There is a (pun intended) kink in this method of processing visual information however, which arises in the form of an illusion in the ... cusp of smooth versus zig-zag, we’ll err on the side ...

Here's an example of the illusion: A series of wavy horizontal lines are shown. All of the lines have exactly the same shape - a sine curve. However, half of the lines appear to have a much more ...

Can you spot an old woman or a young girl hidden in this Century Old Optical Illusion? The challenge is to spot what’s hiding in the image in between the zig-zag lines, which will tell if you ...

To demonstrate the new phenomenon, Dr Takahashi designed an optical illusion which appears to consist of pairs of dashed wavy lines and zig-zags, lain over a white, grey and black background.

The illusion is described and explained in the journal i-Perception, and has been dubbed "curvature blindness". In the image, you see multiple pairs of zig-zag and curved lines with three ...