Navigation Links
Brain Adapts to Age-Related Eye Disease
Date:3/3/2009

Neurons seek input from undamaged areas to compensate, study finds

TUESDAY, March 3 (HealthDay News) -- When macular degeneration causes one to start losing his or her sight, the affected neurons simply start seeking visual input from other, non-affected parts of the eye, Massachusetts Institute of Technology researchers report.

"This study shows us one way that the brain changes when its inputs change. Neurons seem to want to receive input: When their usual input disappears, they start responding to the next best thing," senior author Nancy Kanwisher, of MIT's McGovern Institute for Brain Research, said in an university news release.

The researchers found when the cells in the fovea, the part of the retina responsible for the central field of vision, were damaged by macular degeneration (MD) -- the neuron attached to them begin responding to stimuli in an undamaged section -- a type of internal reorganization of the eye's visual map as opposed to the cortex's work being shifting to other neurons.

"Our study shows that the changes we see in neural response in people with MD are probably driven by the lack of input to a population of neurons, not by a change in visual information-processing strategy," Kanwisher said.

The findings are published in the March 4 issue of the Journal of Neuroscience.

Macular degeneration, the most common form of adult blindness, affects almost 2 million people in the United States. Patients often compensate for lack of central vision by rolling their eyes upward so they can utilize the preferred retinal locus (PRL), an undamaged area under and adjacent to the affected part of the retina.

"Macular degeneration is a great opportunity to learn more about plasticity in the adult cortex," Kanwisher said.

More information

The U.S. National Eye Institute has more about macular degeneration.



-- Kevin McKeever



SOURCE: Massachusetts Institute of Technology, news release, March 3, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. UCI scientists to study brain region linked to autism, schizophrenia
2. Schizophrenia linked to signaling problems in new brain study
3. ProteoTech Receives Funding From The Michael J. Fox Foundation for Parkinsons Disease Research to Develop Tools for Imaging Alpha-Synuclein Aggregation in Living Parkinsons Brain
4. Sex is in the brain, says new research from Stanford
5. Smith & Nephew Orthopaedics and BrainLAB Announce Exclusive Computer-Assisted Surgery Development Agreement
6. M. D. Anderson Cancer Center Acquires Leksell Gamma Knife Perfexion for Targeted Brain Lesion Treatments
7. Physical fitness improves spatial memory, increases size of brain structure
8. Billions for Bank Bailouts, But How to Rebuild the Brands? NeuroFocus Reveals New Brainwave-Based Solutions
9. Thrill-Seekers Brains May Be Wired Differently
10. 2 gene mutations linked to most common brain cancers -- and longer survival
11. Genetic Mutations Linked to Deadly Brain Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Brain Adapts to Age-Related Eye Disease
(Date:12/7/2016)... Valley, CA (PRWEB) , ... December 07, 2016 , ... ... be used in several ways to restore a more youthful appearance to the face. ... now offer Sculptra, along with a variety of other treatments, to rejuvenate and renew ...
(Date:12/7/2016)... ... ... time to blow out his candles on his 14th birthday, Estefano Reano had only one ... at Joe DiMaggio Children’s Hospital surprised his family with a phone call that made his ... “He was playing at home, when we got the phone call telling us there was ...
(Date:12/7/2016)... ... December 07, 2016 , ... ... planning services to families and business owners in the greater Dallas metropolitan area, ... the Dallas Fallen Officer Foundation. , Established in 2009 by active police professionals ...
(Date:12/7/2016)... ... XX, 2016 (PRWEB) (PRWEB) December 07, 2016 , ... Man’s ... Filamentous Dermatitis Associated with Borrelia Infection” reveals that a condition similar ... the prestigious Journal of Veterinary Science & Medical Diagnosis. , Morgellons disease is ...
(Date:12/7/2016)... ... December 07, 2016 , ... Delete® - Tattoo Removal and Laser Salon Offers ... Season. Save Up To 33% Off Botox® and Juvederm® Products Now Through December 31, ... with Delightful Deals on Botox® and Juvederm® just in time for the ...
Breaking Medicine News(10 mins):
(Date:12/7/2016)... LONDON , Dec. 7, 2016 ... Global Market Intelligence (2011-2020)" provides market intelligence on ... and forecast (2011-2020) has been provided in the ... to provide 1) comprehensive global market intelligence through ... rates, market dynamics, industry structure and developments, market ...
(Date:12/7/2016)... Dec. 7, 2016  Northwest Biotherapeutics (Nasdaq: ... a biotechnology company developing DCVax® personalized immune therapies ... Nasdaq Staff has not accepted the Company,s plan ... previously reported, and the Company has notified Nasdaq ... common stock from listing on Nasdaq.  Upon withdrawal ...
(Date:12/7/2016)... Hoovers Research analysis is one ... combinational analytical tools. The report contains up to ... to present unique and reliable analysis. Assessment of ... during the next five years, including a deep ... sub markets, regional and country level analysis. The ...
Breaking Medicine Technology: