Reach endpoint errors do not vary with movement path of the proprioceptive target
Reach endpoint errors do not vary with movement path of the proprioceptive target
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DOI：
10.1152/jn.00901.2011
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发表时间：
2012-06-01
影响因子：
2.5
通讯作者：
Henriques, Denise Y. P.
中科院分区：
文献类型：
--
作者：
Jones, Stephanie A. H.;Byrne, Patrick A.;Henriques, Denise Y. P.
琼斯 SA、伯恩 PA、菲勒 K、恩里克斯 DY。到达终点误差不随本体感觉目标的移动路径而变化。 J Neurophysiol 107: 3316-3324, 2012。首次发表于 2012 年 3 月 7 日； doi:10.1152/jn.00901.2011.-先前的研究表明，到达终点随着伸手的起始位置和到达目标在空间中的位置而变化。我们检查了本体感觉目标手的运动方向，在触及之前，对该目标的触及端点的影响。参与者用右手到达视觉、本体感觉（左目标手）或视觉本体感觉目标（左目标手在到达开始前照亮 1 秒）。 6个站点作为起始和最终目标位置（总共35个目标移动方向）。到达端点不随本体感觉目标的移动方向而变化，而是似乎锚定到一些其他参考（例如身体）。我们还比较了单模态和双模态条件下的到达终点。总体而言，视觉本体感受目标的触及模式与本体感受目标的触及模式相似，而触及精度与视觉目标的触及精度相似。然而，我们没有找到在这些任务中基于最大似然估计器整合视觉和本体感觉的证据。
Jones SA, Byrne PA, Fiehler K, Henriques DY. Reach endpoint errors do not vary with movement path of the proprioceptive target. J Neurophysiol 107: 3316-3324, 2012. First published March 7, 2012; doi:10.1152/jn.00901.2011.-Previous research has shown that reach endpoints vary with the starting position of the reaching hand and the location of the reach target in space. We examined the effect of movement direction of a proprioceptive target-hand, immediately preceding a reach, on reach endpoints to that target. Participants reached to visual, proprioceptive (left target-hand), or visual-proprioceptive targets (left target-hand illuminated for 1 s prior to reach onset) with their right hand. Six sites served as starting and final target locations (35 target movement directions in total). Reach endpoints do not vary with the movement direction of the proprioceptive target, but instead appear to be anchored to some other reference (e. g., body). We also compared reach endpoints across the single and dual modality conditions. Overall, the pattern of reaches for visual-proprioceptive targets resembled those for proprioceptive targets, while reach precision resembled those for the visual targets. We did not, however, find evidence for integration of vision and proprioception based on a maximum-likelihood estimator in these tasks.