Navigation Links
Innovative technique gives vision researchers insight into how people recognize faces
Date:3/16/2011

Rockville, MD It is no surprise to scientists that the largest social network on the web is called Facebook. Identifying people by their face is fundamental to our social interactions, one of the primary reasons vision researchers are trying to find out how our brain processes facial identity.

In a study recently published in the Journal of Vision, scientists used an original approach a method that "shakes" the brain gently and repeatedly by making an image appear and disappear at a constant rate to evaluate its sensitivity to perceiving facial identity. The technique is called steady-state visual evoked potential (SSVEP).

"If we measure global human brain activity when one face is viewed, it cannot be differentiated from brain activity when another face is viewed," said author Bruno Rossion, PhD, a researcher at the Institute of Psychology and Institute of Neuroscience, Universit Catholique de Louvain, Belgium. "This is why we relied on a method in which brain activity is compared between repetition of the same face and the presentation of different faces in succession."

During the experiment, 12 participants were presented with a series of faces appearing at a frequency of 3.5 faces per second. The result showed the brain signal at that specific frequency only was much larger when a sequence of different faces was presented at that rate than when an identical face was repeated.

The research team was positively surprised by the resulting large size of the difference between the two conditions, obtained only after one minute and a half of testing, and was equally astonished that the difference in conditions did not exist when the faces were inverted. The study also confirmed that the region for face perception lies primarily in the posterior part of the brain's right hemisphere.

The ability to recognize a face is a common problem in cases of sudden onset of posterior brain damage, neurodegenerative disorders like Alzheimer disease and other forms of dementia and social disorders such as autism. Rossion points out that an advantage of using this highly sensitive SSVEP methods is that it can be used and compared objectively in different human populations adults, infants, children, neurological patients, people with long-life face recognition impairments or autism - without requiring complex instructions and a long testing duration.

"Face recognition involves the most complex aspects of perception and memory and, for this reason, understanding how it works has large-scale implication," Rossion adds. "Ultimately, through a better understanding of this function, we will make tremendous progress in our understanding of how the brain works in general, develop tools to detect its dysfunction and hopefully help remedy it."


'/>"/>

Contact: Katrina Norfleet
knorfleet@arvo.org
240-221-2924
Association for Research in Vision and Ophthalmology
Source:Eurekalert

Related medicine news :

1. University Hospitals Case Medical Center testing innovative heat therapy for premature ejaculation
2. Innovative International Healthcare Partnership established at Arizona State University
3. Innovative virtual reality exposure therapy shows promise for returning troops
4. 3rd international conference on innovative approaches in head and neck oncology
5. Cancer prevention expert honored for innovative tobacco research
6. Elsevier launches innovative online radiology board review product
7. UC Davis surgeons test innovative device in patient with swallowing disorder
8. Experts say direct-to-consumer genetic tests need innovative oversight
9. John Theurer Cancer Center to present innovative research at 2 surgical meetings
10. Elsevier introduces SciVerse, an innovative platform for accelerating science
11. Innovative imaging system may boost speed and accuracy in treatment of heart rhythm disorder
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/5/2016)... ... 05, 2016 , ... Qrono Inc. , a specialty ... collaboration with the Australian critical medicine company, Phebra Pty Ltd. , to ... medicines can offer improved therapeutic benefits over oral formulations, including better bioavailability, improved ...
(Date:5/5/2016)... ... , ... Einstein Medical is proud to announce that it has ... commentary at the 2016 ASCRS/ASOA Symposium and Congress, which takes place in New Orleans, ... Refractive Surgery and the American Society of Ophthalmic Administrations will be held at the ...
(Date:5/5/2016)... Francisco, CA (PRWEB) , ... May 05, 2016 , ... This weekend, from Friday, May ... will take on steep California terrain at the first Team Semper Fi Mountain Bike Camp, ... Joining them will be mountain bike legends Mark Weir and Jason Moeschler, who’ll share pro ...
(Date:5/5/2016)... ... May 05, 2016 , ... ... Business Journalists , led by the Wharton School’s most prominent professors, help ... one-day program at the Wharton School’s San Francisco campus will feature Wharton ...
(Date:5/5/2016)... ... May 05, 2016 , ... Derrin Doty Group has ... of Bremerton, Port Orchard and communities west of Seattle. The insurance provider’s caring team ... local girl who died suddenly due to complications from the flu, that they have ...
Breaking Medicine News(10 mins):
(Date:5/4/2016)... , May 4, 2016 ... of the  "Global Actinic Keratosis Market and ... their offering.       (Logo: ... Market and Competitive Landscape Highlights 2016, provides ... Actinic Keratosis epidemiology, Actinic Keratosis market valuations ...
(Date:5/3/2016)... Research and Markets has announced ... Therapy Market Outlook 2020" report to their offering. ... ,Recombinant technology has improved significantly in past years due ... in coming years. Many cancer drugs have been developed ... are also expected to be developed with its help. ...
(Date:5/3/2016)... , May 3, 2016   BIOTRONIK , ... today announced Food and Drug Administration (FDA) approval ... that provides heart failure patients with access to ... also have remote monitoring with daily automatic transmission ... heart rate in response to physiological demands. ...
Breaking Medicine Technology: