Optical/Auditory Illusions

Optical Illusions

 * Ponzo illusion: An illusion where there are two yellow lines on a "railroad". The lines seem to have different lengths, but they have the same size. This illusion uses monocular cues of depth perception to fool the eye.
 * Checker shadow illusion: An illusion where there is a checker board that contains a cylinder to cast a shadow and 2 squares marked as A and B. What this is is that square A seems darker, but they have the same shade of gray.

Auditory Illusions

 * McGurk effect: This is an illusion where "the perception alters what we hear", or in other words, this example: the syllable /ba-ba/ is spoken over the lip movements of /ga-ga/, and the perception is of /da-da/