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.

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 July 29, 2014 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 July 29, 2014).

Share This




More Mind & Brain News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

It's Not Just Facebook: OKCupid Experiments With Users Too

It's Not Just Facebook: OKCupid Experiments With Users Too

Newsy (July 29, 2014) If you've been looking for love online, there's a chance somebody has been looking at how you're looking. Video provided by Newsy
Powered by NewsLook.com
How Your Face Can Leave A Good Or Bad First Impression

How Your Face Can Leave A Good Or Bad First Impression

Newsy (July 29, 2014) Researchers have found certain facial features can make us seem more attractive or trustworthy. Video provided by Newsy
Powered by NewsLook.com
Losing Sleep Leaves You Vulnerable To 'False Memories'

Losing Sleep Leaves You Vulnerable To 'False Memories'

Newsy (July 27, 2014) A new study shows sleep deprivation can make it harder for people to remember specific details of an event. Video provided by Newsy
Powered by NewsLook.com
University Quiz Implies Atheists Are Smarter Than Christians

University Quiz Implies Atheists Are Smarter Than Christians

Newsy (July 25, 2014) An online quiz from a required course at Ohio State is making waves for suggesting atheists are inherently smarter than Christians. 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:
from the past week

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