Abstract
Synchronization tapping is a psychological task for studying timing control mechanism. In this timing mechanism, negative feedback in phase error correction and period error correction has been assumed. The effect of phase error was already measured and its negative feedback process was studied, however the effect of period error has not been clarified yet. Therefore, we directly controlled the period error in synchronization tapping task to study the feedback mechanism. And Dual task method was further applied to analyze the influence from attention. As a result, it is suggested that the period error correction is a negative feedback process and the role of attention is also clarified. This new observation will contribute not only for the basic psychological research but also for the human interface application.
