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  Whole-body somatotopic maps in the cerebellum revealed with 7T fMRI

Boillat, Y., Bazin, P.-L., & van der Zwaag, W. (2020). Whole-body somatotopic maps in the cerebellum revealed with 7T fMRI. NeuroImage, 211: 116624. doi:10.1016/j.neuroimage.2020.116624.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-A99D-C Version Permalink: http://hdl.handle.net/21.11116/0000-0005-E61B-A
Genre: Journal Article

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 Creators:
Boillat, Yohan1, Author
Bazin, Pierre-Louis2, 3, Author              
van der Zwaag, Wietske4, 5, Author
Affiliations:
1Laboratory for Functional and Metabolic Imaging, Swiss Federal Institute of Technology in Lausanne, Switzerland, ou_persistent22              
2Integrative Model-Based Cognitive Neuroscience Research Unit (IMCN), University of Amsterdam, the Netherlands, ou_persistent22              
3Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_2205649              
4Centre d'Imagerie Biomédicale (CIBM), Centre hospitalier universitaire vaudois, Lausanne, Switzerland, ou_persistent22              
5Spinoza Centre for Neuroimaging, University of Amsterdam, the Netherlands, ou_persistent22              

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Free keywords: Cerebellum; Somatotopy; Somatosensory; Motor; fMRI; High spatial resolution
 Abstract: The cerebellum is known to contain a double somatotopic body representation. While the anterior lobe body map has shown a robust somatotopic organization in previous fMRI studies, the representations in the posterior lobe have been more difficult to observe and are less precisely characterized. In this study, participants went through a simple motor task asking them to move either the eyes (left-right guided saccades), tongue (left-right movement), thumbs, little fingers or toes (flexion). Using high spatial resolution fMRI data acquired at ultra-high field (7T), with special care taken to obtain sufficient B1 over the entire cerebellum and a cerebellar surface reconstruction facilitating visual inspection of the results, we were able to precisely map the somatotopic representations of these five distal body parts on both subject- and group-specific cerebellar surfaces. The anterior lobe (including lobule VI) showed a consistent and robust somatotopic gradient. Although less robust, the presence of such a gradient in the posterior lobe, from Crus II to lobule VIIIb, was also observed. Additionally, the eyes were also strongly represented in Crus I and the oculomotor vermis. Overall, crosstalk between the different body part representations was negligible. Taken together, these results show that multiple representations of distal body parts are present in the cerebellum, across many lobules, and they are organized in an orderly manner.

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Language(s): eng - English
 Dates: 2019-12-202019-10-042020-02-062020-02-112020-05-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.neuroimage.2020.116624
Other: Epub ahead of print
PMID: 32058002
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Funding organization : Centre d’Imagerie BioMédicale (CIBM)
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Funding program : -
Funding organization : Leenaards Foundation
Project name : -
Grant ID : #31003A_14998 ; #31003A_153070
Funding program : Swiss National Science Foundation Grant
Funding organization : Swiss National Science Foundation

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Title: NeuroImage
Source Genre: Journal
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Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 211 Sequence Number: 116624 Start / End Page: - Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166