A nearby distractor does not influence hand movements
A nearby distractor does not influence hand movements
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DOI：
10.1016/j.cortex.2021.04.021
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发表时间：
2021-07-14
期刊：
影响因子：
3.6
通讯作者：
Smeets，Jeroen B. J.
中科院分区：
文献类型：
--
作者：
Arkesteijn，Kiki;Donk，Mieke;Smeets，Jeroen B. J.
在与环境互动时，我们的手动动作通常会先有眼球运动。这表明手和眼运动中的目标选择过程可能是耦合的。众所周知，当干扰物靠近目标时，眼球运动的终点将偏向干扰物。当有更多的观看时间时，这种所谓的全局效果的大小会减小。在这里，我们调查是否有类似的效果也存在于手部运动。如果手和眼运动的目标选择过程确实是耦合的，那么手的运动也应该存在类似的偏差。为了验证这一点，我们采用了经典的全局效应范式，但将其应用于目标导向的手部运动。我们发现，除了一个参与者，所有的手运动的端点是公正的，无论观看时间。这些结果表明，手运动的目标选择的过程独立于眼运动的过程。
When interacting with the environment, our manual actions are often preceded by an eye movement. This suggests that the processes underlying target selection in hand and eye movements may be coupled. It is known that when a distractor is presented close to a target, the endpoint of an eye movement will be biased towards the distractor. The size of this so-called global effect decreases when more viewing time is available. Here we investigate whether a similar effect is also present in hand movements. If the processes underlying target selection for hand and eye movements are indeed coupled, a similar bias should be present in hand movements as well. To test this, we adopted a classic global effect paradigm but applied it to goal-directed hand movements. We show that the endpoints of hand movements are unbiased for all but one participant, irrespective of the viewing time. These results suggest that the processes underlying target selection for hand movements operate independently from those for eye movements.