Article (Scientific journals)
The heterogeneity of the left dorsal premotor cortex evidenced by multimodal connectivity-based parcellation and functional characterization
Genon, Sarah; Reid, Andrew; Li, Hai et al.
2018In NeuroImage, 170, p. 400-411
Peer Reviewed verified by ORBi
 

Files


Full Text
Genon_NIMG-16-2509R2_LeftPMdPackage.pdf
Author preprint (7.03 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Abstract :
[en] Despite the common conception of the dorsal premotor cortex (PMd) as a single brain region, its diverse connectivity profiles and behavioral heterogeneity argue for a differentiated organization of the PMd. A previous study revealed that the right PMd is characterized by a rostro-caudal and a ventro-dorsal distinction dividing it into five subregions: rostral, central, caudal, ventral and dorsal. The present study assessed whether a similar organization is present in the left hemisphere, by capitalizing on a multimodal data-driven approach combining connectivity-based parcellation (CBP) based on meta-analytic modeling, resting- state functional connectivity, and probabilistic diffusion tractography. The resulting PMd modules were then characterized based on multimodal functional connectivity and a quantitative analysis of associated behavioral functions. Analyzing the clusters consistent across all modalities revealed an organization of the left PMd that mirrored its right counterpart to a large degree. Again, caudal, central and rostral modules reflected a cognitive- motor gradient and a premotor eye-field was found in the ventral part of the left PMd. In addition, a distinct module linked to abstract cognitive functions was observed in the rostro- ventral left PMd across all CBP modalities, implying greater differentiation of higher cognitive functions for the left than the right PMd.
Disciplines :
Neurosciences & behavior
Author, co-author :
Genon, Sarah ;  Université de Liège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn.
Reid, Andrew
Li, Hai
Fan, Lingzhong
Müller, Veronika
Cieslik, Edna
Hoffstaedter, Felix
Langner, Robert
Grefkes, Christian
Laird, Angela
Fox, Peter
Jiang, Tianzi
Amunts, Katrin
Eickhoff, Simon
More authors (4 more) Less
Language :
English
Title :
The heterogeneity of the left dorsal premotor cortex evidenced by multimodal connectivity-based parcellation and functional characterization
Publication date :
15 April 2018
Journal title :
NeuroImage
ISSN :
1053-8119
eISSN :
1095-9572
Publisher :
Elsevier Science, Orlando, United States - Florida
Volume :
170
Pages :
400-411
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 03 March 2017

Statistics


Number of views
165 (13 by ULiège)
Number of downloads
356 (7 by ULiège)

Scopus citations®
 
57
Scopus citations®
without self-citations
40
OpenCitations
 
47

Bibliography


Similar publications



Contact ORBi