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首页> 外文期刊>Experimental Brain Research >Concurrent adaptation to opposing visual displacements during an alternating movement
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Concurrent adaptation to opposing visual displacements during an alternating movement

机译：在交替运动中同时适应相反的视觉位移

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It has been suggested that, during tasks in which subjects are exposed to a visual rotation of cursor feedback, alternating bimanual adaptation to opposing rotations is as rapid as unimanual adaptation to a single rotation (Bock et al. in Exp Brain Res 162:513–519, 2005). However, that experiment did not test strict alternation of the limbs but short alternate blocks of trials. We have therefore tested adaptation under alternate left/right hand movement with opposing rotations. It was clear that the left and right hand, within the alternating conditions, learnt to adapt to the opposing displacements at a similar rate suggesting that two adaptive states were formed concurrently. We suggest that the separate limbs are used as contextual cues to switch between the relevant adaptive states. However, we found that during online correction the alternating conditions had a significantly slower rate of adaptation in comparison to the unimanual conditions. Control conditions indicate that the results are not directly due the alternation between limbs or to the constant switching of vision between the two eyes. The negative interference may originate from the requirement to dissociate the visual information of these two alternating displacements to allow online control of the two arms.
机译：有人建议，在使对象暴露于光标反馈的视觉旋转的任务期间，双向交替适应相反的旋转就像单手适应单个旋转一样快（Bock等人，在Exp Brain Res 162：513– 519，2005）。但是，该实验并未测试四肢的严格交替，而是短暂的交替试验。因此，我们已经测试了在左手/右手交替交替旋转的情况下的适应性。显然，在交替条件下，左手和右手学会了以相似的速率适应相反的位移，这表明两个适应状态同时形成。我们建议将单独的肢体用作上下文提示，以在相关的适应状态之间进行切换。但是，我们发现，在在线校正过程中，与单人条件相比，交替条件的适应速度要慢得多。对照条件表明，结果并非直接由于四肢交替或两只眼睛之间不断切换视力所致。消极干扰可能源于要求分离这两个交替位移的视觉信息以允许在线控制两个臂的要求。

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