Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Stability of structures01:14

Stability of structures

380
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
380
Rigid Body Equilibrium Problems - II01:21

Rigid Body Equilibrium Problems - II

7.8K
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero.
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
7.8K
Rigid Body Equilibrium Problems - I00:49

Rigid Body Equilibrium Problems - I

5.2K
A rigid body is said to be in static equilibrium when the net force and the net torque acting on the system is equal to zero. To solve for rigid body equilibrium problems, do the following steps.
5.2K
Random and Systematic Errors01:20

Random and Systematic Errors

14.2K
Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
14.2K
Muscle Coordination and Action01:24

Muscle Coordination and Action

2.8K
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....
2.8K
Eccentric Loading01:16

Eccentric Loading

771
Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under...
771

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Recent Progress in the Physical Principles of Dynamic Ground Self-Righting.

Integrative and comparative biology·2024
Same author

Environmental force sensing helps robots traverse cluttered large obstacles.

Bioinspiration & biomimetics·2023
Same author

Contact feedback helps snake robots propel against uneven terrain using vertical bending.

Bioinspiration & biomimetics·2023
Same author

The bumpy road ahead: the role of substrate roughness on animal walking and a proposed comparative metric.

The Journal of experimental biology·2023
Same author

<b>Corrigendum: Snakes combine vertical and lateral bending to traverse uneven terrain (2022</b><i>Bioinsp.</i><i>Biomim.</i><b>17</b>036009).

Bioinspiration & biomimetics·2022
Same author

A terrain treadmill to study animal locomotion through large obstacles.

The Journal of experimental biology·2022

Related Experiment Video

Updated: Dec 13, 2025

Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

9.9K

Randomness in appendage coordination facilitates strenuous ground self-righting.

Qihan Xuan1, Chen Li1

  • 1Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, United States of America.

Bioinspiration & Biomimetics
|August 5, 2020
PubMed
Summary

Randomness in motion aids strenuous locomotion by preventing robots from getting stuck in poor coordination states. Introducing randomness helps systems explore more options and successfully self-right.

Keywords:
locomotionmetastabilitynoisephasepotential energy barrierterradynamics

More Related Videos

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
07:52

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

8.8K
A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance
07:19

A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance

Published on: March 19, 2020

6.2K

Related Experiment Videos

Last Updated: Dec 13, 2025

Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

9.9K
Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
07:52

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

8.8K
A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance
07:19

A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance

Published on: March 19, 2020

6.2K

Area of Science:

  • Robotics
  • Biomechanical Engineering
  • Locomotion Studies

Background:

  • Randomness is prevalent in biological and artificial systems, often viewed as detrimental to locomotor control.
  • In dynamic walking, environmental stochasticity can cause metastable dynamics requiring mitigation for stable limit cycles.

Purpose of the Study:

  • To investigate the potential benefits of motion randomness in strenuous locomotor tasks.
  • To explore if randomness aids in self-righting behaviors, inspired by cockroach locomotion.

Main Methods:

  • Developed a simplified robotic simulation model for leg-assisted, winged ground self-righting.
  • Varied randomness levels in wing-leg coordination during simulated self-righting attempts.

Main Results:

  • Increased randomness in the timing between wing opening and leg swinging enhanced the probability of successful self-righting in naive robots.
  • Wing-leg coordination phase critically impacted self-righting success.
  • Without randomness, systems were often trapped in unfavorable phases, failing to escape metastable states.

Conclusions:

  • Randomness can be beneficial for strenuous locomotion by preventing entrapment in undesired metastable states.
  • The study demonstrates randomness's role in exploring a wider range of coordination phases, improving the likelihood of successful self-righting.