, the University of Oxford in Oxford, U.K., and Imperial College in London, U.K. The project is an outgrowth of longstanding collaborations between the UT Health Science Center and the Southwest Foundation for Biomedical Research using tools for gene discovery. It is also a result of substantial collaborations between the Research Imaging Institute and Oxford to develop novel applications of imaging methods.

Future directions

"One long-term research goal is to test whether other intrinsically connected networks are also under genetic control, which we expect they will be," Dr. Fox said. "We also want to identify the genes that are controlling the default-mode network and other networks, and identify disorders associated with their abnormalities. A final goal is to develop treatment strategies."


'/>"/>

Contact: Will Sansom
sansom@uthscsa.edu
210-567-2579
University of Texas Health Science Center at San Antonio
Source:Eurekalert  

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. Study begins to reveal clues to the cause and progression of sepsis
3. Comet probes reveal evidence of origin of life, scientists claim
4. Structure of 450 million year old protein reveals evolutions steps
5. UF scientists reveal how dietary restriction cleans cells
6. Neural stem cell study reveals mechanism that may play role in cancer
7. New method reveals substances on surfaces of any kind
8. Study reveals predation-evolution link
9. IDEMA Reveals Program Highlights for DISKCON USA 2007
10. Study reveals possible genetic risk for fetal alcohol disorders
11. IDEMA Reveals Program Highlights for DISKCON USA 2007
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
fMRIs reveal brain's handling of low-priority ideas
(Date:2/1/2017)... Massachusetts , February 1, 2017 IDTechEx ... events on emerging technology, announces the availability of a new report, ... Continue Reading ... ... in industrial and collaborative robots. Source: IDTechEx Report "Sensors for Robotics: ...
(Date:1/25/2017)... , Jan. 25, 2017 The Elements of ... (IAM) lifecycle is comprised of a comprehensive set ... purpose of maintaining digital identities and providing a ... applications. There are significant number of programs opted ... to time by optimizing processes and changing policies. ...
(Date:1/19/2017)... 19, 2017 According to a new report published by ... - 2022," the global biometric sensor market is expected to garner $1.5 billion ... 2015, Asia-Pacific dominated the global market and contributed over ... Continue Reading ... ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... Dublin - Research and Markets has announced ... Type, By Application, By End User, By Region, By Country: Opportunities ... ... is forecasted to grow at a CAGR of 11.33% during 2016-2021. ... protection market is driven by the surging demand for less toxic ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... of Tom Perkins as European director. Operating from Pennside’s Zurich headquarters, Pennside Partners, ... , Perkins joins Pennside after more than a decade with leading market research ...
(Date:2/21/2017)... - SQI Diagnostics Inc. ("SQI" or the "Company") (TSX-V: SQD; OTCQX: ... months ended December 31, 2016. SQI is ... company that develops and commercializes proprietary technologies and products for ... ... milestones achieved in fiscal 2016," said Andrew Morris , ...
(Date:2/21/2017)... San Francisco, CA (PRWEB) , ... February 21, ... ... is pleased to announce that Dr. Trevor Heritage has joined its executive team ... a revolutionary system designed to provide insights to help improve the diagnosis and ...
Breaking Biology Technology: