The effect of transcranial magnetic stimulation on the motor-evoked potentials of the suprahyoid muscles
10.3760/cma.j.issn.0254-1424.2015.012.004
- VernacularTitle:经颅磁刺激对健康受试者舌骨上肌群运动诱发电位的影响
- Author:
Lisheng JIANG
;
Ting ZHANG
;
Guozhen LIN
;
Jie LI
;
Tuo LIN
;
Zulin DOU
;
Yue LAN
- Publication Type:Journal Article
- Keywords:
Theta-burst stimulation;
Suprahyoid muscles;
Motor-evoked potentials;
Homeostatic plasticity
- From:
Chinese Journal of Physical Medicine and Rehabilitation
2015;37(12):904-907
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of theta-burst stimulation (TBS) of the motor cortex on the suprahyoid muscles and the mechanism through which the bilateral motor cortex regulates the suprahyoid muscles.Methods Continuous TBS (cTBS) was applied to the left motor cortex followed by intermittent TBS (iTBS) applied to the right motor cortex of 24 healthy subjects.The motor-evoked potentials (MEPs) of the suprahyoid muscles on both sides were recorded before the stimulation and after 15 and 30 minutes.The MEP amplitudes of the left and right suprahyoid muscles were analyzed using repeated measures analysis of variance.Results Before stimulation, the average MEP amplitudes of the left and right suprahyoid muscles were (375.29 ± 176.09) μV and (368.17 ± 149.02) μV respectively, significantly lower than the values after the stimulation.Conclusion iTBS can distinctly enhance the excitability of the right motor cortex controlling the suprahyoid muscles and reverse the inhibition caused by cTBS applied to the left motor cortex.Clarifying the effect of TBS on the excitability of the bilateral motor cortex is important for the rehabilitation of dysphagic stroke survivors.
