Featured Research

from universities, journals, and other organizations

Real or fake? Research shows brain uses multiple clues for facial recognition

Date:
June 10, 2014
Source:
North Dakota State University
Summary:
Faces fascinate. We look for familiar or friendly ones in a crowd. And video game developers and movie animators strive to create faces that look real rather than fake. Determining how our brains decide what makes a face “human” and not artificial is a question researchers have been studying. New research shows that it takes more than eyes to make a face look human.

Real or fake? A study by researchers at North Dakota State University, Fargo, and the Center for Visual and Cognitive Neuroscience, found that when skin tone is negated, study participants had difficulty determining whether a face was real or artificial. Dr. Benjamin Balas, assistant professor of psychology, notes that it may take more than eyes to make a face look human. Study results show people combine information across many parts of the face to determine how alive it looks and the appearances of these regions may interact with each other.
Credit: NDSU Dr. Benjamin Balas Christopher Tonsager

Faces fascinate. Babies love them. We look for familiar or friendly ones in a crowd. And video game developers and movie animators strive to create faces that look real rather than fake. Determining how our brains decide what makes a face "human" and not artificial is a question Dr. Benjamin Balas of North Dakota State University, Fargo, and of the Center for Visual and Cognitive Neuroscience, studies in his lab. New research by Balas and NDSU graduate Christopher Tonsager, published online in the London-based journal Perception, shows that it takes more than eyes to make a face look human.

Researchers study the brain to learn how its specialized circuits process information in seconds to distinguish whether faces are real or fake. Balas and Tonsager note that people interact with artificial faces and characters in video games, watch them in movies, and see artificial faces used more widely as social agents in other settings. "Whether or not a face looks real determines a lot of things," said Balas, assistant professor of psychology. "Can it have emotions? Can it have plans and ideas? We wanted to know what information you use to decide if a face is real or artificial, since that first step determines a number of judgments that follow."

Results of the study show that people combine information across many parts of the face to make decisions about how "alive" it is, and that the appearances of these regions interact with each other. Previous research suggests that eyes are especially important for facial recognition. The NDSU study found, however, that when you're deciding if a face is real or artificial, the eyes and the skin both matter to about the same degree.

Balas and Tonsager, as an undergraduate researcher in psychology, recruited 45 study participants who were evaluated while viewing altered facial images. Tonsager cropped images of real faces so only the face and neck showed, without any hair. A program known as FaceGen Modeller was used to transform the images into 3D computer-generated models of faces. Photos were then computer manipulated into negative images. In two experiments, transformations to real and artificial faces were used to determine if contrast negation affected the ability to determine if a face was real or artificial, and whether the eyes make a disproportionate contribution to animacy discrimination relative to the rest of the face.

"We assumed that the eyes were the key in distinguishing real vs. computer generated, but to our surprise, the results were not significant enough for us to conclude this," said Tonsager. "However, we did find that when the skin tone is negated, it was more difficult for our participants to determine if it was a real or artificial face. The research leads us to conclude that the entire 'eye region' might play a substantial role in the distinction between real or artificial."

"Beyond telling us more about the distinction your brain makes between a face and a non-face, our results are also relevant to anybody who wants to develop life-like computer graphics," explained Balas. "Developing artificial faces that look real is a growing industry, and we know that artificial faces that aren't quite right can look downright creepy. Our work, both in the current paper and ongoing studies in the lab, has the potential to inform how designers create new and better artificial faces for a range of applications."

Balas and Tonsager also presented their research findings at the Vision Sciences Society 13th Annual Meeting, May 16-21 in St. Peterburg, Florida.

The research study of Balas and Tonsager was funded by North Dakota Experimental Program to Stimulate Competitive Research NSF #EPS-0814442 and Center of Biomedical Research Excellence Grant GM103505 from the National Institute of General Medical Sciences (NIGMS), a component of the National Institutes of Health (NIH).


Story Source:

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


Journal Reference:

  1. Benjamin Balas, Christopher Tonsager. Face animacy is not all in the eyes: Evidence from contrast chimeras. Perception, 2014; 43 (5): 355 DOI: 10.1068/p7696

Cite This Page:

North Dakota State University. "Real or fake? Research shows brain uses multiple clues for facial recognition." ScienceDaily. ScienceDaily, 10 June 2014. <www.sciencedaily.com/releases/2014/06/140610152745.htm>.
North Dakota State University. (2014, June 10). Real or fake? Research shows brain uses multiple clues for facial recognition. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2014/06/140610152745.htm
North Dakota State University. "Real or fake? Research shows brain uses multiple clues for facial recognition." ScienceDaily. www.sciencedaily.com/releases/2014/06/140610152745.htm (accessed July 25, 2014).

Share This




More Computers & Math News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mobile App Gives Tour of Battle of Atlanta Sites

Mobile App Gives Tour of Battle of Atlanta Sites

AP (July 25, 2014) Emory University's Center for Digital Scholarship has launched a self-guided mobile tour app to coincide with the 150th anniversary of the Civil War's Battle of Atlanta. (July 25) Video provided by AP
Powered by NewsLook.com
Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
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