Tapping with peripheral nerve block - A role for tactile feedback in the timing of movements
Tapping with peripheral nerve block - A role for tactile feedback in the timing of movements
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DOI：
10.1007/s002210000562
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发表时间：
2001-02-01
影响因子：
2
通讯作者：
Prinz, W
中科院分区：
文献类型：
--
作者：
Aschersleben, G;Gehrke, J;Prinz, W
本研究探讨了周围神经阻滞的影响，即消除触觉反馈对同步性能。在敲击实验中，受试者被指示与听觉起搏信号同步敲击，在有和没有周围神经阻滞的条件下研究了三种不同的任务：触觉接触的标准敲击，等距敲击和无接触敲击。此外，最大叩击率记录有和没有周围神经阻滞。结果发现，在标准叩击和等长叩击任务中，外周神经阻滞会影响同步任务中常见的预期错误。在这两项任务中，局部麻醉导致起搏信号和敲击之间的延迟增加。在触觉信息被认为起次要作用的任务（最大敲击率和无接触敲击）中，性能仍然没有受到影响。结果清楚地表明了触觉反馈对动作时机的重要性。本文研究并讨论了一个模型的预测，该模型假设在同步任务中感觉反馈的量和负反馈的大小之间存在很强的相关性。
This study examines the impact of peripheral nerve block, that is, the elimination of tactile feedback on synchronization performance. In a tapping experiment in which subjects were instructed to tap in synchrony with an auditory pacing signal, three different tasks were studied under conditions with and without peripheral nerve block: standard tapping with tactile contact, isometric tapping, and contact-free tapping. In addition, the maximum tapping rate was registered both with and without peripheral nerve block. It was found that the anticipatory error, usually observed in synchronization tasks, was affected by the peripheral nerve block in the standard tapping and the isometric tapping task. In both tasks, local anesthesia led to an increase in asynchrony between the pacing signal and the tap. Performance remained unimpaired in those tasks in which tactile information was assumed to play a minor role (maximum tapping rate and contact-free tapping). The results clearly demonstrate the importance of tactile feedback for the timing of movements. The predictions of a model assuming a strong correlation between the amount of sensory feedback and the size of the negative asynchrony in synchronization tasks were examined and discussed.