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

Velocity and Position by Graphical Method01:34

Velocity and Position by Graphical Method

Velocity and position can be calculated from the known function of acceleration as a function of time. The total area under the acceleration-time graph and the velocity-time graph gives the change in velocity and position, respectively. In the case of an airplane, its acceleration is tracked using the inertial navigation system. The pilot provides the input of the airplane's initial position and velocity before takeoff. The inertial navigation system then uses the acceleration data to calculate...
Relative Motion Analysis - Velocity01:24

Relative Motion Analysis - Velocity

A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
Relative Velocity in One Dimension01:10

Relative Velocity in One Dimension

The understanding of the concept of reference frames is essential to discuss relative motion in one or more dimensions. When we say that an object has a certain velocity, we must state the velocity with respect to a given reference frame. In most examples, this reference frame has been Earth. For instance, if a statement reads that a person is sitting in a train moving at 10 m/s east, then it implies that the person on the train is moving relative to the surface of Earth at this velocity,...
Instantaneous Velocity - I01:15

Instantaneous Velocity - I

The average velocity during a time interval cannot tell us how fast or in what direction a particle is moving at any given time during the interval. To calculate this, it is important to know the instantaneous velocity, which is the velocity at a specific instant of time or at a specific point along the path. Instantaneous velocity is the quantity that measures how fast an object is moving along its path. In other words, the instantaneous velocity vx of an object is the limit of the average...
Velocity of an Object01:18

Velocity of an Object

Understanding how an object moves along a path requires distinguishing between motion over a time span and motion at a precise moment. A useful example is a vehicle traveling along a straight and level path, where its position at any given time is known. The initial step in analyzing this motion is to measure how far the vehicle travels over a fixed time period. This measurement, called average velocity, is computed by dividing the total change in position by the duration over which the change...
Average Velocity01:12

Average Velocity

To calculate the other physical quantities in kinematics, we must introduce the time variable. The time variable allows us not only to state the position of the object during its motion, but also how fast it is moving. The speed at which an object is moving is given by the rate at which the position changes with time. For each position xi, we assign a particular time ti. If the details of the motion at each instant are not important, the rate is usually expressed as the average velocity. This...

You might also read

Related Articles

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

Sort by
Same author

Perceiving the affordance of interceptability for multiple others.

Human movement science·2026
Same author

Perceiving the affordance of interceptability for another.

Frontiers in psychology·2025
Same author

Testing an Innovative Gait Training Program in Immersive Virtual Reality for Healthy Older Adults: Protocol for a Randomized Controlled Trial.

JMIR research protocols·2025
Same author

Toward an Operational Dynamical Model of Lateral Manual Interception Behavior.

Motor control·2024
Same author

Perceptuomotor skill acquisition in a solo manual ball-and-beam task with varying accuracy requirements.

Frontiers in psychology·2024
Same author

Virtual reality to characterize anticipation skills of top-level 4 x 100 m relay athletes.

European journal of sport science·2024

Related Experiment Video

Updated: Jun 4, 2026

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

Visual control of walking velocity.

Matthieu François1, Antoine H P Morice, Reinoud J Bootsma

  • 1UMR 6233 CNRS and University of the Mediterranean, Institute of Movement Sciences Etienne-Jules MAREY, France.

Neuroscience Research
|February 25, 2011
PubMed
Summary

This study shows that visual cues like Global Optic Flow Rate (GOFR) and Edge Rate (ER) help regulate walking speed. Manipulating these optical cues altered participants' walking velocity, demonstrating their role in self-motion control.

More Related Videos

Home-Based Monitor for Gait and Activity Analysis
07:24

Home-Based Monitor for Gait and Activity Analysis

Published on: August 8, 2019

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

Related Experiment Videos

Last Updated: Jun 4, 2026

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

Home-Based Monitor for Gait and Activity Analysis
07:24

Home-Based Monitor for Gait and Activity Analysis

Published on: August 8, 2019

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

Area of Science:

  • Human locomotion
  • Visual perception
  • Robotics

Background:

  • Optical correlates of self-motion velocity are known.
  • Their specific role in controlling displacement velocity requires further investigation.

Purpose of the Study:

  • To investigate the role of Global Optic Flow Rate (GOFR) and Edge Rate (ER) in regulating walking velocity.
  • To understand how visual information contributes to the control of self-motion velocity.

Main Methods:

  • Utilized a virtual reality setup combined with a treadmill.
  • Manipulated eye height and texture density to perturb the relationship between walking velocity and optical flow.
  • Conducted gait analyses to examine step length and duration adjustments.

Main Results:

  • Both GOFR and ER were found to be crucial for controlling walking speed.
  • Participants adjusted their walking velocity when optical cues led to velocity overestimation or underestimation.
  • Adjustments in walking velocity were achieved through simultaneous changes in step length and step duration.

Conclusions:

  • Visual information, specifically GOFR and ER, plays a significant role in the real-time regulation of walking velocity.
  • The findings contribute to understanding visual feedback mechanisms in locomotion and self-motion perception.