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  Spatial resolution and imaging encoding fMRI settings for optimal cortical and subcortical motor somatotopy in the human brain

Marquis, R., Muller, S., Lorio, S., Rodriguez-Herreros, B., Melie-Garcia, L., Kherif, F., Lutti, A., & Draganski, B. (2019). Spatial resolution and imaging encoding fMRI settings for optimal cortical and subcortical motor somatotopy in the human brain. Frontiers in Neuroscience, 13:. doi:10.3389/fnins.2019.00571.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-0003-DD5B-F 版のパーマリンク: https://hdl.handle.net/21.11116/0000-0004-638A-1
資料種別: 学術論文

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Marquis_2019.pdf (出版社版), 3MB
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https://hdl.handle.net/21.11116/0000-0003-DD5D-D
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Marquis_2019.pdf
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作成者

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 作成者:
Marquis, Renaud 1, 2, 著者
Muller, Sandrine 3, 4, 5, 著者
Lorio, Sara 1, 5, 著者
Rodriguez-Herreros, Borja 1, 6, 著者
Melie-Garcia, Lester 1, 著者
Kherif, Ferath 1, 著者
Lutti, Antoine 1, 著者
Draganski, Bogdan1, 7, 著者           
所属:
1Département des Neurosciences Cliniques, Laboratoire de Recherche en Neuroimagerie (LREN), Centre hospitalier universitaire vaudois, Lausanne, Switzerland, ou_persistent22              
2Department of Clinical Neurosciences, School of Medicine, University of Geneva, Switzerland, ou_persistent22              
3Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA, ou_persistent22              
4Stanley Center for Psychiatric Research, Broad Institute, Cambridge, MA, USA, ou_persistent22              
5UCL Great Ormond Street Institute of Child Health, University College London, United Kingdom, ou_persistent22              
6Sensory-Motor Laboratory (SeMoLa), Jules-Gonin Eye Hospital, University of Lausanne, Switzerland, ou_persistent22              
7Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              

内容説明

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キーワード: Functional magnetic resonance imaging; segregation; Image resolution; BOLD sensitivity; Subcortical areas
 要旨: There is much controversy about the optimal trade-off between blood-oxygen-level-dependent (BOLD) sensitivity and spatial precision in experiments on brain’s topology properties using functional magnetic resonance imaging (fMRI). The sparse empirical evidence and regional specificity of these interactions pose a practical burden for the choice of imaging protocol parameters. Here, we test in a motor somatotopy experiment the impact of fMRI spatial resolution on differentiation between body part representations in cortex and subcortical structures. Motor somatotopy patterns were obtained in a block-design paradigm and visually cued movements of face, upper and lower limbs at 1.5, 2, and 3 mm spatial resolution. The degree of segregation of the body parts’ spatial representations was estimated using a pattern component model. In cortical areas, we observed the same level of segregation between somatotopy maps across all three resolutions. In subcortical areas the degree of effective similarity between spatial representations was significantly impacted by the image resolution. The 1.5 mm 3D EPI and 3 mm 2D EPI protocols led to higher segregation between motor representations compared to the 2 mm 3D EPI protocol. This finding could not be attributed to differential BOLD sensitivity or delineation of functional areas alone and suggests a crucial role of the image encoding scheme – i.e., 2D vs. 3D EPI. Our study contributes to the field by providing empirical evidence about the impact of acquisition protocols for the delineation of somatotopic areas in cortical and sub-cortical brain regions.

資料詳細

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言語: eng - English
 日付: 2018-09-192019-05-202019-06-11
 出版の状態: オンラインで出版済み
 ページ: -
 出版情報: -
 目次: -
 査読: 査読あり
 識別子（DOI, ISBNなど）: DOI: 10.3389/fnins.2019.00571
 学位: -

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Project information

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Project name : NCCR Synapsy
Grant ID : 32003B_159780
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Funding organization : Swiss National Science Foundation
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Funding organization : Leenaards Foundation
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Funding organization : Foundation Synapsis
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Funding organization : Roger De Spoelberch Foundation
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Funding organization : Partridge Foundations
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Grant ID : GN2214
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Funding organization : Henry Smith Charity and Action Medical Research
Project name : Sinergia project
Grant ID : CRSII5_170873
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Funding organization : Swiss National Science Foundation
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Funding organization : National Institute for Health Research Biomedical Research Centre

出版物 1

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出版物名: Frontiers in Neuroscience
  その他 : Front Neurosci
種別: 学術雑誌
 著者・編者:
所属:
出版社, 出版地: Lausanne, Switzerland : Frontiers Research Foundation
ページ: - 巻号: 13 通巻号: 571 開始・終了ページ: - 識別子（ISBN, ISSN, DOIなど）: ISSN: 1662-4548
ISSN: 1662-453X
CoNE: https://pure.mpg.de/cone/journals/resource/1662-4548