Question

How do ellusion occur and what do they tell about our sensation?

Answer 1

An illusion is a distortion of the senses, which can reveal how the human brain normally organizes and interprets sensory stimulation. Though illusions distort our perception of reality, they are generally shared by most people.[1]

Illusions may occur with any of the human senses, but visual illusions (optical illusions) are the best-known and understood. The emphasis on visual illusions occurs because vision often dominates the other senses. For example, individuals watching a ventriloquistwill perceive the voice is coming from the dummy since they are able to see the dummy mouth the words