- wundt-fick illusion
- see top hat illusion.
Dictionary of Hallucinations. J.D. Blom. 2010.
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top hat illusion — Also known as Lincoln s top hat illusion and Wundt Fick illusion. All three terms refer to a size optical illusion or a geometric optical illusion involving the top hat or stove pipe hat worn on certain photographs by US President Abraham… … Dictionary of Hallucinations