Panoramic Uncertainty in Vertical Perception

Judgments of the orientation of a visual line with respect to earth vertical are affected by panoramic visual cues. This is illustrated by the rod-and-frame effect (RFE), the finding that the perceived orientation of a luminous rod is biased by the orientation of a surrounding squared frame. In this...

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Autores principales:	Janny C. Stapel, W. Pieter Medendorp
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	multisensory integration (MSI) subjective visual vertical (SVV) Bayesian vision vestibular rod-and-frame Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429
Acceso en línea:	https://doaj.org/article/a7437e2d60f84608bbb13de1bf7d7d79
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spelling	oai:doaj.org-article:a7437e2d60f84608bbb13de1bf7d7d792021-11-17T04:50:22ZPanoramic Uncertainty in Vertical Perception1662-514510.3389/fnint.2021.738768https://doaj.org/article/a7437e2d60f84608bbb13de1bf7d7d792021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fnint.2021.738768/fullhttps://doaj.org/toc/1662-5145Judgments of the orientation of a visual line with respect to earth vertical are affected by panoramic visual cues. This is illustrated by the rod-and-frame effect (RFE), the finding that the perceived orientation of a luminous rod is biased by the orientation of a surrounding squared frame. In this study, we tested how the uncertainty of frame orientation affects the RFE by asking upright or tilted participants to psychometrically judge the orientation of a briefly flashed rod contained within either a circular frame, a squared frame, or either of two intermediate frame forms, called squircles, presented in various orientations. Results showed a cyclical modulation of frame-induced bias across the range of the square and squircular frame orientations. The magnitude of this bias increased with increasing squaredness of the frame, as if the more unequivocal the orientation cues of the frame, the larger the reliance on them for rod orientation judgments. These findings are explained with a Bayesian optimal integration model in which participants flexibly weigh visual panoramic cues, depending on their orientation reliability, and non-visual cues in the perception of vertical.Janny C. StapelJanny C. StapelW. Pieter MedendorpFrontiers Media S.A.articlemultisensory integration (MSI)subjective visual vertical (SVV)Bayesianvisionvestibularrod-and-frameNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571Neurology. Diseases of the nervous systemRC346-429ENFrontiers in Integrative Neuroscience, Vol 15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	multisensory integration (MSI) subjective visual vertical (SVV) Bayesian vision vestibular rod-and-frame Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429
spellingShingle	multisensory integration (MSI) subjective visual vertical (SVV) Bayesian vision vestibular rod-and-frame Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429 Janny C. Stapel Janny C. Stapel W. Pieter Medendorp Panoramic Uncertainty in Vertical Perception
description	Judgments of the orientation of a visual line with respect to earth vertical are affected by panoramic visual cues. This is illustrated by the rod-and-frame effect (RFE), the finding that the perceived orientation of a luminous rod is biased by the orientation of a surrounding squared frame. In this study, we tested how the uncertainty of frame orientation affects the RFE by asking upright or tilted participants to psychometrically judge the orientation of a briefly flashed rod contained within either a circular frame, a squared frame, or either of two intermediate frame forms, called squircles, presented in various orientations. Results showed a cyclical modulation of frame-induced bias across the range of the square and squircular frame orientations. The magnitude of this bias increased with increasing squaredness of the frame, as if the more unequivocal the orientation cues of the frame, the larger the reliance on them for rod orientation judgments. These findings are explained with a Bayesian optimal integration model in which participants flexibly weigh visual panoramic cues, depending on their orientation reliability, and non-visual cues in the perception of vertical.
format	article
author	Janny C. Stapel Janny C. Stapel W. Pieter Medendorp
author_facet	Janny C. Stapel Janny C. Stapel W. Pieter Medendorp
author_sort	Janny C. Stapel
title	Panoramic Uncertainty in Vertical Perception
title_short	Panoramic Uncertainty in Vertical Perception
title_full	Panoramic Uncertainty in Vertical Perception
title_fullStr	Panoramic Uncertainty in Vertical Perception
title_full_unstemmed	Panoramic Uncertainty in Vertical Perception
title_sort	panoramic uncertainty in vertical perception
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/a7437e2d60f84608bbb13de1bf7d7d79
work_keys_str_mv	AT jannycstapel panoramicuncertaintyinverticalperception AT jannycstapel panoramicuncertaintyinverticalperception AT wpietermedendorp panoramicuncertaintyinverticalperception
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Panoramic Uncertainty in Vertical Perception

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