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Updated: May 8, 2026
08:18
Visualizing Motion Patterns in Acupuncture Manipulation
Published on: July 16, 2016
Joint action syntax in Japanese martial arts.
Yuji Yamamoto1, Keiko Yokoyama, Motoki Okumura
1Research Center of Health, Physical Fitness, and Sports, Nagoya University, Nagoya, Japan.
Plos One
|September 12, 2013
Summary
Human competitors in sports like fencing exhibit complex movements by switching between simple dynamics. This behavior, driven by quick responses, forms a hybrid system enabling intelligent action and coordination.
Area of Science:
- Dynamical systems theory
- Human motor control
- Sports science
Background:
- Interpersonal competitions demand rapid decision-making and motor responses.
- Complex behaviors in sports can emerge from simpler underlying principles.
Purpose of the Study:
- To analyze intentional switching dynamics in continuous movement during interpersonal competition.
- To understand how these dynamics emerge from a simple syntax.
Main Methods:
- Utilized linear functions on return maps to identify attractors and transitions.
- Examined second- and third-order state-transition diagrams to assess skill differences.
- Characterized abrupt switching and quick-response behavior.
Main Results:
- Identified two distinct attractors and the transitions between them.
- Skill differences influenced state-transition diagrams for these attractors.
- Abrupt switching between attractors correlates with diverse continuous movements and rapid environmental responses.
Conclusions:
- Complex human actions in competition arise from a hybrid dynamical system.
- This system integrates discrete (higher module) and continuous (lower module) dynamics.
- Intelligent behavior, autonomy, and coordination in real-world scenarios are underpinned by this hybrid system.
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