Zhou Lu, Wu Biao, Qin Bing, Gao Fan, Li Weitao, Hu Haixu, Zhu Qiaoqiao, Qian Zhiyu
Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, 29 Jiangjun Avenue, Jiangning District, Nanjing, 211100 Jiangsu China.
Electronic Information Department, Nanjing University of Aeronautics and Astronautics, Nanjing, China.
Cogn Neurodyn. 2024 Jun;18(3):1079-1096. doi: 10.1007/s11571-023-09970-y. Epub 2023 Apr 24.
Studies show that movement observation (MO), movement imagery (MI), or movement execution (ME) based brain-computer interface systems are promising in promoting the rehabilitation and reorganization of damaged motor function. This study was aimed to explore and compare the motor function rehabilitation mechanism among MO, MI, and ME. 64-channel electroencephalogram and 4-channel electromyogram data were collected from 39 healthy participants (25 males, 14 females; 18-23 years old) during MO, ME, and MI. We analyzed and compared the inter-cortical, inter-muscular, cortico-muscular, and spatial coherence under MO, ME, and MI. Under MO, ME, and MI, cortico-muscular coherence was strongest at the beta-lh band, which means the beta frequency band for cortical signals and the lh frequency band for muscular signals. 56.25-96.88% of the coherence coefficients were significantly larger than 0.5 ( < 0.05) at the beta-lh band. MO and ME had a contralateral advantage in the spatial coherence between cortex and muscle, while MI had an ipsilateral advantage in the spatial coherence between cortex and muscle. Our results show that the cortico-muscular beta-lh band plays a critical role in the synchronous coupling between cortex and muscle. Also, our findings suggest that the primary motor cortex (M1), dorsolateral prefrontal cortex (DLPFC), supplementary motor area (SMA), and premotor cortex (PMC) are the specific regions of MO, ME, and MI. However, their pathways of regulating muscles are different under MO, ME, and MI. This study is important for better understanding the motor function rehabilitation mechanism in MO, MI, and ME.
研究表明，基于运动观察（MO）、运动想象（MI）或运动执行（ME）的脑机接口系统在促进受损运动功能的康复和重组方面很有前景。本研究旨在探索和比较MO、MI和ME之间的运动功能康复机制。在MO、ME和MI过程中，从39名健康参与者（25名男性，14名女性；年龄18 - 23岁）收集了64通道脑电图和4通道肌电图数据。我们分析并比较了MO、ME和MI下的皮质间、肌肉间、皮质 - 肌肉以及空间相干性。在MO、ME和MI下，皮质 - 肌肉相干性在β - lh频段最强，即皮质信号的β频段和肌肉信号的lh频段。在β - lh频段，56.25 - 96.88%的相干系数显著大于0.5（<0.05）。MO和ME在皮质与肌肉之间的空间相干性上具有对侧优势，而MI在皮质与肌肉之间的空间相干性上具有同侧优势。我们的结果表明，皮质 - 肌肉β - lh频段在皮质与肌肉之间的同步耦合中起关键作用。此外，我们的研究结果表明，初级运动皮层（M1）、背外侧前额叶皮层（DLPFC）、辅助运动区（SMA）和运动前皮层（PMC）是MO、ME和MI的特定区域。然而，它们在MO、ME和MI下调节肌肉的途径不同。本研究对于更好地理解MO、MI和ME中的运动功能康复机制具有重要意义。
