S5-1 Coordination Dynamics

Sensorimotor Constraints in Perceptual-Motor Coordination

Page 1

• Introduction to Sensorimotor Constraints

  • Discusses perceptual-motor coordination and dynamics.

Page 2

• Coordination Dynamics

  • Inter-limb Coordination

    • Bimanual movement serves as a model for coordination study.

  • Coordinative Structures

    • Concept of rules governing coordination patterns.

  • Stability of Coordination Patterns

    • Examination of stability and transitions between coordination patterns.

Page 3

• Objectives of Coordination Dynamics

  1. Bimanual Coordination

     • Explains bimanual coordination and sensorimotor constraints leading to synchronization.

  2. Coordinative Structures

     • Definition of coordinative structures.

  3. von Holst's Rules

     • Understanding von Holst's coordination principles.

Page 4

• Concept of Coordination Dynamics

  • Coordination Dynamics as solving the problem of many degrees of freedom in movement.

  • Focus on spatial, temporal, and functional patterns.

Page 5

• Research Study on Two-Handed Movements

  • Exploring coordination through simultaneous initiation and termination of movements.

  • Key Findings:

    • Kinematic data show tight coupling and synchronous timing despite speed differences.

    • Brain organizes movements into functional muscle groupings.

Page 6

• Experiment Inquiry

  • Investigates response of individuals to varying targets’ amplitude and precision.

Page 7 and 9

• Bimanual Coordination Modes

  • Classification into symmetric and asymmetric movements.

Page 8

• Data and Timing Analysis

  • Graphs illustrating performance differences between difficult and easy targets in relation to timing.

Page 10

• Movement Trajectories

  • Variation in hand movements during coordination tasks.

Page 11

• Functional Linkages in Coordination

  • Exploration of how individuals constrain movement for coordination tasks.

  • Importance of reducing independent components for stability.

Page 12

• Coordinative Structures and Brain Function

  • Brain's ability to create simultaneous actions and maximize efficiency in movements.

Page 13 to 16

• von Holst's Studies

  • Examines movement coordination between fins in fish and patterns of locomotion in centipedes.

  • Observations on coordination structure and performance stability.

Page 17

• Von Holst's Coordination Dynamics

  1. Maintenance Tendency

     • Dorsal fin maintains its rhythm.

  2. Magnet Effect

     • Attraction effect in coordination between limbs.

Page 19

• Rules of Coordination

  1. Limited performance patterns characterized by stability.

  2. Stability maintained until critical conditions trigger a transition.

  3. An inherent tendency towards more stable states.

Page 21

• Pattern Transitions in Coordination

  • Neuronal and mechanical influences on coordination stability.

Page 22

• Objectives of Pattern Transitions

  • Discuss key features of transitions in coordination patterns and their stability.

Page 23

• Critical Behavior during Bimanual Coordination

  • Observations of shifting phase states as frequency changes in movements.

Page 24 to 28

• Pattern Transition Dynamics

  • Describes phase (0° and 180°) relations in coordination patterns and stability dynamics.

Page 29

• Egocentric vs Allocentric Constraints

  • Examination of muscle activation relations in coordination movements.

Page 30 to 32

• Study on Bimanual Coordination Stability

  • Investigates synchrony of muscle activation patterns and their implications for stability.

Page 33 to 43

• Modulation of Cortical and Spinal Excitability

  • Discusses how rhythmic movements affect excitability in motor pathways.

Page 44

• Transition Patterns in Coordination

  • A summary of the patterns observed during coordination tasks.

Page 45

• Experimental Psychology Studies on Phase Transitions

  • Findings regarding visual coordination and its impact on rhythmic movements.

Page 47

• Recap of von Holst's Coordination Rules

  • Emphasizes the stability and transition dynamics of patterns in coordination.