Retrocognition is a type of clairvoyance. It is the gift of knowing by supernatural means events that have occurred in the past. Thus, by physical contact with an object or by hearing a sound, one can access visions or sensations that are the psychic trace of the event that occurred. The human being is more sensitive to retrocognition when in hypnotic trance.
It has not been possible to discover what kind of contacts trigger these visions or sensations. It also has not been possible to demonstrate that the facts, whatever their type, generate a “psychic trace” that can generate these visions.