HOME >> BIOLOGY >> NEWS
Vision: how perceptions survive in the face of ambiguity

Because we live in a visually complex world, one of the major tasks of vision is to resolve ambiguous information into a stable image of our surroundings. By presenting subjects with differing versions of visually ambiguous images, researchers have identified the factors that are important for perceptual stabilization, a process that allows the visual system to overcome conflicting information and maintain a steady perception of an image.

Visual perception is generally accurate and stable. However, when a visual stimulus provides conflicting or insufficient information, perception can be bi-stable or even multi-stable that is, the way an image is perceived by the viewer can change or switch back and forth over time. By studying the visual system's solution when faced with such ambiguous conditions, Dr. Xiangchuan Chen from the University of Science and Technology of China and Dr. Sheng He from the University of Minnesota sought to tease out clues to the underlying mechanisms of visual perception.

Earlier research had shown that perception can be stabilized when the ambiguous visual stimuli were presented intermittently. Memory of the recent perceptual experience had been proposed to explain this stabilization effect. But the nature of this "perceptual memory" has remained unclear.

In the new work, Drs. Chen and He showed that the mechanism responsible for perceptual stabilization was independent of the memory of object identity, including various qualities possessed by an object, such as color. Using a rotating cylinder image that prompts bi-stable perception, they showed that changing the color, the moving speed of the dots on the cylinder, the size, or the stereo depth of the cylinder had no or minimal effect on the perceptual stabilization of the rotating cylinder. In contrast, stabilization depended on the stimulus location where in the visual field the object fell.

In a second set of tests, ambiguity in the pres
'"/>

Contact: Heidi Hardman
hhardman@cell.com
617-397-2879
Cell Press
7-Jun-2004


Page: 1 2

Related biology news :

1. New physical activity opinion survey demonstrates perceptions do not meet reality
2. New discovery may help transplants survive
3. Chipmunks descended from ancestors that survived last ice age, scientists say
4. Helping coral reefs survive climate change
5. Mechanism that enables fetus to survive in mother under study
6. Common microbes survive pressures equal to those found at 50 kilometers inside the Earths crust
7. Rock-eating microbes survive in deep ocean off Peru
8. Hitchhiking molecules could have survived fiery comet collisions with Earth, UC Berkeley experiment shows
9. Helping energy conservation projects survive the budget axe
10. Deadly to cattle and humans, prions may help other organisms survive, researchers find
11. Life in the inferno: researchers identify factors that determine where microorganisms can survive in the hellish world deep underground

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Vision how perceptions survive the face ambiguity

(Date:10/29/2014)... is open for the Society of Interventional ... 2015 is the one place where interventional ... health care professionals can come together to ... technologies being presented, discussed and tested. ... invasive, image-guided medicine, SIR 2015 will feature ...
(Date:10/29/2014)... chemicals from household and industrial products are in the ... for most of them, scientists have yet to determine ... first step toward doing that by estimating which substances ... is published in the ACS journal Environmental Science ... note that the risks to human health of any ...
(Date:10/29/2014)... LANSING, Mich. – As bodies decompose, their types ... the clues they provide could mean the difference ... , Michigan State University is using a more ... help Detroit death-scene investigators examine these changing populations. ... as geographical location of death, gender, race, socioeconomic ...
Breaking Biology News(10 mins):SIR 2015: Interventional radiology shapes tomorrow's medicine 2MSU partners with Detroit to investigate death scenes 2
(Date:10/30/2014)... 30, 2014 A new report, commissioned by ... takes an in-depth look at Indiana,s ... resulted over two different time frames: 1993 to 2002 ... of future opportunities for investment growth.  The Life ... report shows gains in innovation dollars as well as ...
(Date:10/30/2014)... 2014) – The severe flooding that devastated a wide ... destructive if the bridges, roads and other infrastructure had ... from the University of Colorado Denver. , "People need ... Jimmy Kim, PhD, associate professor of structural engineering at ... and lead author the study. "There is an assumption ...
(Date:10/27/2014)... -- The Italian company Roadrunnerfoot has ... its artificial "lower limb", after the German giant ...      (Photo: http://photos.prnewswire.com/prnh/20141027/713097 ) , ... judgement has arrived: Roadrunnerfoot, the small Italian company ... prostheses with composite materials, has won against global ...
(Date:10/27/2014)... 2014 The “Molecular Diagnostic Market ... Technology (PCR, INAAT, DNA Sequencing), End User (Hospital, ... - Global Forecast to 2018” provides a detailed ... current market trends, and strategies impacting the global ... forecasts of the revenue and share analysis. , ...
Breaking Biology Technology:New report shows Indiana's gains in life sciences innovation capital outpace the nation 2New report shows Indiana's gains in life sciences innovation capital outpace the nation 3New report shows Indiana's gains in life sciences innovation capital outpace the nation 4New report shows Indiana's gains in life sciences innovation capital outpace the nation 5CU Denver study says upgrading infrastructure could reduce flood damage 2Italian Lower Limb Prosthesis Company Wins Lawsuit Against German Giant Ottobock 2Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 2Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 3Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 4Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 5
Cached News: