Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Causes of Similarity-Dissimilarity Effect01:26

Causes of Similarity-Dissimilarity Effect

125
The similarity-dissimilarity effect, a fundamental concept in social psychology, explains how interpersonal similarities and differences influence attraction and social interactions. This effect is supported by three key psychological perspectives: balance theory, social comparison theory, and consensual validation.Balance Theory and Cognitive ConsistencyBalance theory, developed by Fritz Heider, posits that individuals seek cognitive consistency in their relationships. When two people share...
125
Perceptual Constancy01:12

Perceptual Constancy

948
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...
948
The Representativeness Heuristic02:13

The Representativeness Heuristic

16.5K
The representative heuristic describes a biased way of thinking, in which you unintentionally stereotype someone or something. For example, you may assume that your professors spend their free time reading books and engaging in intellectual conversation, because the idea of them spending their time playing volleyball or visiting an amusement park does not fit in with your stereotypes of professors.
16.5K
Centroid of a Body: Problem Solving01:03

Centroid of a Body: Problem Solving

1.6K
The centroid of a body is a crucial concept in engineering and physics. Finding the centroid of a body can help determine its stability, its balance point, and even its design. In this context, consider a thin wire bent in the form of a quarter circular arc. Polar coordinates are used to calculate the centroid. The wire is first divided into small differential elements of a length equal to the radius multiplied by the differential angle.
The x-coordinates and y-coordinates of each element's...
1.6K
Multiple Comparison Tests01:13

Multiple Comparison Tests

4.2K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
4.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Salience maps for judgments of frontal plane distance, centroids, numerosity, and letter identity inferred from substance-invariant processing.

Journal of vision·2025
Same author

Deriving the number of salience maps an observer has from the number and quality of concurrent centroid judgments.

Proceedings of the National Academy of Sciences of the United States of America·2023
Same author

Color scrambles reveal red and green half-wave linear mechanisms plus a mechanism selective for low chromatic contrast.

Vision research·2021
Same author

Theory of the perceived motion direction of equal-spatial-frequency plaid stimuli.

Psychological review·2020
Same author

Variation in target and distractor heterogeneity impacts performance in the centroid task.

Journal of vision·2019
Same author

How can observers use perceived size? Centroid versus mean-size judgments.

Journal of vision·2019
Same journal

Low prevalence targets are primarily missed due to mind wandering.

Attention, perception & psychophysics·2026
Same journal

An introduction to the special issue celebrating Mary A. Peterson.

Attention, perception & psychophysics·2026
Same journal

Properties of the threshold stimulus exposure duration (TSED) measure of visual search efficiency.

Attention, perception & psychophysics·2026
Same journal

Auditory selective attention in depth: Investigating directional dependency across front, lateral, and rear spaces.

Attention, perception & psychophysics·2026
Same journal

Dissociations between stereoacuity and visual acuity with binocular night vision goggles.

Attention, perception & psychophysics·2026
Same journal

Reward-based prioritization and perceptual feature effects on attentional flexibility in working memory.

Attention, perception & psychophysics·2026
See all related articles

Related Experiment Video

Updated: Nov 23, 2025

Using Informational Connectivity to Measure the Synchronous Emergence of fMRI Multi-voxel Information Across Time
07:12

Using Informational Connectivity to Measure the Synchronous Emergence of fMRI Multi-voxel Information Across Time

Published on: July 1, 2014

12.5K

Multiple concurrent centroid judgments imply multiple within-group salience maps.

Peng Sun1, Veronica Chu2, George Sperling3

  • 1Department of Cognitive Sciences, University of California, Irvine, Irvine, CA, 92697-5100, USA. peng.sun@uci.edu.

Attention, Perception & Psychophysics
|January 5, 2021
PubMed
Summary
This summary is machine-generated.

Humans can accurately compute centroids for three distinct color groups simultaneously, challenging the single salience map theory. This finding suggests the brain utilizes multiple salience maps for visual processing.

Keywords:
Centroid judgmentsFeature-based attentionPreconscious processingSalience mapsSummary statistics

More Related Videos

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
08:12

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

Published on: March 1, 2022

2.8K
Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

14.9K

Related Experiment Videos

Last Updated: Nov 23, 2025

Using Informational Connectivity to Measure the Synchronous Emergence of fMRI Multi-voxel Information Across Time
07:12

Using Informational Connectivity to Measure the Synchronous Emergence of fMRI Multi-voxel Information Across Time

Published on: July 1, 2014

12.5K
A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
08:12

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

Published on: March 1, 2022

2.8K
Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

14.9K

Area of Science:

  • Visual perception
  • Cognitive neuroscience
  • Computational modeling

Background:

  • Salience maps are crucial for guiding attention and processing visual information.
  • Current models suggest a single salience map is used, which is feature-agnostic.
  • Understanding how multiple visual features are processed is key to understanding visual attention.

Purpose of the Study:

  • To investigate the human ability to compute centroids for multiple color groups presented simultaneously.
  • To test the hypothesis that multiple salience maps are involved in processing distinct visual features.
  • To model the computational mechanisms underlying multi-color centroid judgment.

Main Methods:

  • Subjects viewed brief flashes of 8-24 multi-colored dots and were tasked with identifying color centroids.
  • Analysis included conventional, idea-detector, and Attention Operating Characteristics.
  • A computational model of salience processing was developed to explain the observed behavior.

Main Results:

  • Subjects accurately computed centroids for three color groups, even with limited dots (13/24).
  • Accuracy showed only a modest decrease compared to single-color centroid judgments.
  • Analysis revealed multiple sources of error, including attention filter efficiency and encoding.

Conclusions:

  • The ability to compute multiple centroids supports the existence of at least three parallel salience maps.
  • This challenges the traditional view of a single, feature-ignorant salience map.
  • The findings provide insights into the neural mechanisms of visual attention and feature segregation.