Navigation Links
NYU researchers identify new neurological deficit behind lazy eye
Date:9/10/2010

Researchers at New York University's Center for Neural Science have identified a new neurological deficit behind amblyopia, or "lazy eye." Their findings, which appear in the most recent issue of the Journal of Neuroscience, shed additional light on how amblyopia results from disrupted links between the brain and normal visual processing.

Amblyopia results from developmental problems in the brain. When the parts of the brain concerned with visual processing do not function properly, problems ensue with such visual functions as the perception of movement, depth, and fine detail. It is most prevalent neurological defect of vision in children and adults, affecting 1-3 percent of the population.

Previous research on amblyopia has largely focused on one aspect of visual processingthat in the primary visual cortex, or V1.

However, while abnormalities in V1 explain some amblyopic visual problems, they fail to account for the full range of losses suffered by those with amblyopiaincluding motion perception. With this in mind, the NYU researchers studied a brain area called MT, which has a well-established role in processing information about moving visual objects.

To do this, the researchers studied the visual processing of macaque monkeys, examining those who had normal vision and those whose vision was impaired by amblyopia. The researchers recorded both the monkeys' ability to detect motion and how MT's neurons functioned in this process.

Their results showed striking changes in neuron activity in MT. In monkeys with normal vision, the MT neurons responded through both eyes. However, in those with amblyopia, the MT neurons showed stronger response in one eyeusually the one not affected by the disorder. Normal visual motion perception relies on neurons that integrate information about the position of moving objects as they cross the visual image. The NYU researchers found that this ability to integrate motion information was defective in neurons driven through the affected eye, which might explain the animal's deficits in motion perception.

"This study shows that amblyopia results from changes in the brain that extend beyond the primary visual cortex," said J. Anthony Movshon, director of the Center for Neural Science and the paper's senior author, adding that many other affected neurological regions remain undiscovered.


'/>"/>

Contact: James Devitt
james.devitt@nyu.edu
212-998-6808
New York University
Source:Eurekalert

Related medicine news :

1. SWOG names 5 cancer researchers outstanding Young Investigators
2. Adults demonstrate modified immune response after receiving massage, Cedars-Sinai researchers show
3. Researchers identify gene set that shows which patients benefit from chemo after surgery
4. Researchers will test suicide prevention program in high schools
5. Mount Sinai researchers find new target to improve pain management
6. Non-invasive therapy significantly improves depression, UCLA researchers say
7. For the first time, researchers identify and isolate adult mammary stem cells in mice
8. UNH researchers develop improved tool for cycling fitness
9. Sodium MRI gives new insights into detecting osteoarthritis, NYU researchers find
10. Researchers urge reclassification of traumatic brain injury as chronic disease
11. Researchers closer to development of drug to prevent deadly immune response
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... ... Journey: From the Mountains to the Mission Field”: the story of a missionary couple ... From the Mountains to the Mission Field” is the creation of published author, Carole ... and currently teaches a class of ladies at her church, which she has taught ...
(Date:10/12/2017)... Francisco, CA (PRWEB) , ... October 12, 2017 ... ... Dr. Cheng, are now treating sleep apnea using cutting-edge Oventus O2Vent ... apnea, a serious sleep disorder characterized by frequent cessation in breathing. Oral appliances ...
(Date:10/12/2017)... ... 12, 2017 , ... IsoComforter, Inc. ( https://isocomforter.com ), one of ... innovative new design of the shoulder pad. The shoulder pad provides optimal support ... your pain while using cold therapy. By utilizing ice and water that is circulated ...
(Date:10/12/2017)... ... October 12, 2017 , ... Information about ... intend to develop to enable prevention of a major side effect of chemotherapy ... especially in pediatric patients. For cisplatin, hearing loss is FDA listed on-label as ...
(Date:10/12/2017)... ... ... Leading pediatric oncology experts at Children’s National Health System will ... the International Society of Paediatric Oncology (SIOP) Oct. 12-15. Chaired by Jeffrey ... Disorders at Children’s National, and Stephen P. Hunger, M.D., Chief of the Division ...
Breaking Medicine News(10 mins):
(Date:9/27/2017)... and NEW YORK , Sept. 27, 2017 /PRNewswire/ ... health and big data solutions, today announced that its MyDario product is ... your local TV listings for when The Dr. Oz Show airs in ... The nine-time ... month. ...
(Date:9/22/2017)... Sept. 22, 2017  As the latest Obamacare repeal ... Bill Cassidy (R-LA) and Lindsey Graham ... the medical device industry is in an odd place. ... the 2.3% excise tax on medical device sales passed ... want covered patients, increased visits and hospital customers with ...
(Date:9/18/2017)... ALLENTOWN , Pa. and KALAMAZOO, Mich. ... Allentown, Penn. , and OptiMed Specialty Pharmacy ... a business partnership to offer a strategic hub service ... PMD Healthcare,s highly sought-after personal spirometer, Spiro PD 2.0, ... A spirometer is a medical device used ...
Breaking Medicine Technology: