Featured Research

from universities, journals, and other organizations

Why Stroke Causes Vision Problems

Date:
June 8, 2007
Source:
University Of Queensland
Summary:
Scientists have uncovered evidence that could help to explain why some stroke patients have trouble maintaining a stable image of their visual world when they make eye movements.

The research, by QBI neuroscientist Professor Jason Mattingley and colleagues at the University of Melbourne and University College London, has implications for understanding "spatial neglect", a disorder associated with damage to the brain's parietal lobe -- an area that plays an important role in integrating sensory information from various parts of the body, and in planning eye- and limb-movements.

Related Articles


Professor Mattingley said the neurological condition of spatial neglect tends to be associated with poor recovery for individuals who have suffered a stroke.

"After a stroke, many people with damage to their parietal lobe behave as if one-half of their visual world has simply disappeared," he said.

To examine this problem under controlled conditions, the researchers applied painless and reversible brain stimulation to the parietal lobe in 16 healthy volunteers.

By measuring "saccadic eye movements" during brain stimulation, Professor Mattingley's team showed specific areas of the parietal lobe use signals from motor areas of the brain to integrate each new snapshot of the visual world into a coherent whole.

The findings, published in the Proceedings of National Academy of Sciences of the United States of America, build on a body of research by Professor Mattingley which confirms deficits in human spatial updating contribute to vision problems in some stroke patients.

"Broadly speaking, our findings have implications for understanding a range of disorders of spatial perception associated with parietal damage, and point to promising new approaches to rehabilitation", Professor Mattingley said.


Story Source:

The above story is based on materials provided by University Of Queensland. Note: Materials may be edited for content and length.


Cite This Page:

University Of Queensland. "Why Stroke Causes Vision Problems." ScienceDaily. ScienceDaily, 8 June 2007. <www.sciencedaily.com/releases/2007/06/070606113434.htm>.
University Of Queensland. (2007, June 8). Why Stroke Causes Vision Problems. ScienceDaily. Retrieved April 19, 2015 from www.sciencedaily.com/releases/2007/06/070606113434.htm
University Of Queensland. "Why Stroke Causes Vision Problems." ScienceDaily. www.sciencedaily.com/releases/2007/06/070606113434.htm (accessed April 19, 2015).

Share This


More From ScienceDaily



More Mind & Brain News

Sunday, April 19, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Our Love Of Puppy Dog Eyes Explained By Science

Our Love Of Puppy Dog Eyes Explained By Science

Newsy (Apr. 17, 2015) Researchers found a spike in oxytocin occurs in both humans and dogs when they gaze into each other&apos;s eyes. Video provided by Newsy
Powered by NewsLook.com
Scientists Find Link Between Gestational Diabetes And Autism

Scientists Find Link Between Gestational Diabetes And Autism

Newsy (Apr. 17, 2015) Researchers who analyzed data from over 300,000 kids and their mothers say they&apos;ve found a link between gestational diabetes and autism. Video provided by Newsy
Powered by NewsLook.com
Video Messages Help Reassure Dementia Patients

Video Messages Help Reassure Dementia Patients

AP (Apr. 17, 2015) Family members are prerecording messages as part of a unique pilot program at the Hebrew Home in New York. The videos are trying to help victims of Alzheimer&apos;s disease and other forms of dementia break through the morning fog of forgetfulness. (April 17) Video provided by AP
Powered by NewsLook.com
Common Pain Reliever Might Dull Your Emotions

Common Pain Reliever Might Dull Your Emotions

Newsy (Apr. 16, 2015) Each week, millions of Americans take acetaminophen to dull minor aches and pains. Now researchers say it might blunt life&apos;s highs and lows, too. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins