Infants' grip strength predicts mu rhythm attenuation during observation of lifting actions with weighted blocks.
Infants' grip strength predicts mu rhythm attenuation during observation of lifting actions with weighted blocks.
复制标题
在观察用配重块举起动作时，婴儿的握力可以预测 mu 节奏的衰减。
DOI：
10.1111/desc.12308
复制
发表时间：
2016
影响因子：
3.7
通讯作者：
Sommerville,JessicaA
中科院分区：
文献类型：
--
作者：
Upshaw,MichaelaB;Bernier,RaphaelA;Sommerville,JessicaA
研究已经证实，身体从根本上参与了感知：身体经验影响着共同神经系统的激活，这是动作观察过程中潜在的动作感知和产生，而身体特征影响着对空间环境的感知。然而，身体特征是否影响动作知觉及其潜在的神经系统尚不清楚，特别是在个体发育的早期。我们测量了12个月大婴儿的握力，并在观察不同重量块的举起动作时，研究了与Mu节律衰减的关系，Mu节律衰减是一种与动作知觉神经系统相关的脑电图。我们发现，在观察举起动作时，握力较高的婴儿表现出显著的MU衰减，而握力较低的婴儿则没有。此外，随着块重量的增加，观察托举过程中握力和Mu衰减之间的关系逐渐增强。我们认为，这种关系归因于婴儿对不同重量的举起物体所做努力的识别能力的差异，这是由于他们发育的力量所致。总而言之，我们的结果通过证明身体特征通过塑造其潜在神经系统的激活来影响行动感知，从而扩展了身体在感知中的作用。
Research has established that the body is fundamentally involved in perception: bodily experience influences activation of the shared neural system underlying action perception and production during action observation, and bodily characteristics influence perception of the spatial environment. However, whether bodily characteristics influence action perception and its underlying neural system is unknown, particularly in early ontogeny. We measured grip strength in 12‐month‐old infants and investigated relations with mu rhythm attenuation, an electroencephalographic correlate of the neural system underlying action perception, during observation of lifting actions performed with differently weighted blocks. We found that infants with higher grip strength exhibited significant mu attenuation during observation of lifting actions, whereas infants with lower grip strength did not. Moreover, a progressively strong relation between grip strength and mu attenuation during observation of lifts was found with increased block weight. We propose that this relation is attributable to differences in infants’ ability to recognize the effort associated with lifting objects of different weights, as a consequence of their developing strength. Together, our results extend the body's role in perception by demonstrating that bodily characteristics influence action perception by shaping the activation of its underlying neural system.