Nakagawa Kei, Aokage Yoriyuki, Fukuri Takashi, Kawahara Yumi, Hashizume Akira, Kurisu Kaoru, Yuge Louis
Division of Bio-Environmental Adaptation Sciences, Graduate School of Health Sciences, Hiroshima University, Hiroshima, Japan.
Neuroreport. 2011 Mar 30;22(5):217-22. doi: 10.1097/WNR.0b013e328344b480.
We showed the differences in brain activities during motor imagery and motor execution when performing single skilled movements using magnetoencephalography. The tasks included finger tapping and chopstick usage with the dominant or nondominant hand. Chopstick usage with the nondominant hand was an unfamiliar task and required higher skill. Neuromagnetic data were processed by fast Fourier transformation, and β band event-related synchronization was evaluated. Beta oscillation changes were observed in the right and left sensorimotor cortices during both tasks; however, the ipsilateral changes were smaller during motor imagery than during motor execution. These results suggest that motor imagery of skilled movement tasks causes a smaller neuronal burden in the sensorimotor cortex.
我们使用脑磁图显示了在执行单个熟练动作时，运动想象和运动执行过程中大脑活动的差异。任务包括用优势手或非优势手进行手指敲击和使用筷子。用非优势手使用筷子是一项不熟悉的任务，需要更高的技巧。神经磁数据通过快速傅里叶变换进行处理，并评估β波段事件相关同步。在两项任务中，左右感觉运动皮层均观察到β振荡变化；然而，在运动想象过程中，同侧变化比运动执行过程中更小。这些结果表明，熟练运动任务的运动想象在感觉运动皮层中引起的神经元负担较小。
