Repp Bruno H
Haskins Laboratories, 300 Crown Street, New Haven, CT 06511-6624, USA.
Psychol Res. 2008 Jan;72(1):79-98. doi: 10.1007/s00426-006-0067-1. Epub 2006 May 25.
A local phase perturbation in an auditory sequence during synchronized finger tapping elicits an automatic phase correction response (PCR). The stimulus for the PCR is usually considered to be the most recent tap-tone asynchrony. In this study, participants tapped on target tones ("beats") of isochronous tone sequences consisting of beats and subdivisions (1:n tapping). A phase perturbation was introduced either on a beat or on a subdivision. Both types of perturbation elicited a PCR, even though there was no asynchrony associated with a subdivision. Moreover, the PCR to a perturbed beat was smaller when an unperturbed subdivision followed than when there was no subdivision. The relative size of the PCRs to perturbed beats and subdivisions depended on tempo, on whether the subdivision was local or present throughout the sequence, and on whether or not participants engaged in mental subdivision, but not on whether or not taps were made on the subdivision level. The results show that phase correction in synchronization depends not merely on asynchronies but on perceptual monitoring of multiple temporal references within a metrical hierarchy.
在同步手指敲击过程中，听觉序列中的局部相位扰动会引发自动相位校正反应（PCR）。PCR的刺激通常被认为是最近的敲击-音调异步。在本研究中，参与者敲击由节拍和细分组成的等时音调序列的目标音调（“节拍”）（1:n敲击）。在节拍或细分上引入相位扰动。即使细分没有相关异步，两种类型的扰动都会引发PCR。此外，当随后有未受扰动的细分时，对受扰动节拍的PCR比对没有细分时要小。对受扰动节拍和细分的PCR的相对大小取决于节奏、细分是局部的还是贯穿整个序列存在，以及参与者是否进行心理细分，但不取决于是否在细分级别上进行敲击。结果表明，同步中的相位校正不仅取决于异步，还取决于韵律层次结构中多个时间参考的感知监测。
