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Related Concept Videos

Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
Support Reactions in Three Dimensions01:27

Support Reactions in Three Dimensions

Support reactions in three dimensions help maintain the stability and equilibrium of various structures and systems. These reactions prevent the system from translating and rotating, ensuring the design can withstand external forces and perform its intended function efficiently and safely. Some of the supports providing support reactions in three dimensions are discussed below:
Ball and Socket Joint is one of the supports allowing free rotation about any axis. This freedom of rotation is...
Three-Dimensional Force System01:30

Three-Dimensional Force System

In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

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.
Here, in order to determine the magnitude of velocity and acceleration for point...
Two-Dimensional Force System: Problem Solving01:29

Two-Dimensional Force System: Problem Solving

Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
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Anatomical Movements00:51

Anatomical Movements

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Related Experiment Video

Updated: Jun 3, 2026

Three-Dimensional Mapping of the Rotation of Interactive Virtual Objects with Eye-Tracking Data
06:36

Three-Dimensional Mapping of the Rotation of Interactive Virtual Objects with Eye-Tracking Data

Published on: October 18, 2024

Three-dimensional transformations for goal-directed action.

J Douglas Crawford1, Denise Y P Henriques, W Pieter Medendorp

  • 1York Centre for Vision Research, Canadian Action and Perception Network, and Departments of Psychology, Toronto, Ontario, Canada, M3J 1P3. jdc@yorku.ca

Annual Review of Neuroscience
|April 5, 2011
PubMed
Summary

This study proposes that the 3-D geometry of eye-head-reach systems, not just translational geometry, is key for visuomotor transformations. This framework unifies gaze and reach control, highlighting gaze-centered representations and orientation-based transformations.

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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 3, 2026

Three-Dimensional Mapping of the Rotation of Interactive Virtual Objects with Eye-Tracking Data
06:36

Three-Dimensional Mapping of the Rotation of Interactive Virtual Objects with Eye-Tracking Data

Published on: October 18, 2024

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:

  • Neuroscience
  • Motor Control
  • Computational Neuroscience

Background:

  • Visuomotor transformations are crucial for goal-directed movements like gaze and reach.
  • Current models often rely on translational geometry, focusing on stimulus location and endpoints.

Purpose of the Study:

  • To propose a new theoretical framework for understanding visuomotor transformations.
  • To integrate the intrinsic 3-D geometry of the eye-head-reach system into models of motor control.
  • To provide a unified understanding of gaze and reach control.

Main Methods:

  • Theoretical framework development.
  • Synthesis of behavioral, neurophysiological, imaging, and neuropsychological literature.
  • Analysis of intrinsic (rotational) 3-D geometry in eye-head-reach systems.

Main Results:

  • The intrinsic 3-D geometry of the eye-head-reach system dictates spatial relationships between goals and commands.
  • Internal representations of visual goals are primarily gaze-centered.
  • These representations undergo transformation based on eye and head orientation signals.

Conclusions:

  • A unified framework for gaze and reach control is established.
  • Visuomotor transformations are fundamentally influenced by the system's rotational geometry.
  • Gaze-centered representations are converted into effector-specific 3-D movement commands via orientation signals.