The embodied nature of motor imagery: the influence of posture and perspective
The embodied nature of motor imagery: the influence of posture and perspective
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DOI：
10.1007/s00221-008-1693-1
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发表时间：
2009-04-01
影响因子：
2
通讯作者：
Zentgraf, Karen
中科院分区：
文献类型：
--
作者：
Lorey, Britta;Bischoff, Matthias;Zentgraf, Karen
假设从第一人称视角（1PP）想象自己比第三人称视角（3PP）更具体现性。因此，1PP图像应导致更多的活动，在运动和运动相关的结构，和姿势配置自己的身体应该是特别相关的1PP模拟。本研究调查是否手位置的本体感觉信息是集成类似的手运动的1PP和3PP图像。在功能性磁共振成像（fMRI）扫描过程中，20名右撇子女大学生观看了不同手部运动的视频序列，右手处于兼容与不兼容的姿势，随后对运动进行了1PP或3PP成像。结果显示，与3PP试验相比，1PP试验左半球运动和运动相关结构，特别是下顶叶的激活更强。在左下顶叶（顶叶盖，SII）和颞叶的激活是更强的1PP试验与兼容与不兼容的姿势。因此，本体感受信息的实际身体姿势是更相关的1PP图像处理。结果支持体现1PP图像的性质，并表明在运动训练或康复可能的应用。
It is assumed that imagining oneself from a first-person perspective (1PP) is more embodied than a third-person perspective (3PP). Therefore, 1PP imagery should lead to more activity in motor and motor-related structures, and the postural configuration of one's own body should be particularly relevant in 1PP simulation. The present study investigated whether proprioceptive information on hand position is integrated similarly in 1PP and 3PP imagery of hand movements. During functional magnetic resonance imaging (fMRI) scanning, 20 right-handed female college students watched video sequences of different hand movements with their right hand in a compatible versus incompatible posture and subsequently performed 1PP or 3PP imagery of the movement. Results showed stronger activation in left hemisphere motor and motor-related structures, especially the inferior parietal lobe, on 1PP compared with 3PP trials. Activation in the left inferior parietal lobe (parietal operculum, SII) and the insula was stronger in 1PP trials with compatible compared with incompatible posture. Thus, proprioceptive information on actual body posture is more relevant for 1PP imagery processes. Results support the embodied nature of 1PP imagery and indicate possible applications in athletic training or rehabilitation.