Two types of phase correction mechanism involved in synchronized tapping.
We clarify internal phase correction mechanisms affecting timing control in a synchronization tapping task. Synchronization error (SE) was directly controlled within 450-1800 ms of the inter stimulusonset interval (ISI) with our experimental method. Two types of internal phase correction mechanism became evident. The first showed a strong negative correlation between SE change and change in inter taponset interval (ITI), suggesting a simple negative feedback mechanism. This correlation was observed under all ISI conditions. The second type showed a larger response with a low negative correlation and was observed only with long (1200-1800 ms) ISIs. Only the second mechanism was inhibited in a dual task condition. These results suggest that there are two types of internal phase correction mechanism.
Takano
Kouji
K
Department of Computational Intelligence and Systems Science, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama 226-8502, Japan.
Miyake
Yoshihiro
Y
D000161:Acoustic Stimulation; D000328:Adult; D001288:Attention / Q000502:physiology*; D001921:Brain / Q000502:physiology; D005246:Feedback / Q000502:physiology*; D005385:Fingers / Q000294:innervation / Q000502:physiology; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D009068:Movement / Q000502:physiology*; D009433:Neural Inhibition / Q000502:physiology; D009483:Neuropsychological Tests; D011930:Reaction Time / Q000502:physiology; D013998:Time Perception / Q000502:physiology*