期刊
NEUROLOGY
卷 85, 期 6, 页码 517-520出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1212/WNL.0000000000001828
关键词
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资金
- NICHD of the NIH [R01HD069776]
- Sidney R. Baer Jr. Foundation
- NIH [R01HD069776, R01NS073601, R21 MH099196, R21 NS082870, R21 NS085491, R21 HD07616]
- Harvard Catalyst | The Harvard Clinical and Translational Science Center (NCRR)
- Harvard Catalyst | The Harvard Clinical and Translational Science Center (NCATS NIH) [UL1 RR025758]
Objective:The nonlesioned motor cortex (M1(NL)) is thought to be hyperexcitable in patients with subacute or chronic stroke and offers a promising therapeutic target. However, whether M1(NL) excitability behaves the same for subcortical and cortical strokes is unknown. The aim of the present study was to determine whether cortical, or purely subcortical, strokes have a different effect on M1(NL) excitability.Methods:We looked for correlations between the Fugl-Meyer (FM) score and M1(NL) resting motor threshold (RMTNL) in 34 stroke survivors classified according to lesion location (cortico-subcortical or purely subcortical). In addition to the FM, the Wolf Motor Score and motor power were measured.Results:FM correlated with RMTNL for subcortical (r = 0.82; p = 0.001) but not for cortical strokes (r = 0.11; p = 0.62). Likewise, Wolf Motor Score (r = -0.62; p = 0.03) and motor power (r = 0.64; p = 0.023) were correlated with RMTNL for the subcortical group, but not for the cortical group.Conclusion:We show that the impact on M1(NL) depends on lesion location and conclude that protocols aimed at reducing M1(NL) cortical excitability may be worth exploring for subcortical but not for cortical stroke.
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