Perceived surface slant is systematically biased in the actively-generated optic flow.

Humans make systematic errors in the 3D interpretation of the optic flow in both passive and active vision. These systematic distortions can be predicted by a biologically-inspired model which disregards self-motion information resulting from head movements (Caudek, Fantoni, & Domini 2011). Here...

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Autores principales:	Carlo Fantoni, Corrado Caudek, Fulvio Domini
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d61c43d152a949d7b002221b211e4c61
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id	oai:doaj.org-article:d61c43d152a949d7b002221b211e4c61
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spelling	oai:doaj.org-article:d61c43d152a949d7b002221b211e4c612021-11-18T07:23:40ZPerceived surface slant is systematically biased in the actively-generated optic flow.1932-620310.1371/journal.pone.0033911https://doaj.org/article/d61c43d152a949d7b002221b211e4c612012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22479473/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Humans make systematic errors in the 3D interpretation of the optic flow in both passive and active vision. These systematic distortions can be predicted by a biologically-inspired model which disregards self-motion information resulting from head movements (Caudek, Fantoni, & Domini 2011). Here, we tested two predictions of this model: (1) A plane that is stationary in an earth-fixed reference frame will be perceived as changing its slant if the movement of the observer's head causes a variation of the optic flow; (2) a surface that rotates in an earth-fixed reference frame will be perceived to be stationary, if the surface rotation is appropriately yoked to the head movement so as to generate a variation of the surface slant but not of the optic flow. Both predictions were corroborated by two experiments in which observers judged the perceived slant of a random-dot planar surface during egomotion. We found qualitatively similar biases for monocular and binocular viewing of the simulated surfaces, although, in principle, the simultaneous presence of disparity and motion cues allows for a veridical recovery of surface slant.Carlo FantoniCorrado CaudekFulvio DominiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 3, p e33911 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Carlo Fantoni Corrado Caudek Fulvio Domini Perceived surface slant is systematically biased in the actively-generated optic flow.
description	Humans make systematic errors in the 3D interpretation of the optic flow in both passive and active vision. These systematic distortions can be predicted by a biologically-inspired model which disregards self-motion information resulting from head movements (Caudek, Fantoni, & Domini 2011). Here, we tested two predictions of this model: (1) A plane that is stationary in an earth-fixed reference frame will be perceived as changing its slant if the movement of the observer's head causes a variation of the optic flow; (2) a surface that rotates in an earth-fixed reference frame will be perceived to be stationary, if the surface rotation is appropriately yoked to the head movement so as to generate a variation of the surface slant but not of the optic flow. Both predictions were corroborated by two experiments in which observers judged the perceived slant of a random-dot planar surface during egomotion. We found qualitatively similar biases for monocular and binocular viewing of the simulated surfaces, although, in principle, the simultaneous presence of disparity and motion cues allows for a veridical recovery of surface slant.
format	article
author	Carlo Fantoni Corrado Caudek Fulvio Domini
author_facet	Carlo Fantoni Corrado Caudek Fulvio Domini
author_sort	Carlo Fantoni
title	Perceived surface slant is systematically biased in the actively-generated optic flow.
title_short	Perceived surface slant is systematically biased in the actively-generated optic flow.
title_full	Perceived surface slant is systematically biased in the actively-generated optic flow.
title_fullStr	Perceived surface slant is systematically biased in the actively-generated optic flow.
title_full_unstemmed	Perceived surface slant is systematically biased in the actively-generated optic flow.
title_sort	perceived surface slant is systematically biased in the actively-generated optic flow.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/d61c43d152a949d7b002221b211e4c61
work_keys_str_mv	AT carlofantoni perceivedsurfaceslantissystematicallybiasedintheactivelygeneratedopticflow AT corradocaudek perceivedsurfaceslantissystematicallybiasedintheactivelygeneratedopticflow AT fulviodomini perceivedsurfaceslantissystematicallybiasedintheactivelygeneratedopticflow
_version_	1718423565044285440

Perceived surface slant is systematically biased in the actively-generated optic flow.

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