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Illusions

Visual psychologists love illusions, because they provide a means of understanding how the brain and the visual system interact. Here are a few well known ones.

The size of the surrounding circles affects our perception of the size of the centre circle

Another disruption of our perception of parallel lines: this time by horizontal and vertical interference

We tend to fill in the contours of the illusory triangle, rather than completing the circles

Muller-Lyer illusion: most people see the vertical line on the left as longer than the one on the right

More illusions can be found at http:\\michaelbach.de

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