fMRI responses of the brain during active and passive movements in left-handed subjects
- Authors: Zhavoronkova L.A.1, Boldyreva G.N.1, Kuptsova S.V.2, Sharova E.V.1, Smirnov A.S.3, Pronin I.N.3
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Affiliations:
- Institute of Higher Nervous Activity and Neurophysiology
- Center of Speech Pathology and Neurorehabilitation
- Burdenko Research Center of Neurosurgery
- Issue: Vol 43, No 2 (2017)
- Pages: 191-198
- Section: Article
- URL: https://journals.rcsi.science/0362-1197/article/view/177152
- DOI: https://doi.org/10.1134/S0362119717010108
- ID: 177152
Cite item
Abstract
The hemodynamic (magnetic resonance imaging, fMRI, 3T) brain responses were studied in 15 left-handed healthy subjects performing active and passive movements of the dominant and non-dominant hands. Group and individual fMRI responses to the motor load were analyzed. It was found that, during the active movements of dominant and non-dominant hands, the main activation cluster appeared in the preand postcentral gyrus of the contralateral hemisphere and which topographically similar during active and passive movements. The activation cluster of greater volume was identified in these areas; the response was more diffused during the non-dominant hand movements in comparison with the dominant hand. During passive movements, the cortical activation clusters of a smaller volume in comparison with the active movements were found, which was expressed most clearly during the performance of non-dominant hand movements and could reflect the weakening of the control from the cortical structures in these conditions.
About the authors
L. A. Zhavoronkova
Institute of Higher Nervous Activity and Neurophysiology
Author for correspondence.
Email: LZhavor@nsi.ru
Russian Federation, Moscow
G. N. Boldyreva
Institute of Higher Nervous Activity and Neurophysiology
Email: LZhavor@nsi.ru
Russian Federation, Moscow
S. V. Kuptsova
Center of Speech Pathology and Neurorehabilitation
Email: LZhavor@nsi.ru
Russian Federation, Moscow
E. V. Sharova
Institute of Higher Nervous Activity and Neurophysiology
Email: LZhavor@nsi.ru
Russian Federation, Moscow
A. S. Smirnov
Burdenko Research Center of Neurosurgery
Email: LZhavor@nsi.ru
Russian Federation, Moscow
I. N. Pronin
Burdenko Research Center of Neurosurgery
Email: LZhavor@nsi.ru
Russian Federation, Moscow