Selectivity to translational egomotion in human brain motion areas.

The optic flow generated when a person moves through the environment can be locally decomposed into several basic components, including radial, circular, translational and spiral motion. Since their analysis plays an important part in the visual perception and control of locomotion and posture it is...

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Autores principales:	Sabrina Pitzalis, Stefano Sdoia, Alessandro Bultrini, Giorgia Committeri, Francesco Di Russo, Patrizia Fattori, Claudio Galletti, Gaspare Galati
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/804b9cf807f649d8bdf38d09bea4e698
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id	oai:doaj.org-article:804b9cf807f649d8bdf38d09bea4e698
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spelling	oai:doaj.org-article:804b9cf807f649d8bdf38d09bea4e6982021-11-18T07:50:29ZSelectivity to translational egomotion in human brain motion areas.1932-620310.1371/journal.pone.0060241https://doaj.org/article/804b9cf807f649d8bdf38d09bea4e6982013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23577096/?tool=EBIhttps://doaj.org/toc/1932-6203The optic flow generated when a person moves through the environment can be locally decomposed into several basic components, including radial, circular, translational and spiral motion. Since their analysis plays an important part in the visual perception and control of locomotion and posture it is likely that some brain regions in the primate dorsal visual pathway are specialized to distinguish among them. The aim of this study is to explore the sensitivity to different types of egomotion-compatible visual stimulations in the human motion-sensitive regions of the brain. Event-related fMRI experiments, 3D motion and wide-field stimulation, functional localizers and brain mapping methods were used to study the sensitivity of six distinct motion areas (V6, MT, MST+, V3A, CSv and an Intra-Parietal Sulcus motion [IPSmot] region) to different types of optic flow stimuli. Results show that only areas V6, MST+ and IPSmot are specialized in distinguishing among the various types of flow patterns, with a high response for the translational flow which was maximum in V6 and IPSmot and less marked in MST+. Given that during egomotion the translational optic flow conveys differential information about the near and far external objects, areas V6 and IPSmot likely process visual egomotion signals to extract information about the relative distance of objects with respect to the observer. Since area V6 is also involved in distinguishing object-motion from self-motion, it could provide information about location in space of moving and static objects during self-motion, particularly in a dynamically unstable environment.Sabrina PitzalisStefano SdoiaAlessandro BultriniGiorgia CommitteriFrancesco Di RussoPatrizia FattoriClaudio GallettiGaspare GalatiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 4, p e60241 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sabrina Pitzalis Stefano Sdoia Alessandro Bultrini Giorgia Committeri Francesco Di Russo Patrizia Fattori Claudio Galletti Gaspare Galati Selectivity to translational egomotion in human brain motion areas.
description	The optic flow generated when a person moves through the environment can be locally decomposed into several basic components, including radial, circular, translational and spiral motion. Since their analysis plays an important part in the visual perception and control of locomotion and posture it is likely that some brain regions in the primate dorsal visual pathway are specialized to distinguish among them. The aim of this study is to explore the sensitivity to different types of egomotion-compatible visual stimulations in the human motion-sensitive regions of the brain. Event-related fMRI experiments, 3D motion and wide-field stimulation, functional localizers and brain mapping methods were used to study the sensitivity of six distinct motion areas (V6, MT, MST+, V3A, CSv and an Intra-Parietal Sulcus motion [IPSmot] region) to different types of optic flow stimuli. Results show that only areas V6, MST+ and IPSmot are specialized in distinguishing among the various types of flow patterns, with a high response for the translational flow which was maximum in V6 and IPSmot and less marked in MST+. Given that during egomotion the translational optic flow conveys differential information about the near and far external objects, areas V6 and IPSmot likely process visual egomotion signals to extract information about the relative distance of objects with respect to the observer. Since area V6 is also involved in distinguishing object-motion from self-motion, it could provide information about location in space of moving and static objects during self-motion, particularly in a dynamically unstable environment.
format	article
author	Sabrina Pitzalis Stefano Sdoia Alessandro Bultrini Giorgia Committeri Francesco Di Russo Patrizia Fattori Claudio Galletti Gaspare Galati
author_facet	Sabrina Pitzalis Stefano Sdoia Alessandro Bultrini Giorgia Committeri Francesco Di Russo Patrizia Fattori Claudio Galletti Gaspare Galati
author_sort	Sabrina Pitzalis
title	Selectivity to translational egomotion in human brain motion areas.
title_short	Selectivity to translational egomotion in human brain motion areas.
title_full	Selectivity to translational egomotion in human brain motion areas.
title_fullStr	Selectivity to translational egomotion in human brain motion areas.
title_full_unstemmed	Selectivity to translational egomotion in human brain motion areas.
title_sort	selectivity to translational egomotion in human brain motion areas.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/804b9cf807f649d8bdf38d09bea4e698
work_keys_str_mv	AT sabrinapitzalis selectivitytotranslationalegomotioninhumanbrainmotionareas AT stefanosdoia selectivitytotranslationalegomotioninhumanbrainmotionareas AT alessandrobultrini selectivitytotranslationalegomotioninhumanbrainmotionareas AT giorgiacommitteri selectivitytotranslationalegomotioninhumanbrainmotionareas AT francescodirusso selectivitytotranslationalegomotioninhumanbrainmotionareas AT patriziafattori selectivitytotranslationalegomotioninhumanbrainmotionareas AT claudiogalletti selectivitytotranslationalegomotioninhumanbrainmotionareas AT gasparegalati selectivitytotranslationalegomotioninhumanbrainmotionareas
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Selectivity to translational egomotion in human brain motion areas.

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