نتایج جستجو برای: crowding distance

تعداد نتایج: 244654  

Journal: :Current Biology 2013
Denis G. Pelli Patrick Cavanagh

Immediately before a large eye movement, a target object is crowded by clutter near the target's future location. This new finding, from a recent study, shows that the brain's remapping for the anticipated eye movement unavoidably combines features from the target's current and future retinal locations into one perceptual object.

Journal: :Journal of vision 2014
Einat Rashal Yaffa Yeshurun

Previous studies have shown crowding alleviation when target and flankers similarity is reduced. However, in the case of contrast dissimilarity, the findings were inconsistent. This study examined the effect of stimulus contrast, particularly contrast dissimilarity, on both overall performance under crowded conditions and the critical distance-the spatial extent of crowding. To this end, we mea...

Journal: :Current Biology 2009
Tingting Liu Yi Jiang Xinghuai Sun Sheng He

When embedded in adjacent distractors, a target becomes more difficult to perceive. The neural mechanism for this ubiquitous visual crowding effect remains unresolved. Stimuli presented on opposite sides of the vertical meridian initially project to different hemispheres, whereas stimuli with the same spatial distance but presented to one side of the vertical meridian project to the same hemisp...

2013
Michele Cassetta Federica Altieri Alfonso Di Mambro Gabriella Galluccio Ersilia Barbato

OBJECTIVE To determine the prevalence of impacted mandibular second molar (MM2) and the association between MM2 impaction and crowding. The clinical significance of the angle between first and second mandibular molar and of the space between the first mandibular molar (MM1) and the anterior margin of mandibular ramus in MM2 impaction were also evaluated. MATERIAL AND METHODS In this retrospec...

Journal: :Vision Research 2008
Susana T.L. Chung Roger W. Li Dennis M. Levi

To test whether first- and second-order stimuli are processed independently in amblyopic vision, we measured thresholds for identifying a target letter flanked by two letters for all combinations of first- and second-order targets and flankers. We found that (1) the magnitude of crowding is greater for second- than for first-order letters for target and flankers of the same order type; (2) subs...

Journal: :Journal of Industrial and Management Optimization 2022

Data Envelopment Analysis models have proven ability to classify decision making units into two efficient and inefficient sets. Although ones can be sorted by the value of efficiency score, ranking has always been a challenging subject in DEA. Various methods, terms implementation nature, proposed rank DMUs. A novel method based on diversity variety frontier is presented this study. Firstly, cr...

2013
Bilge Sayim Patrick Cavanagh

Crowding is the impairment of peripheral target perception by nearby flankers. A number of recent studies have shown that crowding shares many features with grouping. Here, we investigate whether effects of crowding and grouping on target perception are related by asking whether they operate over the same spatial scale. A target letter T had two sets of flanking Ts of varying orientations. The ...

Journal: :Physical review letters 2011
Jun Soo Kim Vadim Backman Igal Szleifer

We investigate structural alterations of random-loop polymers due to changes in the crowding condition, as a model to study environmental effects on the structure of chromosome subcompartments. The polymer structure is changed in a nonmonotonic fashion with an increasing density of crowders: condensed at small volume fractions; decondensed at high crowding volume fractions. The nonmonotonic beh...

Journal: :Journal of vision 2016
Michael H Herzog Bilge Sayim Mauro Manassi Vitaly Chicherov

In crowding, the perception of a target deteriorates in the presence of neighboring elements. Crowding is not a new research area but has fascinated researchers for centuries, dating back to 1738, as outlined in Strasburger and Wade (2015). The classic example of crowding is reading where the letters of a word mutually crowd each other. Thus, not surprisingly, crowding research has started off ...

Journal: :Vision Research 2014
Pan Liu Leila Montaser-Kouhsari Hong Xu

Prolonged exposure to a visual stimulus, such as a happy face, biases the perception of subsequently presented neutral face toward sad perception, the known face adaptation. Face adaptation is affected by visibility or awareness of the adapting face. However, whether it is affected by discriminability of the adapting face is largely unknown. In the current study, we used crowding to manipulate ...

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