Hallbium is a brain disorder in which a person “seems” to be performing some action in the past. You should not think that in this way our brain clears itself of experiences or stores some events. This is a common phenomenon that is not a pathology and does not pose any threat to health. Sometimes a hallucination can be a minor memory or information that was previously received by the person. When the brain concentrates on this area, a distortion occurs and the real event is turned upside down.