Navigation Links
Brain connections break down as we age
Date:8/18/2010

ANN ARBOR, Mich.---It's unavoidable: breakdowns in brain connections slow down our physical response times as we age, a new study suggests.

This slower reactivity is associated with an age-related breakdown in the corpus callosum, a part of the brain that acts as a dam during one-sided motor activities to prevent unwanted connectivity, or cross-talk, between the two halves of the brain, said Rachael Seidler, associate professor in the University of Michigan School of Kinesiology and Department of Psychology, and lead study author.

At other times the corpus callosum acts at a bridge and cross-talk is helpful, such as in certain cognitive functions or two-sided motor skills.

The U-M study is the first known to show that this cross-talk happens even while older adults are at rest, said Seidler, who also has appointments in the Institute of Gerontology and the Neuroscience Graduate Program. This resting cross-talk suggests that it is not helpful or compensatory for the two halves of the brain to communicate during one-sided motor movements because the opposite side of the brain controls the part of the body that is moving. So, when both sides of the brain talk simultaneously while one side of the body tries to move, confusion and slower responses result, Seidler said.

Previous studies have shown that cross-talk in the brain during certain motor tasks increases with age but it wasn't clear if that cross-talk helped or hindered brain function, said Seidler.

"Cross-talk is not a function of task difficulty, because we see these changes in the brain when people are not moving," Seidler said.

In some diseases where the corpus callosum is very deteriorated, such as in people with multiple sclerosis, you can see "mirror movements" during one sided-motor tasks, where both sides move in concert because there is so much communication between the two hemispheres of the brain, Seidler said. These mirror movements also
'/>"/>

Contact: Laura Bailey
baileylm@umich.edu
734-647-1848
University of Michigan
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Brain gene expression changes when honey bees go the distance
2. Boston Univ., Veterans Affairs find sports brain trauma may cause disease mimicking ALS
3. Saving the brains white matter with mutated mice
4. Deathstalker scorpion venom could improve gene therapy for brain cancer
5. Newly discovered mechanism controls levels and efficacy of a marijuana-like substance in the brain
6. Caltech: Gain and loss in optimistic versus pessimistic brains
7. Brain size determines whether fish hunters or slackers
8. Scripps research study shows infectious prions can arise spontaneously in normal brain tissue
9. Children with brain injuries have problems with story-telling
10. Irradiating stem cell niche doubles survival in brain cancer patients
11. Does the existing standard of care supply energy sources to brain tumor cells?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Brain connections break down as we age
(Date:7/7/2015)... , July 7, 2015  Based on ... Frost & Sullivan recognizes Credence ID, LLC with ... Entrepreneurial Company of the Year Award. Credence ID ... aid in its mission of offering enrollment and ... globally. As Credence ID was formed by experts ...
(Date:7/2/2015)... , June 25, 2015 ... the addition of the "Natural Language Processing ... (Recognition, IVR, OCR, Pattern & Image Recognition) - ... offering. The key vendors occupying the ... IBM Corporation, Microsoft Corporation, NetBase Solutions, SAS Institute ...
(Date:7/2/2015)... 2, 2015 Fingerprint Cards has received ... and FPC1155 from the distributor World Peace Industrial Group (WPI), ... in Asia . Deliveries are planned to ... be used by smartphone manufacturers in Asia ... the communicated revenue guidance of approximately 2,200 MSEK for 2015. ...
Breaking Biology News(10 mins):Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 2Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 3Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 4Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 5Natural Language Processing Market by Type (Rule-Based, Statistical, and Hybrid), Technologies (Recognition, IVR, OCR, Pattern & Image Recognition) - Worldwide Forecast to 2020 2FPC Receives Order for Touch Fingerprint Sensors of 268 MSEK 2
... Researchers at UT Southwestern Medical Center have uncovered a ... in an animal study. They found that a ... DNA, prompts stem cells to mature into red blood cells. ... this process. Such interventions, if fruitful in humans, might ...
... ALBUQUERQUE, N.M. In an innovation critical ... DNA through nanopores has been achieved by a team ... from silicon dioxide are generally straight, tiny tunnels more ... a human hair. They are used as sensors to ...
... found that the reforestation of damaged rainforests is ... monoculture plantations. The research, published in Ecological ... the efficiency of industrial monoculture plantations. "Carbon ... for restoration projects as countries and corporations seek ...
Cached Biology News:UT Southwestern researchers find key step in body's ability to make red blood cells 2Kinked nanopores slow DNA passage for easier sequencing 2Reforestation projects capture more carbon than industrial plantations, reveals new research 2
(Date:7/30/2015)... SAN DIEGO, July 30, 2015   Senomyx , ... proprietary taste science technologies to discover, develop, and commercialize ... supply industries, today reported financial results for the second ... half of 2015, we remain on track to achieve ... and Chief Executive Officer of the Company. "Since our ...
(Date:7/30/2015)... ... July 30, 2015 , ... As part of its 2015 growth plan and as ... technical service business units, Whitehouse Laboratories is pleased to announce that it has ... the Container Center of Excellence and will be strictly dedicated to basic USP 51, USP ...
(Date:7/29/2015)... US-Australian drug discovery company, Novogen Limited (ASX: NRT; NASDAQ: ... progressing its ground-breaking technology platforms to Phase 1 clinical ... Company delivers the best value for shareholders. ... the Company currently had an extensive program of activities ... academic partnerships and initiatives, and he was working with ...
(Date:7/29/2015)... College Station, TX (PRWEB) , ... July 29, ... ... cleanroom POD® designer, manufacturer and supplier, announces the launch of their 2nd generation ... compared to the current miniPOD CT, but it also represents a new POD® ...
Breaking Biology Technology:SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 2SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 3SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 4SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 5SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 6SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 7SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 8SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 9Whitehouse Labs Formally Announces Plans to Open a Microbiological Laboratory 2Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 2Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 3Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 4Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 5Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 6Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 7Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 8Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 9Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 10G-CON Manufacturing Launches Their 2nd Generation Cell Therapy Cleanroom POD® 2G-CON Manufacturing Launches Their 2nd Generation Cell Therapy Cleanroom POD® 3
... Midwest technology workplaces in this Nine2Five column, what ... tech employee if you work from home doing outside sales ... is so integrated into our daily work lives nowadays that ... "bleep" noise from the machine is finished. , ,So how ...
... BROOKFIELD, Wis. Fiserv Imagesoft , a division ... Thursday that it has completed enhancement of its ExchangeGuard ... improving the security of image replacement documents (IRDs), which ... original check. , ,The new features of ExchangeGuard include ...
... Apple Computers and Apple Records (of Beatles fame) is now headed ... is Sir Paul McCartney, with the title of a legendary musical ... side, yet another youthful boy wonder, Steve Jobs with his intellect ... start of the personal computer revolution. , ,The fight is all ...
Cached Biology Technology:You might work in a Midwest technology environment if... 2You might work in a Midwest technology environment if... 3Why you should never name your company after a fruit 2Why you should never name your company after a fruit 3
Our Histology, Immunohistochemistry and tissue arrays services include samples processing, different type of staning, histollogical stains, image analysis, tissue arrays, immunohistochemistry, etc....
Mouse polyclonal antibody to GRID2 - glutamate receptor, ionotropic, delta 2...
... pLivSelect is a direct antibiotic-based selection system ... on colony survival, eliminating the need for ... process provides close to 100% accuracy in ... platform for robot colony picking. This cloning ...
Mouse polyclonal antibody raised against a partial recombinant KCTD13. NCBI Entrez Gene ID = 253980...
Biology Products: