If you are in a street and hear the sound of an approaching motorbike, you expect to see a motorbike, and not a horse, coming around the corner.
Researchers studying brain process involved in sight have discovered that the visual cortex also uses information gleaned from the ears as well as the eyes when viewing the world.
People rely on their eyes for most things they do. But, researchers say that even your eyes can deceive you.
Day in Pics: 23rd October
Showbiz World - October 23, 2014
Aamir Khan's sensational 'PK' posters