Navigation Links
Face facts: People don't stand out in crowds
Date:1/18/2008

Rockville, MD Why is it difficult to pick out even a familiar face in a crowd? We all experience this, but the phenomenon has been poorly understood until now. The results of a recent study may have implications for individuals with face-recognition disorders and visual-attention related ailments and eventually could help scientists develop an artificial visual system that approaches the sophistication of human visual perception.

The study is part of the recently completed Journal of Vision (www.journalofvision.org) special issue titled Crowding: Including illusory conjunctions, surround suppression, and attention (www.journalofvision.org/7/2). Crowding is a failure to recognize an individual object in a cluttered environment. It may be due to one of the shortcuts our brains use to help us make sense of the vast amount of visual information we take in every second.

This special issue contains 25 articles devoted exclusively to crowding and related topics. Other noteworthy studies include Effect of letter spacing on visual span and reading speed which links reading speed to the number of letters we can recognize without moving our eyes. The impact of contrast and character size on reading speed is examined in The case for the visual span as a sensory bottleneck in reading.

The authors conducted five experiments to measure participants recognition of a familiar face or house that was located in a crowded display of other faces or houses. They found that face recognition is more difficult when target faces are surrounded by upright faces (as seen in crowds). This effect was not present for images of houses, or when upside-down faces were used as targets. The results indicate that searching for a face in a crowd is difficult in part because images of upright faces interfere with each other.

This kind of crowding is well documented in simple features, such as slanted lines or edges. But faces are a complex stimulus. Many researchers believe the importance of faces in our lives lend them special status in the brain: they are processed not as a collection of these lines and edges, as many objects are, but holistically, as a single image. The authors in this study were the first to show that crowding also occurs for these high-level stimuli.

Crowding may reveal one of the fundamental mechanisms the visual system uses to consolidate or filter a great deal of information into a very few meaningful chunks, explained Dr. Whitney. If vision scientists and engineers are to develop an efficient and realistic artificial visual system, they will almost certainly benefit from using the human visual system as a model. An understanding of the visual systems heuristics, shortcuts and limitations such as crowding will likely prove essential in designing effective artificial vision.


'/>"/>

Contact: Joanne Olson
jolson@arvo.org
240-221-2923
Association for Research in Vision and Ophthalmology
Source:Eurekalert

Related medicine news :

1. UCLA researchers identify markers that may predict diabetes in still-healthy people
2. Are too many people diagnosed as depressed?
3. Bipolar Diagnoses in Younger People Show Huge Increase
4. Preparation for Natural Disasters Critical for People With Diabetes, Chronic Medical Conditions
5. Drug-free treatments offer hope for older people in pain
6. Wanting a bite of everything: Hungry people crave more variety
7. Academy releases emergency preparedness tools to enable millions more people to shelter in place
8. Different HIV rates among gay men and straight people not fully explained by sexual behavior
9. Peoples United Financial CEO Has Surgery
10. The American Pain Foundation (APF) and The HealthCentral Network Collaborate to Develop Enhanced Internet Resources for People with Pain
11. Major differences revealed in how local authorities in the UK support disabled people
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2016)... ... June 24, 2016 , ... ... feeding the Frederick area economy by obtaining investment capital for emerging technology companies. ... 2½ years that have already resulted in more than a million dollars of ...
(Date:6/24/2016)... ... June 24, 2016 , ... Finally, a bruise cream that really ... cream can be incorporated into the post-surgical treatment plans of a variety of other ... dermaka cream is very effective for bruising and causes a rapid resolution of bruising ...
(Date:6/24/2016)... ... June 24, 2016 , ... Dr. Seema Daulat, a native Texan and University ... Lamar location as of July 13, 2016. , Dr. Daulat earned her Doctorate of ... she regularly volunteered at the Agape Clinic serving Dallas’ underprivileged community. , Following medical ...
(Date:6/23/2016)... ... 23, 2016 , ... SyncDog, Inc. , the leading ... is featured in the current issue of Silicon Review magazine. Silicon ... technology solutions and features them in their magazine. The magazine allows top-level executives ...
(Date:6/23/2016)... ... 23, 2016 , ... The U.S. Supreme Court decision on immigration has significant ... The Senior Citizens League (TSCL) . “President Obama’s executive actions on immigration would ... who worked in this country illegally, even though the newly - issued green cards ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 2016  Arkis BioSciences, a leading innovator in ... durable cerebrospinal fluid treatments, today announced it has ... is led by Innova Memphis, followed by Angel ... investors.  Arkis, new financing will accelerate the commercialization ... release of its in-licensed Endexo® technology. ...
(Date:6/23/2016)... BEVERLY HILLS, Calif. , June 23, 2016 ... faced the many challenges of the current process. Many of ... option because of the technical difficulties and high laboratory costs ... would have to offer it at such a high cost ... to afford it. Dr. Parsa Zadeh , ...
(Date:6/23/2016)... 2016 Roche (SIX: RO, ROG; OTCQX: RHHBY) ... Elecsys BRAHMS PCT (procalcitonin) assay as a dedicated testing ... With this clearance, Roche is the first IVD company ... for sepsis risk assessment and management. PCT ... PCT levels in blood can aid clinicians in assessing ...
Breaking Medicine Technology: