Have you seen something in front of you, and a few minutes later? Have you heard someone calling your name in an empty house? Have you felt someone walking behind you and then turned to find that no one is there? These are different types of hallucinations, when we hear the word hallucinations always think of psychological clinics, schizophrenia and madness. But this is a wrong information, as hallucinations may occur to any natural person if he is subjected to poisoning, disease, or injury in an accident, and it may occur to each other even because of the sudden waking up. People with migraine may see sparkling arches of light or hearing strange music.