Chen Yanqing, Repp Bruno H, Patel Aniruddh D
The Neurosciences Institute, 10640 John Jay Hopkins Drive, San Diego, CA 92121, USA.
Hum Mov Sci. 2002 Oct;21(4):515-32. doi: 10.1016/s0167-9457(02)00138-0.
Spectral analysis was applied to study the variability in human rhythmic synchronization to a visual, auditory or combined auditory-visual metronome of about 2 Hz, as well as the variability in continuation tapping at the same rate with or without visual or auditory feedback. In synchronization, variability was larger in the visual condition than in the auditory and combined conditions, but only below frequencies of about 0.3 Hz. Thus, there seem to be at least two sources of variability in synchronization, one being modality-independent and limited to intervals shorter than 3 s, and the other being modality-dependent and evident as slow "drift", especially in the visual task. In continuation tapping, variability did not depend reliably on the presence or modality of feedback. However, spectral analysis revealed a change in the temporal structure of variability around 0.08 Hz (a period of about 12 s or 24 taps), which roughly agrees with earlier findings reported in the literature.
应用频谱分析来研究人类与大约2赫兹的视觉、听觉或视听组合节拍器进行节奏同步时的变异性，以及在有或没有视觉或听觉反馈的情况下以相同速率持续敲击时的变异性。在同步过程中，视觉条件下的变异性比听觉和视听组合条件下更大，但仅在约0.3赫兹以下的频率范围内如此。因此，同步中似乎至少有两个变异性来源，一个与模态无关，且限于短于3秒的间隔，另一个与模态有关，并表现为缓慢的“漂移”，尤其是在视觉任务中。在持续敲击时，变异性并不可靠地取决于反馈的存在或模态。然而，频谱分析揭示了在约0.08赫兹（约12秒或24次敲击的周期）附近变异性的时间结构变化，这大致与文献中早期报道的结果一致。
