Objective:To explore the evidence of mirror induction intensify motor imagery of swallowing（MIS） activating swallowing related brain regions.Method:Seven healthy right-handed young adults were enrolled,and motor imagery of swallowing was induced by swallowing videos of young men and women.The trials of motor imagery of swallowing under mirrorinduced condition were the experimental group,and the trials of motor imagery of swallowing without induction were the control group.Magnetoencephalography（MEG） was used to detect event-related synchronization/desynchronization（ERS/ERD） of motor imagery of swallowing tasks in the whole brain under different conditions.Result:During the 0-to 10-seconds time windows of the tasks,both the control group and the experimental group showed a wide range of ERS activation pattern at the whole brain level.In the α and β bands,some brain regions associated with swallowing showed significant ERS pattern in the experimental group than in the control group.The brain regions of significant activation was mainly gathered in bilateral frontal and temporal lobes,a small amount of them appeared in bilateral occipital and limbic lobe,right parietal lobe and left insula lobe.Conclusion:Compared with non-induced motor imagery of swallowing training,mirror-induced motor imagery of swallowing significantly activates swallowing-related functional brain regions,suggesting that mirror induction may have a priming effect on motor imagery of swallowing and improve the quality and effect of training.Our study provides the basis for the application and improvement of motor imagery of swallowing in clinical treatment.
目的 比较两种主动直腿抬高(ASLR)动作的募集程度,并探讨相关肌群的募集模式.方法 2018年6月至10月,选取11例健康受试者,记录动作A(连贯动作)和动作B(滞空10 s)单侧股直肌以及双侧腹直肌、腹外斜肌、腹内斜肌的表面肌电(sEMG)信号,并分析这些肌肉最大自主等长收缩(MVIC)时的募集程度(％MVIC).结果 在动作A中,同侧腹内斜肌和腹外斜肌募集程度大于对侧(t>2.549,P<0.05);在动作B中,同侧的腹内斜肌、腹外斜肌和腹直肌募集程度大于对侧(t>2.240,P<0.05);动作A时,双侧腹内斜肌和股直肌募集率更多(t>3.549,P<0.05).结论 两种ASLR动作都表现为同侧优势激活模式;在不同ASLR动作中,神经肌肉系统采取不同的运动控制策略.
目的 探讨主动直腿抬高(ASLR)动作相关核心肌群的募集模式.方法 12例健康在校大学生进行ASLR动作时,用表面肌电分析系统采集同侧股直肌以及双侧腹直肌、腹外斜肌、腹内斜肌、多裂肌的肌电信号,分析这些肌肉的最大自主等长收缩募集率(％MVIC).结果 在ASLR动作中,双侧腹直肌、多裂肌％MVIC比较无统计学差异(P>0.05),同侧腹内斜肌和腹外斜肌的％MVIC大于对侧[(4.50±2.24)％vs.(3.41±1.81)％ 和(3.98±2.64)％vs.(2.55±1.52)％](P<0.05).结论 正常人做ASLR动作时,同侧腹内斜肌和腹外斜肌表现为同侧优势模式,帮助建立骨盆稳定性,保证ASLR动作质量.
