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Figure–Ground Segmentation and Biological Motion Perception in Peripheral Visual Field

Biological motion perception is a specific type of perceptual organization, during which a clear image of a moving human body is perceptually generated in virtue of certain core light dots representing the major joint movements. While the processes of biological motion perception have been studied e...

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Autores principales: Ceple, Ilze, Skilters, Jurgis, Lyakhovetskii, Vsevolod, Jurcinska, Inga, Krumina, Gunta
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10046209/
https://www.ncbi.nlm.nih.gov/pubmed/36979190
http://dx.doi.org/10.3390/brainsci13030380
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author Ceple, Ilze
Skilters, Jurgis
Lyakhovetskii, Vsevolod
Jurcinska, Inga
Krumina, Gunta
author_facet Ceple, Ilze
Skilters, Jurgis
Lyakhovetskii, Vsevolod
Jurcinska, Inga
Krumina, Gunta
author_sort Ceple, Ilze
collection PubMed
description Biological motion perception is a specific type of perceptual organization, during which a clear image of a moving human body is perceptually generated in virtue of certain core light dots representing the major joint movements. While the processes of biological motion perception have been studied extensively for almost a century, there is still a debate on whether biological motion task performance can be equally precise across all visual field or is central visual field specified for biological motion perception. The current study explores the processes of biological motion perception and figure–ground segmentation in the central and peripheral visual field, expanding the understanding of perceptual organization across different eccentricities. The method involved three different tasks of visual grouping: (1) a static visual grouping task, (2) a dynamic visual grouping task, and (3) a biological motion detection task. The stimuli in (1) and (2) were generated from 12–13 dots grouped by proximity and common fate, and, in (3), light dots representing human motion. All stimuli were embedded in static or dynamics visual noise and the threshold value for the number of noise dots in which the elements could still be grouped by proximity and/or common fate was determined. The results demonstrate that biological motion can be differentiated from the scrambled set of moving dots in a more intensive visual noise than static and dynamic visual grouping tasks. Furthermore, in all three visual tasks (static and dynamic grouping, and biological motion detection) the performance was significantly worse in the periphery than in the central visual field, and object magnification could not compensate for the reduced performance in any of the three grouping tasks. The preliminary results of nine participants indicate that (a) human motion perception involves specific perceptual processes, providing the high-accuracy perception of the human body and (b) the processes of figure–ground segmentation are governed by the bottom-up processes and the best performance can be achieved only when the object is demonstrated in the central visual field.
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spelling pubmed-100462092023-03-29 Figure–Ground Segmentation and Biological Motion Perception in Peripheral Visual Field Ceple, Ilze Skilters, Jurgis Lyakhovetskii, Vsevolod Jurcinska, Inga Krumina, Gunta Brain Sci Article Biological motion perception is a specific type of perceptual organization, during which a clear image of a moving human body is perceptually generated in virtue of certain core light dots representing the major joint movements. While the processes of biological motion perception have been studied extensively for almost a century, there is still a debate on whether biological motion task performance can be equally precise across all visual field or is central visual field specified for biological motion perception. The current study explores the processes of biological motion perception and figure–ground segmentation in the central and peripheral visual field, expanding the understanding of perceptual organization across different eccentricities. The method involved three different tasks of visual grouping: (1) a static visual grouping task, (2) a dynamic visual grouping task, and (3) a biological motion detection task. The stimuli in (1) and (2) were generated from 12–13 dots grouped by proximity and common fate, and, in (3), light dots representing human motion. All stimuli were embedded in static or dynamics visual noise and the threshold value for the number of noise dots in which the elements could still be grouped by proximity and/or common fate was determined. The results demonstrate that biological motion can be differentiated from the scrambled set of moving dots in a more intensive visual noise than static and dynamic visual grouping tasks. Furthermore, in all three visual tasks (static and dynamic grouping, and biological motion detection) the performance was significantly worse in the periphery than in the central visual field, and object magnification could not compensate for the reduced performance in any of the three grouping tasks. The preliminary results of nine participants indicate that (a) human motion perception involves specific perceptual processes, providing the high-accuracy perception of the human body and (b) the processes of figure–ground segmentation are governed by the bottom-up processes and the best performance can be achieved only when the object is demonstrated in the central visual field. MDPI 2023-02-22 /pmc/articles/PMC10046209/ /pubmed/36979190 http://dx.doi.org/10.3390/brainsci13030380 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ceple, Ilze
Skilters, Jurgis
Lyakhovetskii, Vsevolod
Jurcinska, Inga
Krumina, Gunta
Figure–Ground Segmentation and Biological Motion Perception in Peripheral Visual Field
title Figure–Ground Segmentation and Biological Motion Perception in Peripheral Visual Field
title_full Figure–Ground Segmentation and Biological Motion Perception in Peripheral Visual Field
title_fullStr Figure–Ground Segmentation and Biological Motion Perception in Peripheral Visual Field
title_full_unstemmed Figure–Ground Segmentation and Biological Motion Perception in Peripheral Visual Field
title_short Figure–Ground Segmentation and Biological Motion Perception in Peripheral Visual Field
title_sort figure–ground segmentation and biological motion perception in peripheral visual field
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10046209/
https://www.ncbi.nlm.nih.gov/pubmed/36979190
http://dx.doi.org/10.3390/brainsci13030380
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