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- Title
Hemispheric Asymmetry of Supplementary Motor Area Proper: A Functional Connectivity Study of the Motor Network.
- Authors
Dinomais, Mickael; Chinier, Eva; Richard, Isabelle; Ricalens, Emmanuel; Aubé, Christophe; The Tich, Sylvie N'Guyen; Minassian, Aram Ter; N'Guyen The Tich, Sylvie; Ter Minassian, Aram
- Abstract
Cerebral asymmetry is a common feature of human functions. However, there are discrepancies in the literature about functional hemispheric asymmetries in the supplementary motor area (SMA), specifically in the posterior part (SMA-proper). We used resting state functional connectivity MRI to investigate the left-right asymmetries of the functional networks associated with primary motor cortex (M1) and SMA-proper using a "seed"-based correlation analysis in 30 healthy right-handed subjects. We showed that left M1 was more connected with areas involved in the motor system than right M1, and that right SMA-proper had more functional connections than its left counterpart. Our results are in agreement with a leftward asymmetry for M1 connectivity, whereas there is a rightward asymmetry of the SMA-proper connectivity.
- Subjects
BRAIN function localization; MAGNETIC resonance imaging of the brain; MOTOR cortex; BRAIN physiology; STATISTICAL correlation; FRONTAL lobe; NEURAL pathways; BRAIN mapping; CEREBRAL dominance; MAGNETIC resonance imaging; PHYSIOLOGY
- Publication
Motor Control, 2016, Vol 20, Issue 1, p33
- ISSN
1087-1640
- Publication type
journal article
- DOI
10.1123/mc.2014-0076