| Summary: | Empirical evidence for upper and lower rate li-mits of sensorimotor synchronization (typically, finger tapping with anauditory or visual event sequence) is reviewed. If biomechanical constraints are avoided, the upper rate limit can be as high as 8-10 Hz (sequence event inter-onset intervals of 100-125 ms) with auditory stimuli, but has been found to be less than 2.5 Hz (> 400 ms) with simple visual stimuli (flashesof light). The upper rate limit for auditory stimuli varies with task difficulty and musical experience; that for visual stimuli requires further investigation. The lower rate limit, according to one definition,tend stobe at about 0.56 Hz (1800 ms), regardless of modality. Attentional, perceptual, and sensorimotor explanations of these limits are considered. Rate limits of sensorimotor synchronization place important constraints on musical ensemble performance and other forms of rhythmic coordination.
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