Phase correction in sensorimotor synchronization: Nonlinearities in voluntary and involuntary responses to perturbations
Phase correction in sensorimotor synchronization: Nonlinearities in voluntary and involuntary responses to perturbations
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DOI：
10.1016/s0167-9457(02)00076-3
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发表时间：
2002-04-01
影响因子：
2.1
通讯作者：
Repp, BH
中科院分区：
文献类型：
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作者：
Repp, BH
当手指敲击与听觉序列同步时，序列中的全局相移 (PS) 和局部事件起始偏移 (EOS) 都会在下一次敲击时引发相位校正响应 (PCR)。预期 PS 的 PCR 是有意的且较大，而预期 EOS 的 PCR 是无意的且较小。 PCR 幅度随着扰动幅度线性增加，最高可达序列周期（500 毫秒）的+/-15%。当扰动较大时，自愿 PCR 增加得更慢，而非自愿 PCR 则达到渐近线。这些结果是先前在分块设计中获得的 [J.过期。心理。人类感知。履行。 （正在出版）]，在随机设计和两个额外的任务环境中进行了复制，这些任务环境改变了参与者的意图，同时中和了他们的期望。设计和期望似乎都没有发挥作用。然而，也注意到了相当大的个体差异。结果证实，相位校正部分是自动的，部分受自愿控制，并且它们提供了误差校正函数的经验估计，这可能有助于感觉运动同步行为的形式建模。 (C) 2002 Elsevier Science B.V. 保留所有权利。
When finger taps are synchronized with an auditory sequence, both a global phase shift (PS) and a local event onset shift (EOS) in the sequence elicit a phase correction response (PCR) on the next tap. The PCR to an expected PS is intended and large, whereas that to an expected EOS is unintended and smaller. PCR magnitude increases linearly with perturbation magnitude up to about +/-15% of the sequence period (500 milliseconds). With larger perturbations, voluntary PCRs increase more slowly whereas involuntary PCRs reach an asymptote. These results, obtained previously in a blocked design [J. Exp. Psychol. Human Percept. Perform. (in press)], were replicated in a randomized design and in two additional task contexts that varied participants' intentions while neutralizing their expectations. Neither design nor expectations seemed to play a role. However, considerable individual differences were noted. The results confirm that phase correction is partially automatic and partially subject to voluntary control, and they provide empirical estimates of error correction functions that may be useful in formal modeling of sensorimotor synchronization behavior. (C) 2002 Elsevier Science B.V. All rights reserved.