Table 1 Visual illusions used in the study.

From: Specific visual expertise reduces susceptibility to visual illusions

Illusion

Effect

Picture

Ebbinghaus

The central circle surrounded by smaller outer circles is usually perceived as bigger.

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Ponzo

The top line is perceived to be longer despite being the same length as the bottom line.

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Müller-Lyer

The line with the arrowheads pointing outwards is seen as longer than the line with arrowheads pointing inwards.

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Shepard Tabletops

The vertical parallelogram is perceived as longer and broader, despite them both being identical in size.

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