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Related Concept Videos

Muscle Coordination and Action01:24

Muscle Coordination and Action

Muscle coordination is a complex and finely tuned process essential for smooth and purposeful movements like flexion, extension, adduction, abduction, and rotation. The human body orchestrates the actions of various muscles working in concert, each with a specific role. Four functional types describe how muscles work together: agonist, antagonist, synergist, and fixator.
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement.
Motor Units01:13

Motor Units

The motor unit is a fundamental component of the neuromuscular system and plays a crucial role in coordinating muscle contractions. It consists of a somatic motor neuron, which connects and controls multiple skeletal muscle fibers, forming a single functional segment. The axon of the motor neuron branches out and establishes synaptic connections known as neuromuscular junctions with individual muscle fibers within the motor unit.
Motor units come in different sizes, with smaller units...
Motor Units00:46

Motor Units

A motor unit consists of two main components: a single efferent motor neuron (i.e., a neuron that carries impulses away from the central nervous system) and all of the muscle fibers it innervates. The motor neuron may innervate multiple muscle fibers, which are single cells, but only one motor neuron innervates a single muscle fiber.
Simplification of a Force and Couple System: II01:23

Simplification of a Force and Couple System: II

In a three-dimensional system, multiple forces can act on an object. These forces can be combined into a single equivalent force, known as the resultant force. Similarly, the moments generated by these forces can be combined into a single equivalent moment, the resultant couple moment. In certain situations, these two entities may not be mutually perpendicular, meaning they do not have a 90-degree angle between them. This unique condition requires a deeper understanding of the interplay between...
Hierarchy of Motor Control01:18

Hierarchy of Motor Control

The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
Couples: Scalar and Vector Formulation01:21

Couples: Scalar and Vector Formulation

One might wonder how the captain of a large ship can navigate through the ocean with just a turn of the steering wheel. The answer lies in the concept of two parallel forces that are equal in magnitude and opposite sense, creating a couple moment.
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Related Experiment Video

Updated: Jun 3, 2026

Efficiently Recording the Eye-Hand Coordination to Incoordination Spectrum
07:30

Efficiently Recording the Eye-Hand Coordination to Incoordination Spectrum

Published on: March 21, 2019

Motor coordination: when two have to act as one.

Daniel A Braun1, Pedro A Ortega, Daniel M Wolpert

  • 1Department of Engineering, Computational and Biological Learning Laboratory, University of Cambridge, Cambridge, UK. dab54@cam.ac.uk

Experimental Brain Research
|April 2, 2011
PubMed
Summary

Two-person motor coordination in sensorimotor tasks is common. Successful coordination in games like "chicken" depends on initial positions and response timing.

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Last Updated: Jun 3, 2026

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Area of Science:

  • Neuroscience
  • Behavioral Economics
  • Robotics

Background:

  • Human interaction often involves complex coordination games with multiple solutions.
  • Understanding sensorimotor coordination is crucial for fields ranging from human-robot interaction to social neuroscience.

Purpose of the Study:

  • To investigate sensorimotor coordination in tasks mirroring classic game theory coordination problems.
  • To identify features characterizing successful two-person motor coordination.

Main Methods:

  • Subjects performed reaching movements in tasks based on coordination games (e.g., 'chicken', 'stag hunt').
  • Payoffs were delivered as continuous resistive forces, guiding players toward Nash equilibria.
  • Movement data, including endpoints and timing, were analyzed for mutual information and entropy.

Main Results:

  • Coordination was achieved in the majority of trials.
  • Successful coordination showed increased mutual information and joint entropy between players' movements.
  • Coordination success correlated with initial player positions relative to Nash equilibria.

Conclusions:

  • Two-person motor coordination emerges naturally in interactive tasks.
  • Favorable initial conditions, consistent movement patterns, and response time differences facilitate successful coordination.