Evidence for Multisensory Spatial-to-Motor Transformations in Aiming Movements of Children
Evidence for Multisensory Spatial-to-Motor Transformations in Aiming Movements of Children
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DOI：
10.1152/jn.90781.2008
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发表时间：
2009-01-01
影响因子：
2.5
通讯作者：
Clark, Jane E.
中科院分区：
文献类型：
--
作者：
King, Bradley R.;Kagerer, Florian A.;Clark, Jane E.
王志强，王志强，孔特拉斯-维达尔JL，克拉克JE。儿童瞄准运动中多感觉空间到运动转换的证据。中国生物医学工程学报（英文版），2009。首次发表于2008年11月5日；doi: 10.1152 / jn.90781.2008。现有的研究瞄准运动执行中与年龄相关的差异的发展文献主要集中在视觉运动协调上，尽管事实上，其他感觉模式，如听觉和体感，可能有助于运动计划、执行和学习。目前的研究调查了针对视觉和听觉刺激的瞄准运动的执行。此外，我们检查了5- 10岁的参与者在视觉运动旋转之前和之后在视觉和听觉刺激下进行瞄准运动时，视觉运动和听觉运动协调之间的相互作用。所有年龄组的儿童在视觉运动扰动下表现出显著的改善，如初始方向误差和均方根误差的减少所示。此外，所有年龄组的儿童在暴露后阶段都表现出明显的视觉后遗症，这表明他们的空间到运动转换的成功更新。有趣的是，这些更新的空间到运动的转换也影响了听觉运动的表现，正如在听觉暴露后阶段扭曲的运动轨迹所表明的那样。在听觉暴露后，即使听觉-运动关系没有被操纵，扭曲的轨迹仍然存在。结果表明，到5岁时，儿童已经发展出一种多感官空间到运动的转换，用于执行瞄准视觉和听觉目标的运动。
King BR, Kagerer FA, Contreras-Vidal JL, Clark JE. Evidence for multisensory spatial-to-motor transformations in aiming movements of children. J Neurophysiol 101: 315-322, 2009. First published November 5, 2008; doi:10.1152/jn.90781.2008. The extant developmental literature investigating age-related differences in the execution of aiming movements has predominantly focused on visuomotor coordination, despite the fact that additional sensory modalities, such as audition and somatosensation, may contribute to motor planning, execution, and learning. The current study investigated the execution of aiming movements toward both visual and acoustic stimuli. In addition, we examined the interaction between visuomotor and auditory-motor coordination as 5- to 10-yr-old participants executed aiming movements to visual and acoustic stimuli before and after exposure to a visuomotor rotation. Children in all age groups demonstrated significant improvement in performance under the visuomotor perturbation, as indicated by decreased initial directional and root mean squared errors. Moreover, children in all age groups demonstrated significant visual aftereffects during the postexposure phase, suggesting a successful update of their spatial-to-motor transformations. Interestingly, these updated spatial-to-motor transformations also influenced auditory-motor performance, as indicated by distorted movement trajectories during the auditory postexposure phase. The distorted trajectories were present during auditory postexposure even though the auditory-motor relationship was not manipulated. Results suggest that by the age of 5 yr, children have developed a multisensory spatial-to-motor transformation for the execution of aiming movements toward both visual and acoustic targets.