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Related Concept Videos

Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

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.
Inertial Frames of Reference01:03

Inertial Frames of Reference

Newton’s first law is usually considered to be a statement about reference frames. It provides a method for identifying a special type of reference frame: the inertial reference frame. In principle, we can make the net force on a body zero. If its velocity relative to a given frame is constant, then that frame is said to be inertial. So, by definition, an inertial reference frame is a reference frame where Newton's first law holds valid. Newton's first law applies to objects with constant...
Perceptual Constancy01:12

Perceptual Constancy

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.
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Factors Affecting Perception01:25

Factors Affecting Perception

Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
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Schemas

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Non-inertial Frames of Reference

A reference frame accelerating or decelerating relative to an inertial frame is a non-inertial frame. To help understand this, consider what taking off in an airplane, turning a corner in a car, riding a merry-go-round, and the circular motion of a tropical cyclone all have in common. All these systems are accelerating, decelerating, or rotating relative to the Earth; hence, they all are non-inertial frames. All these systems exhibit inertial forces, which merely seem to arise from motion,...

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Related Experiment Video

Updated: May 14, 2026

Observing the Transformation of Bodily Self-consciousness in the Squeeze-machine Experiment
07:20

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Published on: March 8, 2019

Age-related changes in attentional reference frames for peripersonal space.

Emily K Bloesch1, Christopher C Davoli, Richard A Abrams

  • 1Department of Psychology, Washington University, St. Louis, MO 63130, USA. ekbloesch@go.wustl.edu

Psychological Science
|February 22, 2013
PubMed
Summary

Older adults

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Human Aging Research

Background:

  • Neurological changes in older adults may alter their perception of peripersonal space.
  • Age-related cognitive shifts can impact attention allocation and action planning.

Purpose of the Study:

  • To investigate age-related differences in the mental representation of peripersonal space.
  • To compare how young and older adults utilize reference frames for action guidance.

Main Methods:

  • A study involving simple hand movement tasks was conducted.
  • Participants' attentional reference frames were analyzed during movement execution.

Main Results:

  • Young adults used a hand-centered reference frame for attention.

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Last Updated: May 14, 2026

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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

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Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

  • Older adults employed a body-centered reference frame for attention.
  • Significant differences in spatial representation were observed between age groups.

    • Conclusions:

    • Age-related differences in spatial reference frames significantly impact action planning and guidance.
    • These findings help explain age-associated declines in motor task performance.