Navigation Links
Eye movement differs in British and Chinese populations

The team, working with Sichuan University in Chengdu, China, investigated eye movements in Chinese and British people to further understanding of the brain mechanisms that control them and how they compare between different human populations. They found that a type of eye movement, that is rare in British people, is much more common in Chinese people, suggesting that there could be subtle differences in brain function between different populations.

Tests of eye movements can be used to help identify signs of brain injury or disease, such as schizophrenia and multiple sclerosis, in populations across the world. Research at Liverpool, however, has shown that within the Chinese population there are a high proportion of healthy people that exhibit a pattern of eye movements previously thought to be rare in the absence of injury or disease. Findings, published in the journal Experimental Brain Research, suggest that this pattern may not be as effective as a signal of altered brain function, in every global community, as originally thought.

Working in China and in Britain, the team tested fast eye movements, called saccades. Participants in the study were asked to respond to spots of light with their eyes as they appeared suddenly to the right or left of their line of sight. The reaction time of the eye movements was the key measure that differentiated between Chinese and non-Chinese groups.

Dr Paul Knox, from the Institute of Ageing and Chronic Disease, explains: "In a person from any country in the world we would expect the reaction time of fast eye movements to be approximately a fifth of a second. Very rarely we find some people with eye movement reaction times that are much shorter than this, at around a tenth of a second. This, however, is usually assumed to be a sign of an underlying problem that makes it difficult to keep the eyes pointing where you would like for a long enough period.

"In our study, as we expected, 97% of British people had the common fifth of a second delay, and only 3% had the much faster response. In our Chinese group, however, 30% had the faster, less common response. Our participants were healthy, with normal vision, and yet the eye movement pattern previously thought to be rare, was relatively common in Chinese people.

"There could be a number of explanations for this and further investigation is needed to fully understand why populations differ. It could be that culture - where we grow up, the education, work and social activities we are exposed to - influence these particular biological responses even though our physical make-up is the same.

"The other possibility is that there are basic differences in brain structure and function that produce the kind of behaviour we identified. Maps of the brain were developed many years ago and were largely based on European populations. This became the blueprint for brain structure, but there could be differences between various populations."

Scientists are now investigating eye movement in Chinese people born and living in Britain compared to Chinese populations born in China but now living in Britain. The study aims to further understanding into the cultural effects on eye movement behaviour.


Contact: Samantha Martin
University of Liverpool

Related medicine news :

1. Medical oncology recognized at EU level to allow free movement of doctors
2. Hand Movements May Give Clues to ADHD Severity
3. Munich researchers demonstrate rocking movement in the anti-stress protein Hsp90
4. Eye movements and sight distance reveal how drivers negotiate winding roads
5. Cartoon Network's MOVE IT MOVEMENT TOUR Stops in Seattle Market
6. Scientists Find Cause of Involuntary Mirror Movements
7. Pro-Life Movement Vows to Replace Members From Pro-life Districts Who Voted for the Most Pro-Abortion Bill Ever Passed by Congress
8. New Social Media Site Launches Movement To Inspire The World!
9. MOVE IT! Join the Movement to End Multiple Sclerosis During MS Awareness Week March 8-14, 2010
10. Visual Cues that Improve Walking for People with Movement Disorders - Study Shows Small Change in Arrangement Can Make a Big Difference in Improvement Gained
11. Be Well Book Launches National Movement to Help Moms Instill Healthy Habits and End Childhood Obesity
Post Your Comments:
(Date:11/25/2015)... ... November 25, 2015 , ... On November 10, 2015, Bohrer Brady, LLC filed ... on behalf of a home health care worker who provided companionship services for the ... care workers employed by Humana, Inc., Humana at Home, Inc., and SeniorBridge Family Companies ...
(Date:11/25/2015)... ... November 25, 2015 , ... Lakeview Health, ... country to celebrate their sobriety and show through pictures what a positive difference ... photos this Thanksgiving with the hashtag #FacesOfGratitude on their Facebook, Twitter, and Instagram ...
(Date:11/25/2015)... (PRWEB) , ... November 25, 2015 , ... ... for physicians and athletic programs, launches new Wimbledon Athletics Facebook page ... testing young athletes for unsuspected cardiac abnormalities. About 2,000 people under the age ...
(Date:11/25/2015)... ... ... Smiles by Stevens is pleased to announce the addition of Botox® for ... aware of the benefits of Botox® in the treatment of moderate facial wrinkling, few ... and pain as a result of Jaw Tension, TMJ (temporo-mandibular joint) disorder, and Bruxism ...
(Date:11/25/2015)... ... November 25, 2015 , ... Brillianteen, McGaw YMCA’s student-produced ... in its 65th Anniversary Brillianteen Revue, scheduled for March 4-6, 2016. Auditions for ... years, Brillianteen has been a treasured tradition for numerous families in the Evanston ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... , November 26, 2015 ... of the "2016 Future Horizons and ... Abuse Testing Market: Supplier Shares, Country Segment ... to their offering. --> ... "2016 Future Horizons and Growth Strategies ...
(Date:11/26/2015)... 2015 ... the  "2016 Future Horizons and Growth ... Monitoring (TDM) Market: Supplier Shares, Country ...  report to their offering.  --> ... addition of the  "2016 Future Horizons ...
(Date:11/26/2015)... , November 26, 2015 ... the addition of the  "2016 Future ... European Cell Surface Marker Testing Market: ...  report to their offering.  --> ... addition of the  "2016 Future Horizons ...
Breaking Medicine Technology: