Mirror Visual Feedback Induces M1 Excitability by Disengaging Functional Connections of Perceptuo-Motor-Attentional Processes during Asynchronous Bimanual Movement: A Magnetoencephalographic Study

被引：2

作者：

Lin, Szu-Hung ^{[1
]}

Cheng, Chia-Hsiung ^{[2
,3
,4
,5
]}

Wu, Ching-Yi ^{[2
,3
,6
]}

Liu, Chien-Ting ^{[7
,8
]}

Chen, Chia-Ling ^{[6
,9
]}

Hsieh, Yu-Wei ^{[2
,3
,6
]}

机构：

[1] Soochow Univ, Dept Psychol, Taipei 11102, Taiwan

[2] Chang Gung Univ, Coll Med, Grad Inst Behav Sci, Dept Occupat Therapy, Taoyuan 33302, Taiwan

[3] Chang Gung Univ, Hlth Aging Res Ctr, Taoyuan 33302, Taiwan

[4] Chang Gung Univ, Lab Brain Imaging & Neural Dynam BIND Lab, Taoyuan 33302, Taiwan

[5] Chang Gung Mem Hosp, Dept Psychiat, Taoyuan 33305, Taiwan

[6] Chang Gung Mem Hosp, Dept Phys Med & Rehabil, Taoyuan 33305, Taiwan

[7] Taipei Tzu Chi Hosp, Buddhist Tzu Chi Med Fdn, Dept Phys Med & Rehabil, New Taipei 231405, Taiwan

[8] Tzu Chi Univ, Sch Med, Hualien 97004, Taiwan

[9] Chang Gung Univ, Coll Med, Grad Inst Early Intervent, Taoyuan 33302, Taiwan

来源：

BRAIN SCIENCES | 2021年 / 11卷 / 08期

关键词：

mirror visual feedback (MVF); motor cortex; beta rebound oscillation; functional connectivity; magnetoencephalography (MEG); HAND MOVEMENTS; THERAPY; CORTEX; ACTIVATION; ALPHA; REHABILITATION; OSCILLATIONS; REFLECTION; CONFLICT; MEG;

D O I：

10.3390/brainsci11081092

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Mirror visual feedback (MVF) has been shown to increase the excitability of the primary motor cortex (M1) during asynchronous bimanual movement. However, the functional networks underlying this process remain unclear. We recruited 16 healthy volunteers to perform asynchronous bimanual movement, that is, their left hand performed partial range of movement while their right hand performed normal full range of movement. Their ongoing brain activities were recorded by whole-head magnetoencephalography during the movement. Participants were required to keep both hands stationary in the control condition. In the other two conditions, participants were required to perform asynchronous bimanual movement with MVF (Asy_M) and without MVF (Asy_w/oM). Greater M1 excitability was found under Asy_M than under Asy_w/oM. More importantly, when receiving MVF, the visual cortex reduced its functional connection to brain regions associated with perceptuo-motor-attentional process (i.e., Ml, superior temporal gyrus, and dorsolateral prefrontal cortex). This is the first study to demonstrate a global functional network of MVF during asynchronous bimanual movement, providing a foundation for future research to examine the neural mechanisms of mirror illusion in motor control.

引用

页数：11

共 43 条

[41] Conflict caused by visual feedback modulates activation in somatosensory areas during movement execution [J].