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Related Concept Videos

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.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
Association Areas of the Cortex01:21

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Gestalt Principles of Perception01:21

Gestalt Principles of Perception

Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
Perception01:28

Perception

Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
Self-Regulation01:25

Self-Regulation

Self-regulation, also known as self-control, encompasses a range of cognitive and behavioral processes that allow individuals to adjust their internal states and outward actions to align with socially acceptable norms and long-term goals. It plays a fundamental role in adaptive functioning, from resisting impulsive behaviors to persisting through challenging tasks. While its benefits are widely recognized, self-regulation is not limitless. Muraven and Baumeister's theory posits that...
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.
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...

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Related Experiment Video

Updated: Jul 3, 2026

WheelCon: A Wheel Control-Based Gaming Platform for Studying Human Sensorimotor Control
08:18

WheelCon: A Wheel Control-Based Gaming Platform for Studying Human Sensorimotor Control

Published on: August 15, 2020

Perceptual influences on Fitts' law.

A J Kovacs1, J J Buchanan, C H Shea

  • 1Department of Health and Kinesiology, Texas A&M University, College Station, TX 77843-4243, USA.

Experimental Brain Research
|July 24, 2008
PubMed
Summary

An enlarged visual display changed the movement time (MT) and index of difficulty (ID) relationship in Fitts' tasks. Larger displays enabled cyclical control, resulting in a quadratic MT-ID relationship for high difficulty tasks.

Area of Science:

  • Human motor control
  • Human-computer interaction
  • Perceptual-motor performance

Background:

  • Fitts' task studies the relationship between movement time and task difficulty.
  • The linear relationship between movement time (MT) and index of difficulty (ID) is a well-established finding.
  • The role of visual display size in modulating this relationship is less understood.

Purpose of the Study:

  • To investigate how enlarged visual displays affect the MT-ID relationship in reciprocal aiming tasks.
  • To determine if increased visual information alters motor control strategies.

Main Methods:

  • Reciprocal aiming tasks were performed with varying indices of difficulty (ID = 3, 4.5, 6).
  • Participants used enlarged visual displays (visual angles: 5.1°, 7.4°, 13.3°).

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Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
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Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

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A Two-interval Forced-choice Task for Multisensory Comparisons
07:13

A Two-interval Forced-choice Task for Multisensory Comparisons

Published on: November 9, 2018

Related Experiment Videos

Last Updated: Jul 3, 2026

WheelCon: A Wheel Control-Based Gaming Platform for Studying Human Sensorimotor Control
08:18

WheelCon: A Wheel Control-Based Gaming Platform for Studying Human Sensorimotor Control

Published on: August 15, 2020

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
05:43

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

Published on: May 23, 2019

A Two-interval Forced-choice Task for Multisensory Comparisons
07:13

A Two-interval Forced-choice Task for Multisensory Comparisons

Published on: November 9, 2018

  • Movement time and control strategies were analyzed.

    • Main Results:

    • A large visual display (13.3°) induced a quadratic MT-ID relationship at ID = 6.
    • This suggests a shift towards cyclical action control with enhanced visual feedback.
    • Smaller visual displays did not alter the linear MT-ID relationship for IDs 3 and 4.5.

    Conclusions:

    • Salient visual information can enable the motor system to utilize more efficient control strategies, like harmonic motion.
    • The motor system's preference for assembling movements from harmonic basis functions is influenced by visual display size.
    • Enlarged visual displays can alter fundamental relationships in human motor control for specific task difficulties.