Tactile feedback and timing accuracy in piano performance
Tactile feedback and timing accuracy in piano performance
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DOI：
10.1007/s00221-007-1252-1
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发表时间：
2008-04-01
影响因子：
2
通讯作者：
Palmer, Caroline
中科院分区：
文献类型：
--
作者：
Goebl, Werner;Palmer, Caroline
诸如弹钢琴或与外部信号同步敲击等连续动作对制作人提出了很高的认知和运动要求，包括以各种各样的速率生成精确的时间。来自指尖的触觉信息已被证明有助于控制手指敲击任务的时间。我们提出了一个假设，即时间误差的减少与钢琴家在演奏过程中手指运动的触觉传入信息有关。十二名钢琴家以四种速度演奏乐曲，采用同步-延续模式。用动作捕捉系统记录下的钢琴家手指对琴键的运动轨迹，在不同的演奏速率下包含了不同类型和数量的运动标志。当手指与按键表面初次接触并突然改变其加速度时，就会出现手指键（FK）标志。总体而言，随着演奏率的提高，钢琴演奏者的按键中出现了更多的FK标志。这些钢琴演奏者被分成两组：一组是弹奏率中等且弹奏率较低的演奏者，另一组是弹奏率持续较高的演奏者。低fk钢琴家在当前击键的触觉反馈增加和即将击键的时间准确性增加之间表现出正相关关系。这些发现表明，在钢琴演奏中，手指与琴键接触的感官信息提高了手指运动的时间准确性。
Sequential actions such as playing a piano or tapping in synchrony to an external signal put high cognitive and motor demands on producers, including the generation of precise timing at a wide variety of rates. Tactile information from the fingertips has been shown to contribute to the control of timing in finger tapping tasks. We addressed the hypothesis that reduction of timing errors is related to tactile afferent information in pianists' finger movements during performance. Twelve pianists performed melodies at four rates in a synchronization-continuation paradigm. The pianists' finger motion trajectories toward the piano keys, recorded with a motion capture system, contained different types and amounts of kinematic landmarks at different performance rates. One landmark, a finger-key (FK) landmark, can occur when the finger makes initial contact with the key surface and changes its acceleration abruptly. Overall, there were more FK landmarks in the pianists' keystrokes, as the performance rate increased. The pianists were divided into two groups: those with low percentages of FK in the medium rates that increased with increasing performance rate and those with persistently high FK percentages. Low-FK pianists showed a positive relationship between increased tactile feedback from the current keystroke and increased temporal accuracy in the upcoming keystroke. These findings suggest that sensory information available at finger-key contact enhances the timing accuracy of finger movements in piano performance.