Journal
MOTOR CONTROL
Volume 14, Issue 3, Pages 323-343Publisher
HUMAN KINETICS PUBL INC
DOI: 10.1123/mcj.14.3.323
Keywords
Oscillation; asynchrony; 1/f noise; limit cycle model; parametric driving
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We analyzed serial dependencies in periods and asynchronies collected during oscillations performed in synchrony with a metronome. Results showed that asynchronies contain 1/f fluctuations, and the series of periods contain antipersistent dependence. The analysis of the phase portrait revealed a specific asymmetry induced by synchronization. We propose a hybrid limit cycle model including a cycle-dependent stiffness parameter provided with fractal properties, and a parametric driving function based on velocity. This model accounts for most experimentally evidenced statistical features, including serial dependence and limit cycle dynamics. We discuss the results and modeling choices within the framework of event-based and emergent timing.
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