Optical illusions with hidden images are amazing for testing your visual powers. These illusion images challenge your brain's ...

A visual evoked potential (VEP) test is one test that a doctor may use to diagnose multiple sclerosis and monitor disease treatment and progression. Your brain and spinal cord make up your central ...

Optical illusions, especially those with hidden objects, test how quickly and efficiently your brain can analyse visual information. Many illusions rely on our brain's ability to recognise patterns.