Variability in stroke motor outcome is explained by structural and functional integrity of the motor system
| Autor: | Bernhard Ross, Malcolm A. Binns, Timothy K. Lam, J. Jean Chen, Sandra E. Black, Takako Fujioka, Kie Honjo, Donald T. Stuss, Joyce L. Chen, Deirdre R. Dawson |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male medicine.medical_specialty Pyramidal Tracts lcsh:Medicine Article Upper Extremity 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Motor system medicine Connectome Humans 030212 general & internal medicine lcsh:Science Stroke Motor skill Aged Multidisciplinary medicine.diagnostic_test Resting state fMRI business.industry lcsh:R Motor Cortex Magnetic resonance imaging Middle Aged medicine.disease Magnetic Resonance Imaging medicine.anatomical_structure Motor Skills Corticospinal tract lcsh:Q Female business human activities 030217 neurology & neurosurgery Motor cortex |
| Zdroj: | Scientific Reports Scientific Reports, Vol 8, Iss 1, Pp 1-11 (2018) |
| ISSN: | 2045-2322 |
| Popis: | Biomarkers that represent the structural and functional integrity of the motor system enable us to better assess motor outcome post-stroke. The degree of overlap between the stroke lesion and corticospinal tract (CST Injury) is a measure of the structural integrity of the motor system, whereas the left-to-right motor cortex resting state connectivity (LM1-RM1 rs-connectivity) is a measure of its functional integrity. CST Injury and LM1-RM1 rs-connectivity each individually correlate with motor outcome post-stroke, but less is understood about the relationship between these biomarkers. Thus, this study investigates the relationship between CST Injury and LM1-RM1 rs-connectivity, individually and together, with motor outcome. Twenty-seven participants with upper limb motor deficits post-stroke completed motor assessments and underwent MRI at one time point. CST Injury and LM1-RM1 rs-connectivity were derived from T1-weighted and resting state functional MRI scans, respectively. We performed hierarchical multiple regression analyses to determine the contribution of each biomarker in explaining motor outcome. The interaction between CST Injury and LM1-RM1 rs-connectivity does not significantly contribute to the variability in motor outcome. However, inclusion of both CST Injury and LM1-RM1 rs-connectivity explains more variability in motor outcome, than either alone. We suggest both biomarkers provide distinct information about an individual’s motor outcome. |
| Databáze: | OpenAIRE |
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