Abstract
A predictive behavior called "negative asynchrony" is well known in the sensory-motor coupling. This phenomenon means motion timings precede the cyclic onset of stimuli, and it is commonly observed in the synchronization tapping task. With the use of dual-task method, Miyake et al. had already analyzed this phenomenon and reported two types of anticipatory timing control. However, in such previous researches, the tapping task has been investigated by statistical analysis of synchronization errors (SE). In this report, we assume that the asynchronous displacement has temporal structure. And time-series analysis was applied to clarify it in frequency response. As a consequence, it was shown that anticipatory behavior in the tapping task had two different characters corresponding to two types of anticipatory timing control. One is characterized by a 1/fn power-law relation between spectral power and frequency. The other is characterized by the combination of the significant peak of pacing stimuli and a white noise.
