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Related Concept Videos

Relative Motion Analysis using Rotating Axes

Relative Motion Analysis using Rotating Axes

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 instrumental in...

Relative Motion Analysis using Rotating Axes - Acceleration

Relative Motion Analysis using Rotating Axes - Acceleration

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...

Relative Motion Analysis - Acceleration

Relative Motion Analysis - Acceleration

A slider-crank mechanism 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. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...

Absolute Motion Analysis- General Plane Motion

Absolute Motion Analysis- General Plane Motion

Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
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Relative Motion Analysis - Velocity

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.
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Relative Motion Analysis using Rotating Axes-Problem Solving

Relative Motion Analysis using Rotating Axes-Problem Solving

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.
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Related Experiment Video

Updated: May 21, 2026

MPI CyberMotion Simulator: Implementation of a Novel Motion Simulator to Investigate Multisensory Path Integration in Three Dimensions

MPI CyberMotion Simulator: Implementation of a Novel Motion Simulator to Investigate Multisensory Path Integration in Three Dimensions

Published on: May 10, 2012

Motion adaptation reveals that the motion vector is represented in multiple coordinate frames.

Tal Seidel Malkinson¹, Tal Seidel Malkinson, Ayelet McKyton

¹Department of Neurobiology, Hebrew University, Jerusalem, Israel. tal.seidel@mail.huji.ac.il

Journal of Vision

|June 26, 2012

Summary

This summary is machine-generated.

Perceiving object velocity during smooth pursuit eye movements (SPEM) relies on non-retinal motion representation. Spatiotopic motion, not just retinal motion, significantly drives motion aftereffects, indicating parallel motion computation systems.

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Video Movement Analysis Using Smartphones (ViMAS): A Pilot Study

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Published on: March 14, 2017

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Last Updated: May 21, 2026

MPI CyberMotion Simulator: Implementation of a Novel Motion Simulator to Investigate Multisensory Path Integration in Three Dimensions

MPI CyberMotion Simulator: Implementation of a Novel Motion Simulator to Investigate Multisensory Path Integration in Three Dimensions

Published on: May 10, 2012

Video Movement Analysis Using Smartphones (ViMAS): A Pilot Study

Video Movement Analysis Using Smartphones (ViMAS): A Pilot Study

Published on: March 14, 2017

Area of Science:

Neuroscience
Vision Science
Cognitive Psychology

Background:

Perceiving object velocity during smooth pursuit eye movements (SPEM) is challenging because objects are nearly stationary on the retina.
This suggests a non-retinal representation of motion vectors is crucial for accurate velocity perception.

Purpose of the Study:

To investigate the frames of reference for motion vector representation during SPEM.
To determine whether motion adaptation occurs in retinal or spatiotopic coordinates.

Main Methods:

Evoked motion aftereffects during smooth pursuit eye movements (SPEM).
Compared adaptation to a stimulus moving retinotopically versus spatiotopically.
Controlled for SPEM itself by having participants pursue a target without a background stimulus.

Main Results:

Significant motion adaptation was observed following exposure to spatiotopic motion.
Adaptation to spatiotopic motion was greater than adaptation to purely retinal motion.
Pursuit of a target without a background stimulus did not induce adaptation.

Conclusions:

Motion computation during SPEM likely involves parallel processing in distinct representations.
A low-level, retinal-motion dependent mechanism and a high-level spatiotopic representation are involved.
Veridical motion perception is achieved through integrating information from multiple sources.