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Related Experiment Video

Updated: Jun 8, 2026

Visualizing Visual Adaptation

Visualizing Visual Adaptation

Published on: April 24, 2017

Visual discomfort and natural image statistics.

Igor Juricevic¹, Leah Land, Arnold Wilkins

¹Department of Psychology, University of Nevada, 2601 Enterprise Road, Reno, NV 89512, USA. juricevi@univ.nevada.edu

|September 17, 2010

Summary

Visual discomfort, including headaches, is linked to unnatural image properties. The study found that images resembling natural scenes, with balanced luminance and color contrast, are least aversive.

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Measuring the Behavioral Effects of Intraocular Scatter

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Published on: February 18, 2021

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Last Updated: Jun 8, 2026

Visualizing Visual Adaptation

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Published on: April 24, 2017

Measuring the Behavioral Effects of Intraocular Scatter

Measuring the Behavioral Effects of Intraocular Scatter

Published on: February 18, 2021

Area of Science:

Visual perception
Image processing
Human-computer interaction

Background:

Uncomfortable visual stimuli, characterized by high medium spatial frequencies or high color/low luminance contrast, can induce headaches.
These stimuli deviate from the properties typically found in natural images.

Purpose of the Study:

To investigate if visual discomfort increases with deviations from the spatial and chromatic properties of natural scenes.
To determine the relationship between image characteristics and perceived visual discomfort or artistic merit.

Main Methods:

Observers rated discomfort and artistic merit for computer-generated images (noise, Mondrians) with manipulated spatial (luminance/chromatic contrast spectra) and chromatic properties.
Image sets varied in spectral slopes (blur to sharpness), color axes, and levels of luminance/chromatic contrast.

Main Results:

Discomfort was lowest for images with luminance slopes approximating a 'natural' 1/f spectrum.
Minimal discomfort was observed for color variations along bluish-yellowish axes, typical of natural scenes.
Discomfort increased with higher color contrast or lower luminance contrast; balanced contrast levels yielded lower discomfort.

Conclusions:

The least aversive images possess spatial and chromatic properties characteristic of the natural visual environment.
These findings suggest visual coding may be normalized to the natural world, minimizing discomfort from familiar stimuli.