Yes there are several hypnotic techniques where the client can be directed to past experiences known as regressions and revivications. Hypnosis may be used to add context to memories of past events. It is important to keep focus on the context of the hypnotic experience rather than the content revealed. This is because the mind works by metaphor and the specific content that comes from regression or revivication is likely to be a metaphorical representation. This is a feature of regression taken into account in forensic hypnosis where information extracted by hypnosis is dismissed from primary witnesses.
