Brain exercise: are these lines, top-down, parallel?

lines

1) In your eyes?
2) In reality?

Do you have a guess on what is going on? Answer posted as a Comment.

If you liked this brain teaser, you will enjoy these Top 10 Brain Teasers and Games, with a neuroscience angle.

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3 Comments »

  1. asd said

    yes they are parallel

  2. Alvaro said

    Yes, they are parallel. Pay attention to a single row, and then look at the adjacent one. The lines appear parallel.

    Lines outside direct focus, in peripheral vision, bend.

  3. Christopher Panayis said

    black colour makes the surrounded white look smaller in surface

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