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Related Concept Videos

Indirect Motor Pathways01:22

Indirect Motor Pathways

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The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
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The direct motor pathways, also known as the pyramidal tracts, are a group of neural pathways that originate in the brain and descend through the spinal cord. They control the voluntary movement of the body. There are two major direct motor pathways: the corticospinal and the corticobulbar tracts.
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The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
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Mechanical Systems01:22

Mechanical Systems

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Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
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Root-Locus Method

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A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
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Related Experiment Video

Updated: Apr 15, 2026

Deep-Learning Based Multi-Joint Synchronous Tracking for Objective Quantification of Hindlimb Locomotor Kinematics in Rats
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Goal-directed multimodal locomotion through coupling between mechanical and attractor selection dynamics.

S G Nurzaman1, X Yu, Y Kim

  • 1Bio-Inspired Robotics Laboratory, Institute of Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland.

Bioinspiration & Biomimetics
|March 27, 2015
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Summary

This study enables robots to switch between multiple locomotion modes by coupling mechanical dynamics with an attractor selection model. This approach allows for adaptive, goal-directed movement in diverse environments.

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Area of Science:

  • Robotics
  • Bio-inspired systems
  • Control theory

Background:

  • Multimodal locomotion is crucial for robots to adapt to varied environments.
  • Locomotion dynamics arise from interactions between internal control, mechanical dynamics, and the environment.

Purpose of the Study:

  • To develop an approach for robots to leverage multiple locomotion modes.
  • To couple a robot's mechanical dynamics with an attractor selection model for adaptive control.

Main Methods:

  • Utilized a curved-beam hopping robot with complex environmental interactions.
  • Employed dynamical coupling between mechanical dynamics and an attractor selection model.
  • Regulated locomotion mode shifting via sensory input, mechanical dynamics, and internal perturbations.

Main Results:

  • Demonstrated goal-directed locomotion in the hopping robot.
  • Showcased graceful shifting between different locomotion modes.
  • Validated the approach through simulations and real-world experiments.

Conclusions:

  • Coupling mechanical dynamics with attractor selection enables effective multimodal locomotion.
  • The developed approach enhances robotic adaptability and task performance.
  • This method offers a pathway for more versatile bio-inspired robots.