March 3, 2026Vision Research2 citations

Contrast Sensitivity Across the Visual Field: The Fourth Root Rule

Summation of contrast across the visual field: A common “fourth root” rule holds from the fovea to the periphery

View Full Paper

Ask AI

Bookmark

Authors

Discussion

Observational analysis reveals the fourth root rule applies to contrast sensitivity in human vision, indicating uniformity in perception.

Contrast sensitivity follows a consistent fourth root rule across visual fields, from the fovea to periphery.
Key evidence suggests a notable effect on visual processing as contrast changes, impacting overall perception.
Observational analysis utilizing psychophysical measurements demonstrates findings across various visual field locations.
These insights may enable a deeper understanding of visual perception mechanisms in human vision.

Baldwin et al. (2026) studied this question.

View Full Paper

Ask AI

Bookmark

March 3, 2026Vision Research2 citations

Summation of contrast across the visual field: A common “fourth root” rule holds from the fovea to the periphery

View Full Paper

Ask AI

Bookmark

Authors

Observational analysis reveals the fourth root rule applies to contrast sensitivity in human vision, indicating uniformity in perception.

Contrast sensitivity follows a consistent fourth root rule across visual fields, from the fovea to periphery.
Key evidence suggests a notable effect on visual processing as contrast changes, impacting overall perception.
Observational analysis utilizing psychophysical measurements demonstrates findings across various visual field locations.
These insights may enable a deeper understanding of visual perception mechanisms in human vision.

Baldwin et al. (2026) studied this question.

Synapse has enriched one closely related paper. Consider it for comparative context:

View Full Paper

Ask AI

Bookmark