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Functional Magnetic Resonance Imaging of Motor Cortex: Hemispheric Asymmetry and Handedness
Abstract
A hemispheric asymmetry in the functional activation of the human motor cortex during contralateral (C) and ipsilateral (I) finger movements, especially in right-handed subjects, was documented with nuclear magnetic resonance imaging at high field strength (4 tesla). Whereas the right motor cortex was activated mostly during contralateral finger movements in both right-handed (C/I mean area of activation = 36.8) and left-handed (C/I = 29.9) subjects, the left motor cortex was activated substantially during ipsilateral movements in left-handed subjects (C/I = 5.4) and even more so in right-handed subjects (C/I = 1.3).
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Cites
The assessment and analysis of handedness: The Edinburgh inventory
Oldfield, R. C. (1971) · Neuropsychologia · doi:10.1016/0028-3932(71)90067-4 · Cited by 35,900
Cited by
Motor imagery activates primary sensorimotor area in humans
Pfurtscheller, G., & Neuper, C. (1997) · Neuroscience Letters · doi:10.1016/s0304-3940(97)00889-6 · Cited by 1,051
A functional MRI study of subjects recovered from hemiparetic stroke
Cramer, S. C., Nelles, G., Benson, R. R., Kaplan, J. D., Parker, R. A., Kwong, K. K., Kennedy, D. N., Finklestein, S. P., & Rosen, B. R. (1997) · Stroke · doi:10.1161/01.str.28.12.2518 · Cited by 1,019
Lotze, M., Montoya, P., Erb, M., Hülsmann, E., Flor, H., Klose, U., Birbaumer, N., & Grodd, W. (1999) · Journal of Cognitive Neuroscience · doi:10.1162/089892999563553 · Cited by 993
Repairing the human brain after stroke: I. Mechanisms of spontaneous recovery
Cramer, S. C. (2008) · Annals of Neurology · doi:10.1002/ana.21393 · Cited by 875
Swain, R. A., Harris, A. B., Wiener, E. C., Dutka, M. V., Morris, H. D., Theien, B. E., Konda, S., Engberg, K., Lauterbur, P. C., & Greenough, W. T. (2003) · Neuroscience · doi:10.1016/s0306-4522(02)00664-4 · Cited by 655
Metadata
- Authors
- Kim, S.-G., Ashe, J., Hendrich, K., Ellermann, J. M., Merkle, H., Uğurbil, K., & Georgopoulos, A. P.
- Venue
- Science
- Published
- 1993-07-30
- Volume
- 261
- Issue
- 5121
- Pages
- 615-617
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2028343350
- Cited by
- 983
- References
- 1
- FWCI
- 24.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kim, S.-G., Ashe, J., Hendrich, K., Ellermann, J. M., Merkle, H., Uğurbil, K., & Georgopoulos, A. P. (1993). Functional Magnetic Resonance Imaging of Motor Cortex: Hemispheric Asymmetry and Handedness. Science. https://doi.org/10.1126/science.8342027
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
