Zhang, Shunan ; Song, Man ; Yu, Angela J (2015)
A Bayesian hierarchical model of local-global processing: Visual crowding as a case-study.
37th Annual Meeting of the Cognitive Science Society (Cogsci 2015). Pasadena, California (23.07.2015-25.07.2015)
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
We explore the interaction between local-global information processing in visual perception, leveraging a visual phenomenon known as crowding, whereby the perception of a target stimulus is impaired by the presence of nearby flankers. The majority of established models explain the crowding effect in terms of local interactions. However, recent experimental results indicate that a classical crowding effect, the deterioration in the discrimination of a vernier stimulus embedded in a square, is alleviated by the presence of additional flanker squares (“uncrowding”). Here, we propose that crowding and uncrowding arise from cortical inferences about hierarchically organized groups, and formalize this concept using a hierarchical Bayesian model. We show that the model reproduces both crowding and uncrowding for flanked vernier discrimination. More generally, the model provides a normative explanation of how visual information might simultaneously flow bottom-up, top-down, and laterally, to allow the visual system to interactively process local and global features in the visual scene.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Zhang, Shunan ; Song, Man ; Yu, Angela J |
| Art des Eintrags: | Bibliographie |
| Titel: | A Bayesian hierarchical model of local-global processing: Visual crowding as a case-study |
| Sprache: | Englisch |
| Publikationsjahr: | 2015 |
| Ort: | Seattle |
| Verlag: | Cognitive Science Society |
| Buchtitel: | Proceedings of the Annual Meeting of the Cognitive Science Society |
| Band einer Reihe: | 37 |
| Veranstaltungstitel: | 37th Annual Meeting of the Cognitive Science Society (Cogsci 2015) |
| Veranstaltungsort: | Pasadena, California |
| Veranstaltungsdatum: | 23.07.2015-25.07.2015 |
| URL / URN: | https://cognitivesciencesociety.org/wp-content/uploads/2019/... |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | We explore the interaction between local-global information processing in visual perception, leveraging a visual phenomenon known as crowding, whereby the perception of a target stimulus is impaired by the presence of nearby flankers. The majority of established models explain the crowding effect in terms of local interactions. However, recent experimental results indicate that a classical crowding effect, the deterioration in the discrimination of a vernier stimulus embedded in a square, is alleviated by the presence of additional flanker squares (“uncrowding”). Here, we propose that crowding and uncrowding arise from cortical inferences about hierarchically organized groups, and formalize this concept using a hierarchical Bayesian model. We show that the model reproduces both crowding and uncrowding for flanked vernier discrimination. More generally, the model provides a normative explanation of how visual information might simultaneously flow bottom-up, top-down, and laterally, to allow the visual system to interactively process local and global features in the visual scene. |
| Fachbereich(e)/-gebiet(e): | 03 Fachbereich Humanwissenschaften 03 Fachbereich Humanwissenschaften > Institut für Psychologie |
| Hinterlegungsdatum: | 01 Nov 2023 08:59 |
| Letzte Änderung: | 16 Nov 2023 06:48 |
| PPN: | 513219498 |
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