Related Experiment Video
Updated: Jul 20, 2026

Computer-Generated Animal Model Stimuli
Published on: July 29, 2007
[Pattern-induced after effects caused by an on-screen workstation]
1Augenbelegabteilung Krankenhaus Wermelskirchen GmbH, Bruckenweg 1, 42929 Wermelskirchen. gkluxen@t-online.de
Abstract:
Millions of people work or spend their free time sitting in front of VDUs that induce contingent visual effects. However, only a few notice irritations in the course of everyday work: motion after-images such as the waterfall illusion or tilt after-effects are possible. A new effect may be caused by those new VDU monitors which have an almost square pattern in the display matrix in which the vertical lines are thicker than the horizontal lines. After-images persisting for days are described when this pattern has an edge length of 0.3 mm and over. These effects are of little concern to most users of VDUs.
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