Virtual Hand Feedback Reduces Reaction Time in an Interactive Finger Reaching Task.
Virtual Hand Feedback Reduces Reaction Time in an Interactive Finger Reaching Task.
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DOI：
10.1371/journal.pone.0154807
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发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Eng K
中科院分区：
文献类型：
--
作者：
Brand J;Piccirelli M;Hepp-Reymond MC;Morari M;Michels L;Eng K
通过视觉引导的手或手指动作进行计算机交互是日常工作或游戏中普遍使用的计算机部分。然而，令人惊讶的是，对于使用虚拟肢体表征与更简单的游标的性能影响知之甚少。在这项研究中，26名健康的右撇子成年人戴着数据手套，对屏幕上的目标进行食指屈伸运动。他们收到了四种不同类型的实时视觉反馈：一个简单的圆形光标，一个指示手指关节位置的点光模式，一个卡通手和一个完全阴影的虚拟手。我们发现，当参与者收到手的形式的反馈时，比收到圆形光标或点光反馈时，他们启动动作的速度更快。这一总体差异在四分之三的手与圆两两比较中是稳健的。手反馈的运动启动速度越快，运动幅度越大，运动误差越大。我们认为观察到的效应可能与动作感知和执行过程中手信息的启动有关，影响运动计划和执行。研究结果可能在虚拟现实应用中使用身体表征方面具有应用价值。
Computer interaction via visually guided hand or finger movements is a ubiquitous part of daily computer usage in work or gaming. Surprisingly, however, little is known about the performance effects of using virtual limb representations versus simpler cursors. In this study 26 healthy right-handed adults performed cued index finger flexion-extension movements towards an on-screen target while wearing a data glove. They received each of four different types of real-time visual feedback: a simple circular cursor, a point light pattern indicating finger joint positions, a cartoon hand and a fully shaded virtual hand. We found that participants initiated the movements faster when receiving feedback in the form of a hand than when receiving circular cursor or point light feedback. This overall difference was robust for three out of four hand versus circle pairwise comparisons. The faster movement initiation for hand feedback was accompanied by a larger movement amplitude and a larger movement error. We suggest that the observed effect may be related to priming of hand information during action perception and execution affecting motor planning and execution. The results may have applications in the use of body representations in virtual reality applications.