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:1/19/2017)... ... January 19, 2017 , ... Each year, the ... a conference where hundreds of surgeons from over fifteen different countries come together ... cosmetic breast augmentation to breast reconstruction for breast cancer patients, teaching ...
(Date:1/18/2017)... (PRWEB) , ... January 18, 2017 , ... From a ... are released almost daily linking gut health to chronic disease, mental health and general ... Year ” as an important resolution to consider. , For one Charlottesville restaurant, good ...
(Date:1/18/2017)... , ... January 18, 2017 , ... The V Foundation ... Team V, its official endurance training and fundraising team, to compete in the Boston ... welcomes those inspired to finish the world’s oldest annual marathon to join Team V ...
(Date:1/18/2017)... ... 2017 , ... At Hallmark Nameplate, their commitment to quality is what sets ... ISO 13485. This certification is another way they are making constant strides to provide ... they need. , The ISO 13485 Certification is a major accomplishment for Hallmark Nameplate ...
(Date:1/18/2017)... ... January 18, 2017 , ... Rollerblade®, the ... Technology (ABT), an innovative braking system that allows skaters of all levels to ... of the biggest concerns of beginner and intermediate skaters – learning how to ...
Breaking Medicine News(10 mins):
(Date:1/18/2017)... SHANGHAI , Jan. 18, 2017 In ... of revolution, which is where the Upgrade of ... year of the 13th Five-Year Plan for Economic and Social ... (the 13th Five-Year Plan), and the state council of ... the "13th Five-Year" national strategic emerging industry development plan, identifying ...
(Date:1/18/2017)... , January 18, 2017 Ximbio, ... to share research resources, has opened its first North American ... ... marks an expansion for Ximbio following its launch in October ... Research Technology (CRT), the commercialization arm of the foundation Cancer ...
(Date:1/18/2017)... Authority Chinese Food and Drug Administration CSL ... Institute Food and Drug Administration FORT ... Glaxo Smith Klein GlaxoWellcome Global Influenza ... Immune Targeting Systems Indian Association of ... Johnson & Johnson Krka Pharmaceuticals Medicago ...
Breaking Medicine Technology: