This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Special topics, Subject name: Anatomy
False interpretation of an existing stimulus is termed as 
Select and explain. 
A. Hallucination, B. Illusion, C. Dellusion, D. Delirium
B: Illusion
Answer: B: Illusion 
Explanation: Illusion Illusion is a false interpretation of an existing stimulus by the senses, eg person sees a stick as a snake and reacts accordingly. A normal person sometimes may get an illusion eg a tree may be interpreted as ghost but able to correct it. A mentally ill person is not able to correct the illusion. Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 360