Joint coordination during bimanual transport of real and imaginary objects.
Joint coordination during bimanual transport of real and imaginary objects.
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DOI：
10.1016/j.neulet.2009.03.084
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发表时间：
2009-06-05
影响因子：
2.5
通讯作者：
Latash ML
中科院分区：
文献类型：
--
作者：
Gorniak SL;Feldman AG;Latash ML
研究了双臂搬运真实的物体和假想物体时的多关节协调问题。在三分之一的试验中，其中一只手臂意外被捕。在没有扰动的情况下，多关节协同作用在运动的早期和晚期稳定臂之间的距离，在两种条件下都可以看到，甚至在假想物体条件下更强。然而，只有在真实的物体条件下才能看到非扰动臂的快速调整，而在假想物体条件下，非扰动臂对扰动没有反应。我们的结论是触觉信息是重要的中枢神经系统迅速作出反应的扰动双手的任务。这些结果强调了在没有外部扰动的情况下稳定性之间的潜在差异，外部扰动可以通过在双手之间设置参考孔径来确保，而稳定性需要在此参考孔径中进行调整。
We studied multi-joint coordination during tasks of transporting real and imaginary objects with two arms. One of the arms was unexpectedly arrested in one third of trials performed. In the absence of perturbation, multi-joint synergies stabilizing the distance between the arms early and late in the movement were seen in both conditions and even were stronger in the imaginary object condition. However, quick adjustments in the non-perturbed arm were seen only in the real object condition, whereas the non-perturbed arm did not react to the perturbation in the imaginary object condition. We conclude that tactile information is important for the central nervous system to quickly respond to perturbations in bimanual tasks. The results underscore potential differences between stability in the absence of external perturbations that may be ensured by setting a reference aperture between the hands and stability that requires adjustments in this reference aperture following a major perturbation.
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