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A demonstration of the crowding effect. Fixate on the "x" and attempt to identify the central (or single) letter appearing to the right. The presence of flankers should make the task more difficult.

Crowding is a perceptual phenomenon where the recognition of objects (or graphemes) presented away from the fovea is impaired by the presence of other neighbouring objects (sometimes called "flankers").[1] It has been suggested that crowding occurs due to mandatory integration of the crowded objects by a texture-processing neural mechanism.[2]

Crowding deficits have been specifically found in neuropsychiatric disorders such as schizophrenia and autism and may have profound clinical implications in these disorders.[3]

References [edit]

  1. ^ Levi D (February 2008). "Crowding - an essential bottleneck for object recognition: a mini-review". Vision Research 48 (5): 635–654. doi:10.1016/j.visres.2007.12.009. 
  2. ^ Parkes L, Lund J, Angelucci A, Solomon JA & Morgan M (2001). "Compulsory averaging of crowded orientation signals in human vision". Nature Neuroscience 4 (7): 739–744. doi:10.1038/89532. 
  3. ^ Kraehenmann, Rainer; Vollenweider FX, Seifritz E, Kometer M (2012). "Crowding deficits in the visual periphery of schizophrenia patients". PLoS One 7 (9). doi:10.1371/journal.pone.0045884. 



Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Crowding — Please support Wikipedia.
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7298 news items

 
Los Angeles Times
Mon, 17 Jun 2013 13:35:32 -0700

For the second month in a row, Brown's lawyers say the governor is "drafting legislative language" to take other steps to reduce crowding, including to keep more inmates in private prisons out of state, lease beds from county jails, and allow inmates ...
 
WRTV Indianapolis
Sun, 16 Jun 2013 12:15:04 -0700

Jail crowding raises concerns in Johnson County. generic_jail_1354111818504.JPG. Regular Photo Size. Posted: 06/16/2013. Last Updated: 1 day ago. FRANKLIN, Ind. - A rising jail population is causing concern in Johnson County as the summer months, ...
 
Chicago Sun-Times
Mon, 17 Jun 2013 16:18:35 -0700

People charged with nonviolent crimes, but who don't have money to make bail, spend weeks or months awaiting trial. Costs to the taxpayers are soaring, and they could go far higher if a federal court orders the county to build a new facility to ease ...
 
Minneapolis Star Tribune
Mon, 17 Jun 2013 05:44:36 -0700

On 494, it's 15 minutes in each direction between Hwy. 169 and Cedar Avenue. Look for a crash on westbound 494 on the right shoulder at 24th Avenue. It's still 20 to 25 minutes from Hwy. 101 to 494/94 on eastbound 94 through Rogers and Maple Grove.
 
NBCNews.com (blog)
Thu, 13 Jun 2013 06:10:20 -0700

Dear to the hearts of tourists visiting Rome are its picturesque piazzas dotted with cafés and restaurants, charming spots where they can enjoy a coffee or aperitif while taking in the architecture and local culture. But the five main piazzas in the ...
 
Herald & Review
Sun, 16 Jun 2013 06:10:06 -0700

Corrections shuffles prison inmates to ease crowding. Print Email. 2013-06-15T15:27:00Z Corrections shuffles prison inmates to ease crowdingThe Associated Press The Associated Press. 4 minutes ago • Associated Press. (0) Comments. CHESTER ...
 
FOX19
Sun, 16 Jun 2013 05:50:34 -0700

FRANKLIN, Ind. (AP) - A rising number of inmates at the Johnson County jail is forcing officials to take steps to ease crowding amid worries that an expansion might be necessary. Sheriff Doug Cox tells the Daily Journal (http://bit.ly/10bXji2 ) the ...
 
TechCrunch
Thu, 13 Jun 2013 03:22:58 -0700

Along with Skype, WhatsApp is the granddaddy of the mobile messaging app space. But despite its relative great age (~47 months), certainly compared to the myriad messaging newcomers, it appears to be continuing to build usage momentum. Earlier today ...
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