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Related Experiment Video

Updated: Feb 10, 2026

A Zebrafish Model of Diabetes Mellitus and Metabolic Memory

A Zebrafish Model of Diabetes Mellitus and Metabolic Memory

Published on: February 28, 2013

A Bayesian Model of the Memory Colour Effect.

Christoph Witzel¹, Maria Olkkonen², Karl R Gegenfurtner¹

¹Universität Gießen, Allgemeine Psychologie, Gießen, Germany.

|May 16, 2018

Summary

This summary is machine-generated.

The memory color effect causes objects to appear in their typical colors, even when gray. A Bayesian model using prior knowledge of typical colors successfully modeled this effect for photographs.

Keywords:

bayesian model cognitive penetration colour vision memory object recognition

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Area of Science:

Cognitive psychology
Computational neuroscience
Visual perception

Background:

The memory color effect describes how object color perception is influenced by prior knowledge.
Previous research shows color-diagnostic objects retain a hue bias even when achromatic.

Purpose of the Study:

To model memory color effects using a Bayesian framework incorporating prior knowledge of typical object colors.
To assess the model's ability to capture the magnitude and variability of memory color effects.

Main Methods:

A Bayesian model was developed using prior knowledge of typical colors as priors for achromatic adjustments.
The model was tested against empirical data from achromatic adjustment experiments on object photographs.

Main Results:

The Bayesian model successfully captured the general magnitude of the memory color effect for object photographs.
The model partially predicted observed variations in memory color effects across different objects.
The model did not account for differences in memory color effects related to image realism.

Conclusions:

A simple Bayesian model effectively accounts for memory color effects by integrating prior knowledge.
The model highlights the role of prior knowledge in shaping color perception.
Further research is needed to explain variations related to image properties like realism.