Handedness and the Asymmetric Dynamics of Bimanual Rhythmic Coordination

Human handedness was investigated in a 1:1 interlimb rhythmic coordination in which consistent and inconsistent left-handed and right-handed individuals oscillated hand-held pendulums. Mean phase difference (φ stable ) and its standard deviation ( SD φ) were evaluated as functions of mode of coordin...

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Bibliographic Details
Published in:Journal of experimental psychology. Human perception and performance 1995-04, Vol.21 (2), p.318-333
Main Authors: Treffner, Paul J, Turvey, M. T
Format: Article
Language:English
Subjects:
Handedness
Human
Motor ability
Perceptual Motor Coordination
Psychology
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Summary:Human handedness was investigated in a 1:1 interlimb rhythmic coordination in which consistent and inconsistent left-handed and right-handed individuals oscillated hand-held pendulums. Mean phase difference (φ stable ) and its standard deviation ( SD φ) were evaluated as functions of mode of coordination (in-phase vs. anti-phase) and the symmetry conditions imposed by controlling the natural frequencies of the left and right pendulums. The dependencies of φ stable and SD φ on coordination mode and imposed symmetry were found to be systematically affected by handedness. The data were consistent with an elaboration of the established order parameter dynamics of interlimb rhythmic coordination. The elaboration includes additional 2π periodic terms that break the symmetry of those dynamics when the natural frequencies of the component rhythmic units are identical.
ISSN:0096-1523
1939-1277
DOI:10.1037/0096-1523.21.2.318