Sensory conflict impacts postural control, yet its effect on cortico-muscular interaction remains underexplored. We aimed to investigate sensory conflict’s influence on the cortico-muscular network and postural stability. We used a rotating platform and virtual reality to present subjects with congruent and incongruent sensory input, recorded EEG (electroencephalogram) and EMG (electromyogram) data, and constructed a directed connectivity network. The results suggest that, compared to sensory congruence, during sensory conflict: (1) connectivity among the sensorimotor, visual, and posterior parietal cortex generally decreases, (2) cortical control over the muscles is weakened, (3) feedback from muscles to the cortex is strengthened, and (4) the range of body sway increases and its complexity decreases. These results underline the intricate effects of sensory conflict on cortico-muscular networks. During the sensory conflict, the brain adaptively decreases the integration of conflicting information. Without this integrated information, cortical control over muscles may be lessened, whereas the muscle feedback may be enhanced in compensation.

感觉冲突会影响姿势控制，但其对皮质肌肉相互作用的影响仍未得到充分研究。我们的目的是研究感觉冲突对皮质肌肉网络和姿势稳定性的影响。我们使用旋转平台和虚拟现实向受试者呈现一致和不一致的感觉输入，记录 EEG（脑电图）和 EMG（肌电图）数据，并构建定向连接网络。结果表明，与感觉一致性相比，在感觉冲突期间：（1）感觉运动、视觉和后顶叶皮层之间的连通性普遍下降，（2）皮层对肌肉的控制减弱，（3）从肌肉到大脑的反馈皮层得到强化，(4)身体摇摆范围增大，复杂性降低。这些结果强调了感觉冲突对皮质肌肉网络的复杂影响。在感觉冲突期间，大脑会适应性地减少冲突信息的整合。如果没有这种综合信息，皮层对肌肉的控制可能会减弱，而肌肉反馈的补偿可能会增强。