Gravitational effects of scene information in object localization

Abstract We effortlessly interact with objects in our environment, but how do we know where something is? An object’s apparent position does not simply correspond to its retinotopic location but is influenced by its surrounding context. In the natural environment, this context is highly complex, and...

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Autores principales:	Anna Kosovicheva, Peter J. Bex
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6844cb16a389420491e3b840fb51df34
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spelling	oai:doaj.org-article:6844cb16a389420491e3b840fb51df342021-12-02T18:25:03ZGravitational effects of scene information in object localization10.1038/s41598-021-91006-82045-2322https://doaj.org/article/6844cb16a389420491e3b840fb51df342021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91006-8https://doaj.org/toc/2045-2322Abstract We effortlessly interact with objects in our environment, but how do we know where something is? An object’s apparent position does not simply correspond to its retinotopic location but is influenced by its surrounding context. In the natural environment, this context is highly complex, and little is known about how visual information in a scene influences the apparent location of the objects within it. We measured the influence of local image statistics (luminance, edges, object boundaries, and saliency) on the reported location of a brief target superimposed on images of natural scenes. For each image statistic, we calculated the difference between the image value at the physical center of the target and the value at its reported center, using observers’ cursor responses, and averaged the resulting values across all trials. To isolate image-specific effects, difference scores were compared to a randomly-permuted null distribution that accounted for any response biases. The observed difference scores indicated that responses were significantly biased toward darker regions, luminance edges, object boundaries, and areas of high saliency, with relatively low shared variance among these measures. In addition, we show that the same image statistics were associated with observers’ saccade errors, despite large differences in response time, and that some effects persisted when high-level scene processing was disrupted by 180° rotations and color negatives of the originals. Together, these results provide evidence for landmark effects within natural images, in which feature location reports are pulled toward low- and high-level informative content in the scene.Anna KosovichevaPeter J. BexNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anna Kosovicheva Peter J. Bex Gravitational effects of scene information in object localization
description	Abstract We effortlessly interact with objects in our environment, but how do we know where something is? An object’s apparent position does not simply correspond to its retinotopic location but is influenced by its surrounding context. In the natural environment, this context is highly complex, and little is known about how visual information in a scene influences the apparent location of the objects within it. We measured the influence of local image statistics (luminance, edges, object boundaries, and saliency) on the reported location of a brief target superimposed on images of natural scenes. For each image statistic, we calculated the difference between the image value at the physical center of the target and the value at its reported center, using observers’ cursor responses, and averaged the resulting values across all trials. To isolate image-specific effects, difference scores were compared to a randomly-permuted null distribution that accounted for any response biases. The observed difference scores indicated that responses were significantly biased toward darker regions, luminance edges, object boundaries, and areas of high saliency, with relatively low shared variance among these measures. In addition, we show that the same image statistics were associated with observers’ saccade errors, despite large differences in response time, and that some effects persisted when high-level scene processing was disrupted by 180° rotations and color negatives of the originals. Together, these results provide evidence for landmark effects within natural images, in which feature location reports are pulled toward low- and high-level informative content in the scene.
format	article
author	Anna Kosovicheva Peter J. Bex
author_facet	Anna Kosovicheva Peter J. Bex
author_sort	Anna Kosovicheva
title	Gravitational effects of scene information in object localization
title_short	Gravitational effects of scene information in object localization
title_full	Gravitational effects of scene information in object localization
title_fullStr	Gravitational effects of scene information in object localization
title_full_unstemmed	Gravitational effects of scene information in object localization
title_sort	gravitational effects of scene information in object localization
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/6844cb16a389420491e3b840fb51df34
work_keys_str_mv	AT annakosovicheva gravitationaleffectsofsceneinformationinobjectlocalization AT peterjbex gravitationaleffectsofsceneinformationinobjectlocalization
_version_	1718378042886193152

Gravitational effects of scene information in object localization

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