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Posthypnotic amnesia is a psychological phenomenon where individuals are unable to recall events that occurred while they were under hypnosis, due to a suggestion made by the hypnotist. This form of amnesia is considered psychogenic, meaning it stems from psychological factors rather than physical brain injury.12

Memory recall can often be restored by re-hypnotizing the individual and providing a counter-suggestion, or through persistent interrogation in a waking state. This suggests that the memory is not truly lost but rather inaccessible due to the hypnotic suggestion. Posthypnotic amnesia is a characteristic of deep hypnosis and can be induced intentionally.123

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