What question did this study set out to answer?

To explore how both peripheral and central components contribute to the formation of visual illusions.

March 21, 2026

Peripheral and Central Components in the Formation of Visual Illusions

Key Points

To explore how both peripheral and central components contribute to the formation of visual illusions.
Analyzed physiological and psychological factors affecting visual perception.
Discussed lateral inhibition and optical aberrations as peripheral influences.
Considered learned patterns and cue utilization as central influences.
Investigated the phenomenon of illusion decrement in relation to these components.
Identified both peripheral and central factors contributing to visual distortions.
Observed that continued inspection decreases the strength of many illusions.
Proposed that illusion decrement can help determine the balance between peripheral and central contributions.

Abstract

ABSTRACT Visual illusions involving distortions of apparent length, size, and direction have been shown to be caused by both peripheral (physiological) and central (psychological) factors. Peripheral components include lateral inhibitory interactions or blurring due to optical aberrations. Central components include distortions from learned patterns of information sampling and cue utilization. With continued inspection, many illusions show diminished magnitudes. It is suggested that this phenomenon of illusion decrement may be used to ascertain the relative contributions of central and peripheral components. In addition, a discussion of the possible implications of illusion decrement for the understanding of the mechanisms involved in perceptual distortions is included.

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