Mixture model investigation of the inner–outer asymmetry in visual crowding reveals a heavier weight towards the visual periphery
| Autor: | Amit Yashar, Adi Shechter |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Science media_common.quotation_subject Geometry Asymmetry Article 050105 experimental psychology Young Adult 03 medical and health sciences 0302 clinical medicine Orientation Orientation (geometry) Human behaviour Humans Attention 0501 psychology and cognitive sciences media_common Mathematics Analysis of Variance Multidisciplinary 05 social sciences Models Theoretical Mixture model Crowding Pattern Recognition Visual Space Perception Visual information processing Medicine Female Perception Visual Fields Algorithms Photic Stimulation Psychomotor Performance 030217 neurology & neurosurgery |
| Zdroj: | Scientific Reports Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-021-81533-9 |
| Popis: | Crowding, the failure to identify a peripheral item in clutter, is an essential bottleneck in visual information processing. A hallmark characteristic of crowding is the inner-outer asymmetry in which the outer flanker (more eccentric) produces stronger interference than the inner one (closer to the fovea). We tested the contribution of the inner-outer asymmetry to the pattern of crowding errors in a typical radial crowding display in which both flankers are presented simultaneously on the horizontal meridian. In two experiments, observers were asked to estimate the orientation of a Gabor target. Instead of the target, observers reported the outer flanker much more frequently than the inner one. When the target was the outer Gabor, crowding was reduced. Furthermore, when there were four flankers, two on each side of the target, observers misreported the outer flanker adjacent to the target, not the outermost flanker. Model comparisons suggested that orientation crowding reflects sampling over a weighted sum of the represented features, in which the outer flanker is more heavily weighted compared to the inner one. Our findings reveal a counterintuitive phenomenon: in a radial arrangement of orientation crowding, within a region of selection, the outer item dominates appearance more than the inner one. |
| Databáze: | OpenAIRE |
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