Visual Crowding
Visual Crowding - Related Videos
10:23
Crowding
0 Views •
2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Human vision depends on light-sensitive neurons that are arranged in the back of the eye on a tissue called the retina. The neurons, called the rods and cones because of their shapes, are not uniformly distributed on the retina. Instead, there is a region in the center of the retina called the macula where cones are densely packed, and especially so in a central sub-region of the macula called the fovea. Outside the fovea there...
09:14
Improving 2D and 3D Skin In Vitro Models Using Macromolecular Crowding
0 Views •
Cited by 14 •
2016
We present a protocol to obtain cell-derived matrices rich in extracellular matrix proteins, using macromolecular crowders (MMC). In addition, we present a protocol which incorporates MMC in 3D organotypic skin co-culture generation, which reduces culture time while maintaining maturity of construct.
08:20
In Vitro Model of Human Cutaneous Hypertrophic Scarring using Macromolecular Crowding
0 Views •
Cited by 8 •
2020
This protocol describes the use of macromolecular crowding to create an in vitro human hypertrophic scar tissue model that resembles in vivo conditions. When cultivated in a crowded macromolecular environment, human skin fibroblasts exhibit phenotypes, biochemistry, physiology, and functional characteristics resembling scar tissue.
10:43
Single-Molecule Diffusion and Assembly on Polymer-Crowded Lipid Membranes
0 Views •
2022
Here, a protocol to perform and analyze the binding, mobility, and assembly of single molecules on artificial crowded lipid membranes using single-molecule total internal reflection fluorescence (smTIRF) microscopy is presented.
09:44
Methods to Test Visual Attention Online
0 Views •
Cited by 26 •
2015
To replicate laboratory settings, online data collection methods for visual tasks require tight control over stimulus presentation. We outline methods for the use of a web application to collect performance data on two tests of visual attention.
FAQs
The integration field determines the region in which nearby visual information can be combined with a target. When flankers enter this region, their features are processed together with the target rather than kept fully separate. This mechanism explains why peripheral vision can support awareness that an object is present while still limiting accurate identification of that object.
Visibility and identification are not identical outcomes. A person may still detect that a target occupies a location, but combined processing of the target and surrounding items can make its specific features harder to isolate. This distinction makes visual crowding useful for studying how visual attention and object recognition operate under the limits of peripheral vision.
Flankers are the nearby items whose features interact with those of the target. Their position relative to the target is important because crowding occurs when they fall within the target’s integration field. Examining this relationship helps psychologists investigate how surrounding scene elements influence recognition, rather than treating target identification as an isolated visual task.
A basic investigation presents a target with nearby surrounding items and evaluates whether the target can be recognized or identified. The arrangement is interpreted in relation to the target’s integration field, especially in peripheral vision. Comparing identification when surrounding items are present or absent can reveal how combined feature processing affects perceptual performance.
Reading and visual search require people to identify relevant objects or symbols while other visual information is present nearby. Visual crowding provides a framework for examining how surrounding items may interfere with that identification, particularly away from the center of vision. Its principles therefore connect basic research on peripheral vision with performance in visually complex tasks.
Interface elements placed near one another may create conditions in which surrounding information interferes with identifying a target, making crowding relevant to interface design. In psychology, the same principles also provide context for amblyopia, where impaired crowding may contribute to difficulty identifying objects in complex scenes. These applications link perceptual mechanisms with practical and clinical questions.