External stimulation, such as transcranial magnetic stimulation (TMS), is considered a technique to improve motor cortical excitability during motor imagery (MI). However, few studies have examined the effects of TMS on motor intention during MI and the effects of TMS combined with MI on cortical plasticity. For this, we randomly enrolled 18 healthy young people, divided them into two groups (nine people in each group), and conducted two types of experiments: an MI experiment (MI group) and a TMS during the MI experiment (MI + TMS group). We also calculated the $\mu $ -event-related desynchronization ( $\mu $ -ERD), MI accuracy, and functional connectivity, and compared changes in these measures before and after the training. The results showed that compared with the MI group, the $\mu $ -ERD, MI recognition rate, and the local-scale functional connectivity of both hemispheres in the MI + TMS group were significantly improved. However, further analysis of the power spectrum density of the EEG signals showed that some subjects in both groups had obvious mental fatigue, which compromised the effect of TMS in MI. We conclude that TMS during MI can improve cortical cortex plasticity, increase motor intention, and improve the MI decoding rate. This research lays the foundation for applying MI combined with TMS in rehabilitation training and BCI system.
基金:
This work was supported in partby the National Natural Science Foundation of China under Grant62371416 and Grant 62103354; in part by the Science and TechnologyProgram of Hebei under Grant 21372005D and Grant 21372001D; inpart by the Natural Science Foundation of Hebei Province under GrantF2022203002 and Grant F2022203079; and in part by Hebei InnovationCapability Improvement Plan Project under Grant 22567619H.
Chen Xiaoling,Li Tianqing,Liu Dongmei,et al.Using Transcranial Magnetic Stimulation to Improve Motor Cortical Excitability During Motor Imagery[J].IEEE SENSORS JOURNAL.2024,24(10):16943-16952.doi:10.1109/JSEN.2024.3382884.
APA:
Chen, Xiaoling,Li, Tianqing,Liu, Dongmei,Cheng, Shengcui,Zhang, Dong...&Xie, Ping.(2024).Using Transcranial Magnetic Stimulation to Improve Motor Cortical Excitability During Motor Imagery.IEEE SENSORS JOURNAL,24,(10)
MLA:
Chen, Xiaoling,et al."Using Transcranial Magnetic Stimulation to Improve Motor Cortical Excitability During Motor Imagery".IEEE SENSORS JOURNAL 24..10(2024):16943-16952