Shen Li, Cheng Xiaorong, Ma Zhangjing, Zhong Hexing, Jiao Xiaofei, Wang Ying, Jiang Yi, Fan Zhao, Ding Xianfeng
School of Psychology, Central China Normal University, Wuhan, 430079, China.
Key Laboratory of Adolescent Cyberpsychology and Behavior (CCNU), Ministry of Education, Wuhan, 430079, China.
Psychon Bull Rev. 2025 May 6. doi: 10.3758/s13423-025-02689-3.
The processing of biological motion (BM), particularly the local motion cues tracing the movements of crucial joints, is vital for social interaction and human survival. While numerous studies have focused on the brain mechanisms underlying BM processing, the contribution of sensorimotor simulation at peripheral effectors remains unclear. In this study, we examined healthy adults and paraplegic spinal cord injury participants to investigate this issue. For healthy adults, both intact BM stimuli and local BM cues without global configuration induced a temporal dilation effect when sitting (sensorimotor simulation accessible), but not when standing (sensorimotor simulation temporarily hindered). In contrast, for participants with permanently hindered sensorimotor simulation, the temporal dilation effect was observed only with intact BM stimuli but not with local BM cues, indicating a robust reliance on sensorimotor simulation during the processing of local BM cues and a selective compensation based on global configuration cues for the permanent loss of sensorimotor simulation. These findings highlight the role of embodied cognition in the distributed processing of biological motion and suggest the importance of selective compensation under damaged sensorimotor circuits.
生物运动（BM）的处理，尤其是追踪关键关节运动的局部运动线索，对于社交互动和人类生存至关重要。虽然众多研究聚焦于BM处理背后的大脑机制，但外周效应器处的感觉运动模拟的作用仍不明确。在本研究中，我们对健康成年人及截瘫脊髓损伤参与者进行了检测，以探究这一问题。对于健康成年人，完整的BM刺激和无全局构型的局部BM线索在坐着时（感觉运动模拟可行）均会引发时间膨胀效应，但站立时（感觉运动模拟暂时受阻）则不会。相反，对于感觉运动模拟永久受阻的参与者，仅在完整BM刺激下观察到时间膨胀效应，而局部BM线索则未引发该效应，这表明在处理局部BM线索时强烈依赖感觉运动模拟，且基于全局构型线索对感觉运动模拟的永久丧失进行了选择性补偿。这些发现突出了具身认知在生物运动分布式处理中的作用，并表明了受损感觉运动回路下选择性补偿的重要性。
