Troxler's Fading
Updated 2026-08-02
INTRODUCTION
English translation pending.
CORE DEFINITION
Named after the Swiss physician Ignaz Troxler, who described it in, the effect appears when a viewer holds fixation steady for roughly twenty seconds or more. Unchanging peripheral targets fade from awareness until the visual field looks blank, and they return as soon as the eyes move. The cause is neural adaptation: receptors and cortical cells respond mainly to change, so a constant signal loses its ability to drive them.
SCAFFOLDING EFFECT
Reduce cognitive load
- Warn against frozen focus: treat a perfectly static fixation as a way to lose sight of everything around it - Keep the gaze moving: change vantage points and inputs so the surroundings keep sending signals - Test for change blindness: ask what has altered in an area you have stopped examining
Anchor fast decisions
Visual neurons signal change more than steady state. When fixation holds the image fixed on the same receptors, their response decays and the target stops reaching awareness. Any eye movement refreshes the pattern and restores the object, which shows that fading is caused by the stability of the input rather than by damage to the eye.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Troxler's_fadingverified
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