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首页> 美国卫生研究院文献>other >Behavioural Distinction between Strategic Control and Spatial Realignment during Visuomotor Adaptation in a Viewing Window Task
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Behavioural Distinction between Strategic Control and Spatial Realignment during Visuomotor Adaptation in a Viewing Window Task

机译：在观察窗任务视觉运动适应过程中的战略控制和空间整治行为之间的区别

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We must frequently adapt our movements in order to successfully perform motor tasks. These visuomotor adaptations can occur with or without our awareness and so, have generally been described by two mechanisms: strategic control and spatial realignment. Strategic control is a conscious modification used when discordance between an intended and actual movement is observed. Spatial realignment is an unconscious recalibration in response to subtle differences between an intended and efferent movement. Traditional methods of investigating visuomotor adaptation often involve simplistic, repetitive motor goals and so may be vulnerable to subject boredom or expectation. Our laboratory has recently developed a novel, engaging computer-based task, the Viewing Window, to investigate visuomotor adaptation to large, apparent distortions. Here, we contrast behavioural measures of visuomotor adaptation during the Viewing Window task when either gradual progressive rotations or large, sudden rotations are introduced in order to demonstrate that this paradigm can be utilized to investigate both strategic control and spatial realignment. The gradual rotation group demonstrated significantly faster mean velocities and spent significantly less time off the object compared to the sudden rotation group. These differences demonstrate adaptation to the distortion using spatial realignment. Scan paths revealed greater after-effects in the gradual rotation group reflected by greater time spent scanning areas off of the object. These results demonstrate the ability to investigate both strategic control and spatial realignment. Thus, the Viewing Window provides a powerful engaging tool for investigating the neural basis of visuomotor adaptation and impairment following injury and disease.
机译：为了成功执行运动任务，我们必须经常调整自己的动作。这些视觉运动的适应可能发生在有意识或无意识的情况下，因此通常用两种机制来描述：策略控制和空间重新排列。战略控制是在观察到预期动作与实际动作之间的不一致时使用的一种有意识的修改。空间调整是对预期运动与传出运动之间的细微差别做出的无意识重新校准。研究视觉运动适应性的传统方法通常涉及简单，重复的运动目标，因此可能容易受到受试者的无聊或期望。我们的实验室最近开发了一种新颖的，引人入胜的基于计算机的任务“查看窗口”，以研究视觉运动对大的，明显的变形的适应性。在这里，我们对比了在“观察窗口”任务期间引入渐进式旋转或大的突然旋转时视觉运动适应的行为量度，以证明该范例可用于研究策略控制和空间重新排列。与突然旋转组相比，渐进旋转组显示出明显更快的平均速度，并且从物体上花费的时间明显更少。这些差异表明使用空间重新对齐可以适应失真。扫描路径显示出在渐进旋转组中更大的后效应，这是由于花费更多的时间来扫描对象之外的区域所致。这些结果证明了研究战略控制和空间重组的能力。因此，“观察窗”为研究损伤和疾病后视觉运动适应和损伤的神经基础提供了强大的工具。

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