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Related Concept Videos

Rotational Motion about a Fixed Axis01:26

Rotational Motion about a Fixed Axis

A rigid body's rotation around a fixed axis makes every point within it trace a circular path around a specific line or point. The term given to this type of spinning is defined by the angular position, symbolized by the angle θ. This angle is gauged from a static reference line to the revolving object. From this angular position, any variation is referred to as angular displacement, denoted by dθ. The extent of this displacement can be calculated in degrees, radians, or revolutions, where one...
Rotation with Constant Angular Acceleration - II01:16

Rotation with Constant Angular Acceleration - II

Kinematics is the description of motion. The kinematics of rotational motion discusses the relationships between rotation angle, angular velocity, angular acceleration, and time. One can describe many things with great precision using kinematics, but kinematics does not consider causes. For example, a large angular acceleration describes a very rapid change in angular velocity without any consideration of its cause. Thus, rotational kinematics does not represent the laws of nature.
The first...
Rotation with Constant Angular Acceleration - I01:37

Rotation with Constant Angular Acceleration - I

If angular acceleration is constant, then we can simplify equations of rotational kinematics, similar to the equations of linear kinematics. This simplified set of equations can be used to describe many applications in physics and engineering where the angular acceleration of a system is constant.
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Equation of Motion: Rotation About a Fixed Axis01:18

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Controlled Rotation of Human Observers in a Virtual Reality Environment
09:11

Controlled Rotation of Human Observers in a Virtual Reality Environment

Published on: April 21, 2022

Anticipated effort in imagined self-rotation.

Steven Macramalla1, Bruce Bridgeman

  • 1Department of Psychology, University of California Santa Cruz, Santa Cruz, CA 95064, USA. steven.r.macramalla@nasa.gov

Perception
|March 28, 2009
PubMed
Summary

Anticipated effort influences mental imagery, affecting imagined self-rotation speed based on distance and load. Spatial metrics and effort perception play roles in mental imagery coding.

Area of Science:

  • Cognitive Psychology
  • Neuroscience

Background:

  • Chronometric studies indicate mental imagery utilizes perceptual processes.
  • Recent research shows anticipated effort impacts perception.

Purpose of the Study:

  • To investigate the influence of anticipated effort on mental imagery.
  • To determine if spatial metrics and effort affect mental imagery.

Main Methods:

  • Experiment 1: Participants imagined self-rotation in settings of varying distances.
  • Experiment 2: Replicated distance effect and introduced imaginary load manipulation.

Main Results:

  • Imagined self-rotation was slower in larger settings, suggesting arc incorporation.
  • Imagined rotation was slower with imaginary heavy loads.

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  • Both spatial metrics and anticipated effort influenced mental imagery coding.
  • Conclusions:

    • Anticipated effort is a factor in mental imagery.
    • Mental imagery coding incorporates spatial metrics and perceived effort.