Abstract
Several types of tap rhythms by plural number of subjects were measured and analyzed, in terms of synchronization to determine at what timing multiple subjects were synchronized or not during an ensemble. Furthermore, EEG data was also measured and analyzed in order to investigate what phenomena were evoked from rhythmic tapping. As a result, it was found from the former that there were transient synchronizations in the rhythm patterns which were easy to play. And from the latter, (1) EEG peak at low frequency, which was roughly equal to the frequency of the tapping, was found;(2) the peak frequency of alpha waves was shifted according to the difficulty of the tapping. Consequently, these results suggested that the asynchronization of timing among subjects was caused not by simple random errors, but by some biological mechanism.
