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

Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

1.1K
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
1.1K
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

591
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
591
Relative Motion Analysis - Velocity01:24

Relative Motion Analysis - Velocity

481
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...
481
Relative Motion Analysis using Rotating Axes - Acceleration01:22

Relative Motion Analysis using Rotating Axes - Acceleration

433
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
433
Perceptual Constancy01:12

Perceptual Constancy

696
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
696
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

479
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
479

You might also read

Related Articles

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

Sort by
Same author

Differences in perceived travel distance from central versus peripheral optic flow are the same when standing and walking.

PloS one·2026
Same author

How the characteristics of a virtual environment affects the perception of travel distance through it.

PloS one·2026
Same author

Feasibility and impact of virtual reality exposure therapy on epilepsy-specific anxiety: Phase 3 of the AnxEpiVR pilot clinical trial.

Epilepsy & behavior reports·2026
Same author

Failure to replicate the Aubert-Fleischl effect.

PloS one·2025
Same author

Audio-Visual Integration in 3D Space Near the Body.

Multisensory research·2025
Same author

Can visual acceleration evoke a sensation of tilt?

Experimental brain research·2025

Related Experiment Video

Updated: Oct 15, 2025

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform
10:12

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform

Published on: May 23, 2013

16.1K

Object speed perception during lateral visual self-motion.

Björn Jörges1, Laurence R Harris2

  • 1Center for Vision Research, York University, 4700 Keele Street, Toronto, ON, M3J 1P3, Canada. bjoerges@yorku.ca.

Attention, Perception & Psychophysics
|October 27, 2021
PubMed
Summary
This summary is machine-generated.

Estimating object speed during self-motion is complex. This study found that visual self-motion simulation in 3D environments allows accurate perception of object speed with minimal precision loss.

More Related Videos

Video-oculography in Mice
09:43

Video-oculography in Mice

Published on: July 19, 2012

24.0K
Author Spotlight: Exploring the Link Between Time Perception of Visual Stimuli and Reading Skills
09:27

Author Spotlight: Exploring the Link Between Time Perception of Visual Stimuli and Reading Skills

Published on: January 19, 2024

1.4K

Related Experiment Videos

Last Updated: Oct 15, 2025

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform
10:12

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform

Published on: May 23, 2013

16.1K
Video-oculography in Mice
09:43

Video-oculography in Mice

Published on: July 19, 2012

24.0K
Author Spotlight: Exploring the Link Between Time Perception of Visual Stimuli and Reading Skills
09:27

Author Spotlight: Exploring the Link Between Time Perception of Visual Stimuli and Reading Skills

Published on: January 19, 2024

1.4K

Area of Science:

  • Visual perception
  • Motion perception
  • Human factors

Background:

  • Judging object speed requires separating self-motion from object motion cues.
  • The Flow Parsing hypothesis suggests self-motion estimation is subtracted from retinal input.
  • Visual self-motion simulation may lead to underestimation of self-motion, impacting speed judgments.

Purpose of the Study:

  • To test the Flow Parsing hypothesis regarding visual self-motion simulation.
  • To investigate the accuracy and precision of object speed judgments during simulated self-motion.
  • To determine if simulated self-motion affects perceived target speed.

Main Methods:

  • A two-alternative forced-choice task was used to compare perceived speeds.
  • Participants judged the speed of a target in an immersive 3D environment.
  • Conditions included static viewing and visually simulated self-motion (same/opposite direction).

Main Results:

  • No significant bias in speed judgments was observed across conditions.
  • Perceptual precision decreased significantly only when simulated self-motion was opposite to target motion.
  • Object speed perception remained accurate with only a small precision cost.

Conclusions:

  • The Flow Parsing hypothesis may not fully apply in ecologically valid 3D environments.
  • Accurate object speed perception is achievable with visually simulated self-motion.
  • Rich self-motion cues in 3D environments support robust motion perception.