Author ORCID Identifier
Document Type
Article
Publication Date
7-10-2018
Abstract
Tasks encountered in daily living may have instabilities and more dimensions than are sampled by the senses such as when carrying a cup of coffee and only the surface motion and overall momentum are sensed, not the fluid dynamics. Anticipating non-periodic dynamics is difficult but not impossible because mutual coordination allows for chaotic processes to synchronize to each other and become periodic. A chaotic oscillator with random period and amplitude affords being stabilized onto a periodic trajectory by a weak input if the driver incorporates information about the oscillator. We studied synchronization with predictable and unpredictable stimuli where the unpredictable stimuli could be non-interactive or interactive. The latter condition required learning to control a chaotic system. We expected better overall performance with the predictable but more learning and generalization with unpredictable interactive stimuli. Participants practiced an auditory-motor synchronization task by matching their sonified hand movements to sonified tutors: the Non-Interactive Predictable tutor (NI-P) was a sinusoid, the Non-Interactive Unpredictable (NI-U) was a chaotic system, the Interactive Unpredictable (I-U) was the same chaotic system with an added weak input from the participant’s movement. Different pre/post-practice stimuli evaluated generalization. Quick improvement was seen in NI-P. Synchronization, dynamic similarity, and causal interaction increased with practice in I-U but not in NI-U. Generalization was seen for few pre-post stimuli in NI-P, none in NI-U, and most stimuli in I-U. Synchronization with novel chaotic dynamics is challenging but mutual interaction enables the behavioral control of such dynamics and the practice of complex motor skills.
DOI
https://doi.org/10.1016/j.humov.2018.06.016
Journal Title
Human Movement Science
Volume
61
First Page
27
Last Page
41
Recommended Citation
Dotov D, Froese T (2018) Entraining chaotic dynamics: A novel movement sonification paradigm could promote generalization Human Movement Science, 61, 27–41. https://doi.org/10.1016/j.humov.2018.06.016
Creative Commons License
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Comments
This is an Accepted Manuscript of an article published by Elsevier in Human Movement Science on July 10, 2018, available online: https://doi.org/10.1016/j.humov.2018.06.016