Occipital cortex is modulated by transsaccadic changes in spatial frequency: an fMRI study

Abstract Previous neuroimaging studies have shown that inferior parietal and ventral occipital cortex are involved in the transsaccadic processing of visual object orientation. Here, we investigated whether the same areas are also involved in transsaccadic processing of a different feature, namely,...

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Autores principales:	Bianca R. Baltaretu, Benjamin T. Dunkley, W. Dale Stevens, J. Douglas Crawford
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8f3d4b6d8ba44fad95abb7a1143829de
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spelling	oai:doaj.org-article:8f3d4b6d8ba44fad95abb7a1143829de2021-12-02T18:27:49ZOccipital cortex is modulated by transsaccadic changes in spatial frequency: an fMRI study10.1038/s41598-021-87506-22045-2322https://doaj.org/article/8f3d4b6d8ba44fad95abb7a1143829de2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87506-2https://doaj.org/toc/2045-2322Abstract Previous neuroimaging studies have shown that inferior parietal and ventral occipital cortex are involved in the transsaccadic processing of visual object orientation. Here, we investigated whether the same areas are also involved in transsaccadic processing of a different feature, namely, spatial frequency. We employed a functional magnetic resonance imaging paradigm where participants briefly viewed a grating stimulus with a specific spatial frequency that later reappeared with the same or different frequency, after a saccade or continuous fixation. First, using a whole-brain Saccade > Fixation contrast, we localized two frontal (left precentral sulcus and right medial superior frontal gyrus), four parietal (bilateral superior parietal lobule and precuneus), and four occipital (bilateral cuneus and lingual gyri) regions. Whereas the frontoparietal sites showed task specificity, the occipital sites were also modulated in a saccade control task. Only occipital cortex showed transsaccadic feature modulations, with significant repetition enhancement in right cuneus. These observations (parietal task specificity, occipital enhancement, right lateralization) are consistent with previous transsaccadic studies. However, the specific regions differed (ventrolateral for orientation, dorsomedial for spatial frequency). Overall, this study supports a general role for occipital and parietal cortex in transsaccadic vision, with a specific role for cuneus in spatial frequency processing.Bianca R. BaltaretuBenjamin T. DunkleyW. Dale StevensJ. Douglas CrawfordNature 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 Bianca R. Baltaretu Benjamin T. Dunkley W. Dale Stevens J. Douglas Crawford Occipital cortex is modulated by transsaccadic changes in spatial frequency: an fMRI study
description	Abstract Previous neuroimaging studies have shown that inferior parietal and ventral occipital cortex are involved in the transsaccadic processing of visual object orientation. Here, we investigated whether the same areas are also involved in transsaccadic processing of a different feature, namely, spatial frequency. We employed a functional magnetic resonance imaging paradigm where participants briefly viewed a grating stimulus with a specific spatial frequency that later reappeared with the same or different frequency, after a saccade or continuous fixation. First, using a whole-brain Saccade > Fixation contrast, we localized two frontal (left precentral sulcus and right medial superior frontal gyrus), four parietal (bilateral superior parietal lobule and precuneus), and four occipital (bilateral cuneus and lingual gyri) regions. Whereas the frontoparietal sites showed task specificity, the occipital sites were also modulated in a saccade control task. Only occipital cortex showed transsaccadic feature modulations, with significant repetition enhancement in right cuneus. These observations (parietal task specificity, occipital enhancement, right lateralization) are consistent with previous transsaccadic studies. However, the specific regions differed (ventrolateral for orientation, dorsomedial for spatial frequency). Overall, this study supports a general role for occipital and parietal cortex in transsaccadic vision, with a specific role for cuneus in spatial frequency processing.
format	article
author	Bianca R. Baltaretu Benjamin T. Dunkley W. Dale Stevens J. Douglas Crawford
author_facet	Bianca R. Baltaretu Benjamin T. Dunkley W. Dale Stevens J. Douglas Crawford
author_sort	Bianca R. Baltaretu
title	Occipital cortex is modulated by transsaccadic changes in spatial frequency: an fMRI study
title_short	Occipital cortex is modulated by transsaccadic changes in spatial frequency: an fMRI study
title_full	Occipital cortex is modulated by transsaccadic changes in spatial frequency: an fMRI study
title_fullStr	Occipital cortex is modulated by transsaccadic changes in spatial frequency: an fMRI study
title_full_unstemmed	Occipital cortex is modulated by transsaccadic changes in spatial frequency: an fMRI study
title_sort	occipital cortex is modulated by transsaccadic changes in spatial frequency: an fmri study
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8f3d4b6d8ba44fad95abb7a1143829de
work_keys_str_mv	AT biancarbaltaretu occipitalcortexismodulatedbytranssaccadicchangesinspatialfrequencyanfmristudy AT benjamintdunkley occipitalcortexismodulatedbytranssaccadicchangesinspatialfrequencyanfmristudy AT wdalestevens occipitalcortexismodulatedbytranssaccadicchangesinspatialfrequencyanfmristudy AT jdouglascrawford occipitalcortexismodulatedbytranssaccadicchangesinspatialfrequencyanfmristudy
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Occipital cortex is modulated by transsaccadic changes in spatial frequency: an fMRI study

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