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関節運動におけるカオス的特徴
Chaotic Properties of Rhythmic Forearm Movement
2000
The Japanese Journal of Ergonomics
Chaotic Properties of Rhythmic Forearm Movement
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Chaotic Properties of Rhythmic Forearm Movement Tetsuya Miyoshi and Atsuo Murata (Hiroshima City University) 1.は じ め に 近 年,脳 波 や 心 電 図,心 拍 な ど の生 体 信 号 が カ オ ス的 特 徴 を持 つ と報 告 され て い る1).カ オ ス の特 徴 と して ...
emerge from the properties of nonlinear , limit cycle oscillatory process: Theory and Data, J. of Motor Behavior, 13, pp.226-261, 1981 4) P.J.Beek, E.I.Walter and C.W.Piet:Limit cycle properties of rhythmic ...
doi:10.5100/jje.36.supplement_432
fatcat:cpsqkqdiuvehbi5ys57ot3ecea
Deterministic and stochastic features of rhythmic human movement
2005
Biological cybernetics
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The dynamics of rhythmic movement has both deterministic and stochastic features. ...
Subsequently, we exemplify the method's merits in extracting deterministic and stochastic aspects of various instances of rhythmic movement, including tapping, wrist cycling and forearm oscillations. ...
of modelling rhythmic movements in terms of self-sustaining oscillations or limit cycles, either with or without noise. ...
doi:10.1007/s00422-005-0041-9
pmid:16380845
fatcat:jmjjjjapmzg3naqzo65zez3m3a
Variability and Determinism in Motor Behavior
2002
Journal of Motor Behavior
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In tutorial fashion, the authors review the concepts of variability and determinism with respect to postural and rhythmic movements. ...
Study of the variability of those behaviors has revealed crucial features suggestive of underlying mechanisms and control, such as particular blends of noise and determinism (piecewise determinism). ...
In their analysis of rhythmic forearm movements, for instance, Zak et al. (1997) used a rate of I kHz. ...
doi:10.1080/00222890209601934
pmid:12057885
fatcat:lv2ycyprgnbkxjy5gwt6wabbqu
Dynamics of effortful touch and interlimb coordination
1998
Journal of Biomechanics
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control of biological movements. ...
This research also suggests that the assembled rhythms exploit the unique blend of stability and variability characteristic of low-dimensional chaotic motion on strange attractors. ...
The contributions of Claudia Carello, both conceptual and artistic, are gratefully acknowledged. ...
doi:10.1016/s0021-9290(98)00066-9
pmid:9840752
fatcat:ccuf2ekddfavjonwvnkf5tmeru
The primacy of rhythm: how discrete actions merge into a stable rhythmic pattern
2019
Journal of Neurophysiology
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Stable rhythmic patterns may simplify control of movement and serve as dynamic primitives for more complex actions. ...
These findings are discussed in the context of previous neuroimaging results showing that rhythmic movements involve significantly fewer cortical and subcortical activations than discrete movements and ...
ACKNOWLEDGMENTS We thank Nikita Kuznetsov and Oliver Cervantes for contributions at the early stage of this project. ...
doi:10.1152/jn.00587.2018
pmid:30565969
pmcid:PMC6397394
fatcat:hppjehlhuzbnzloirrtf6w5h7y
Adiabatic invariants drive rhythmic human motion in variable gravity
[article]
2019
bioRxiv
pre-print
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Natural human movements are stereotyped. They minimise cost functions that include energy, a natural candidate from mechanical and physiological points of view. ...
We fill this gap and show that the theory of adiabatic invariants explains how humans move when gravity varies. ...
The observation of rapid adaptation of rhythmic forearm movements suggests that vestibular and proprioceptive feedback are the major source of information used by CPGs to ensure adjustments to altered ...
doi:10.1101/674143
fatcat:qomm2o7b4vbgdl7qnusqzzlaby
Physicality as a performer-specific perspectival point to I. Xenakis's piano work: Case study Mists
2011
Zenodo
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Subsequently, I rethink a list of the most common challenges (physical effort, non-linear keyboard, complex rhythm, form and detail) against a historically informed background, including: a reading of ...
The emerging notion of corporeal navigation, demonstrated through multi-layered tablatures, is hopefully a useful tool towards the demystification of difficulty in Xenakian performance, as well as an original ...
This monotimeline is in itself opening in a perpetually renewable multitude of learning paths, reflecting the very specific properties of the materials; a movement inside the materials and in between them ...
doi:10.5281/zenodo.6347422
fatcat:ymb6nwh7rvgfdhowd5deybtmmu
The Human Motor Control System's Response to Mechanical Perturbation: Should It, Can It and Does It Ensure Stability?
2005
Journal of Motor Behavior
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Moreover, properties of nerves, muscles, and tendons present serious challenges to stabilization. ...
The observations encompass situations of position maintenance as well as impending or ongoing movement. ...
The challenge arises from the properties of peripheral elements: nerves, muscles, and tendons. ...
doi:10.3200/jmbr.37.6.484-493
pmid:16280319
fatcat:u44se2qknbhf5kjsirtlfqudh4
Steady-state and perturbed rhythmical movements: A dynamical analysis
1991
Journal of Experimental Psychology: Human Perception and Performance
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The purpose of this study was to derive the qualitative dynamical properties of a simple type of voluntary rhythmical activity. ...
To this end, rhythmic finger movements were examined in the steady-state and when momentarily perturbed by a torque pulse. ...
In this article, we report on the macroscopic dynamical properties of a simple, one-joint voluntary rhythmic movement. ...
doi:10.1037//0096-1523.17.1.183
pmid:1826311
fatcat:6gfrqz422rd4bohc2pallobjiy
Dynamic primitives of motor behavior
2012
Biological cybernetics
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We present in outline a theory of sensorimotor control based on dynamic primitives, which we define as attractors. ...
To account for the broad class of human interactive behaviors-especially tool use-we propose three distinct primitives: submovements, oscillations, and mechanical impedances, the latter necessary for interaction ...
Dagmar Sternad was supported by The National Institutes of Health R01-HD045639 and the American Heart Association 11SDG7270001, and the National Science Foundation NSF DMS-0928587. ...
doi:10.1007/s00422-012-0527-1
pmid:23124919
pmcid:PMC3735361
fatcat:7n6wnohw7zc4tbam76bccyxuqu
Human Control of Interactions with Objects – Variability, Stability and Predictability
[chapter]
2017
Springer Tracts in Advanced Robotics
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In rhythmic ball bouncing, subjects exploit the dynamic stability of the paddle-ball system. ...
In rhythmic ball bouncing, subjects exploit 17 the dynamic stability of the paddle-ball system. ...
a combination of complex rhythmic finger movements 828 combined with reaches across the keyboard. ...
doi:10.1007/978-3-319-51547-2_13
fatcat:fim45q22avgnxpke6zoejc6lky
Bioinformatic Approaches Used in Modelling Human Tremor
2009
Current Bioinformatics
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Tremor is a common movement disorder, for which pharmacological and neurophysiological models have been developed these last 3 decades, and which is at the frontier of biology, health sciences and computer ...
Bioinformatics is a field of information technology concerning the storage, retrieval, analysis, visualization, prediction and analysis of sets of data with biological or clinical significance. ...
Pathological Tremor Pathological Tremor is usually a rhythmic and roughly sinusoidal oscillatory movement. ...
doi:10.2174/157489309788184747
fatcat:kts5h6kgxzchfb6ejxgiprl4jy
Space–time behavior of single and bimanual rhythmical movements: Data and limit cycle model
1987
Journal of Experimental Psychology: Human Perception and Performance
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How do space and time relate m rhythmical tasks that reqmre the hmbs to move singly or together m various modes of coordination ? ...
a number of fundamental aspects of movement coordination and control schaft, Bonn Thanks to David Ostry, John Scholz, Howard Zelazmk, and three anonymous reviewers for comments Correspondence concermng ...
Stochastic properties of rhythmic movement patterns may be ex-plored independent ofperturbataon experiments by appropriate spectral analysis of the time-series data (see, e.g., Kelso & Scholz, 1985) ...
doi:10.1037/0096-1523.13.2.178
fatcat:vkevot5zojbszjtbfrqmr4bmce
Space-time behavior of single and bimanual rhythmical movements: Data and limit cycle model
1987
Journal of Experimental Psychology: Human Perception and Performance
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a number of fundamental aspects of movement coordination and control How do space and time relate m rhythmical tasks that require the hands to move singly or together in various modes of coordi-nation9 ...
How do space and time relate m rhythmical tasks that reqmre the hmbs to move singly or together m various modes of coordination ? ...
Stochastic properties of rhythmic movement patterns may be ex-plored independent ofperturbataon experiments by appropriate spectral analysis of the time-series data (see, e.g., Kelso & Scholz, 1985) ...
doi:10.1037//0096-1523.13.2.178
pmid:2953849
fatcat:rfn3gl6rubaazfk7osiqd52fsu
Concurrent Cognitive Task Modulates Coordination Dynamics
2005
Cognitive Science
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Does a concurrent cognitive task affect the dynamics of bimanual rhythmic coordination? ...
In-phase coordination was performed under manipulations of phase detuning and movement frequency and either singly or in combination with an arithmetic task. ...
during an instance of interlimb rhythmic coordination. ...
doi:10.1207/s15516709cog0000_12
pmid:21702784
fatcat:ytnpxsjw5fextdxlfrz3rcxldu
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