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

Calibration Curves: Linear Least Squares01:20

Calibration Curves: Linear Least Squares

5.3K
A calibration curve is a plot of the instrument's response against a series of known concentrations of a substance. This curve is used to set the instrument response levels, using the substance and its concentrations as standards. Alternatively, or additionally, an equation is fitted to the calibration curve plot and subsequently used to calculate the unknown concentrations of other samples reliably.
For data that follow a straight line, the standard method for fitting is the linear...
5.3K
Calibration Curves: Correlation Coefficient01:10

Calibration Curves: Correlation Coefficient

5.7K
In a linear calibration curve, there is a value called the calibration coefficient, denoted by 'r,' which measures the strength and the direction of association between two variables. The correlation coefficient value ranges from −1 to +1. A value of +1 indicates a perfect positive linear correlation, −1 denotes a perfect negative correlation, and 0 implies no correlation between the two variables. A positive correlation value establishes that as one variable increases, the...
5.7K
Glassware Calibration01:11

Glassware Calibration

2.0K
Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical laboratory. Calibration helps maintain consistency across measurements and prevents errors arising from inaccurate volumes.
Volumetric flasks: Volumetric flasks are designed to prepare aqueous solutions of precise volumes accurately with a calibration line on the neck. To calibrate a volumetric flask, it is important to fill it with distilled...
2.0K
Color Vision01:24

Color Vision

1.9K
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
1.9K
Perceptual Constancy01:12

Perceptual Constancy

1.8K
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...
1.8K
Impression Management Techniques IV: Altercasting01:14

Impression Management Techniques IV: Altercasting

247
Altercasting is a strategic communication technique in which an individual imposes a specific identity or social role onto another person to influence their behavior and shape the interaction. By presuming a role—such as “responsible leader” or “patient person”—altercasting encourages the target to conform to that identity, often aligning their behavior with the expectations associated with the role. The power of this tactic lies in its subtlety; once a role...
247

You might also read

Related Articles

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

Sort by
Same author

Perceptual Tuning to Structure: Integrating the Phonetic Detail of Coarticulatory Vowel Nasalization With Prosodic and Information Structure.

Language and speech·2026
Same author

The impact of rhotic allophony on spoken-word recognition during sound change.

Journal of experimental psychology. Human perception and performance·2026
Same author

A web-based mouse-tracking task for early perceptual language processing.

Behavior research methods·2025
Same author

Flexibility and Stability in Lexical Tone Recalibration: Evidence from Tone Perceptual Learning.

Language and speech·2024
Same author

Lexically Mediated Compensation for Coarticulation Still as Elusive as a White Christmash.

Cognitive science·2023
Same author

Selective adaptation of German /r/: A role for perceptual saliency.

Attention, perception & psychophysics·2022
Same journal

How Does the Mind Grow? Cross-Cultural Intuitive Theories of Mental Development.

Psychological science·2026
Same journal

Not All Practice Is Created Equal: Longitudinal Evidence From Over 40,000 Chess Players.

Psychological science·2026
Same journal

Eye Glint as a Novel Perceptual Cue in Human Vision.

Psychological science·2026
Same journal

Multitarget Visual Search Flexibly Switches Between Concurrent and Sequential Search Modes.

Psychological science·2026
Same journal

Motive Alignment Promotes Adolescents' Proenvironmental Behavior: A Field Experiment in Two Cultures.

Psychological science·2026
Same journal

Retributive Sentiments Track Both Deterrent and Compensatory Concerns in a Small-Scale Society and a WEIRD Sample.

Psychological science·2026
See all related articles

Related Experiment Video

Updated: Apr 2, 2026

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
14:38

Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Published on: November 2, 2012

12.3K

Recalibrating color categories using world knowledge.

Holger Mitterer1, Jan Peter de Ruiter

  • 1Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands. holger.mitterer@mpi.nl

Psychological Science
|August 30, 2008
PubMed
Summary
This summary is machine-generated.

Our study shows that world knowledge about object colors helps us perceive consistent object colors under different lighting conditions. This top-down information recalibrates color perception, improving color constancy.

More Related Videos

Training Synesthetic Letter-color Associations by Reading in Color
10:27

Training Synesthetic Letter-color Associations by Reading in Color

Published on: February 21, 2014

23.5K
Visualizing Visual Adaptation
04:43

Visualizing Visual Adaptation

Published on: April 24, 2017

9.7K

Related Experiment Videos

Last Updated: Apr 2, 2026

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
14:38

Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Published on: November 2, 2012

12.3K
Training Synesthetic Letter-color Associations by Reading in Color
10:27

Training Synesthetic Letter-color Associations by Reading in Color

Published on: February 21, 2014

23.5K
Visualizing Visual Adaptation
04:43

Visualizing Visual Adaptation

Published on: April 24, 2017

9.7K

Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Neuroscience

Background:

  • The color-constancy problem arises because perceived color is a product of both surface reflectance and illumination.
  • Bottom-up visual information alone is insufficient to resolve the ambiguity in color perception.
  • Top-down processing, including world knowledge, may play a crucial role in color constancy.

Purpose of the Study:

  • To investigate whether world knowledge about object colors aids in solving the color-constancy problem.
  • To determine if observers utilize prototypical color information as a top-down mechanism for color constancy.
  • To explore the role of color category recalibration in perceptual adjustments.

Main Methods:

  • Experimental manipulation of illumination conditions.
  • Assessment of object recognition and color perception.
  • Analysis of observers' use of world knowledge and color categories.

Main Results:

  • Observers successfully use world knowledge of prototypical object colors to improve color constancy.
  • World knowledge enables recalibration of color categories, leading to more stable color perception.
  • This top-down influence on color perception is demonstrated through experimental evidence.

Conclusions:

  • World knowledge is a critical top-down factor that enhances color constancy.
  • Color category recalibration is a key mechanism through which world knowledge influences color perception.
  • Similar top-down effects may generalize across different perceptual domains, such as language.