Michael J. Richardson

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The variability of coupled rhythmic limb movements is assumed to be a consequence of the strength of a movement's attractor dynamic and a constant stochastic noise process that continuously perturbs the movement system away from this dynamic. Recently, it has been suggested that the nonlinear technique of recurrence analysis can be used to index the effects(More)
The pull to coordinate with other individuals is fundamental, serving as the basis for our social connectedness to others. Discussed is a dynamical and ecological perspective to joint action, an approach that embeds the individual's mind in a body and the body in a niche, a physical and social environment. Research on uninstructed coordination of simple(More)
There is contention in perceptual-motor research concerning the degree to which observing biological and non-biological movements have equivalent effects on movement production. This issue results from the proposal that action observation and production share neural resources (i.e., mirror neurons) particularly sensitive to actions performed by other(More)
Previous research has revealed that the behavioral dynamics of joint-action can naturally emerge from the physical and informational constraints that define a shared task-goal. The emergence of complementary actions or functional differences in control also appear to be a natural part of such behavior, and are often an inherent aspect of robust and highly(More)
The complex systems principle of self-organization provides a new way of understanding the behavioral dynamics behind the emergent, spontaneous exchanges of musical performance. In biological self-organization, energy is expended in the form of work which operates to maintain order in a system, collectively constraining the possible behaviors the components(More)
The current experiments investigated the fractal structure in the nested actions of tapping behavior. The results revealed that task constraints (e.g., tapping to a metronome) alter the fractal structure of a given aspect of the behavior (e.g., inter-tap interval) and decouple its long-term interactions with other aspects of the behavior (e.g., key-press(More)
Individuals make decisions under uncertainty every day based on incomplete information concerning the potential outcome of the choice or chance levels. The choices individuals make often deviate from the rational or mathematically objective solution. Accordingly, the dynamics of human decision-making are difficult to capture using conventional, linear(More)