How the hippocampus distinguishes true and false memories

In a paper published in Proceedings of the National Academy of Sciences, University of Pennsylvania neuroscientists show for the first time that electrical signals in the human hippocampus differ immediately before recollection of true and false memories. They also found that low-frequency activity in the hippocampus decreases as a function of contextual similarity between a falsely recalled word and the target word.

“Whereas prior studies established the role of the hippocampus in event memory, we did not know that electrical signals generated in this region would distinguish the imminent recall of true from false memories,” says psychology professor Michael Jacob Kahana, director of the Computational Memory Lab and the study’s senior author. He says this shows that the hippocampus stores information about an item with the context in which it was presented.

…“Individuals suffering from stress-related psychopathology, such as post-traumatic stress disorder, often experience memory intrusions of their traumatic experiences under contexts that are safe and dissimilar to the traumatic incident. Targeted interventions that disrupt retrieval of intrusive memories could spawn novel therapies for such clinical conditions,” the researchers write.

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Besides being interesting in itself, this finding also confirms the value of FIML practice. Ongoing FIML practice is designed to act as ‘Targeted interventions that disrupt retrieval of intrusive memories.’ FIML finds and corrects intrusive memories as well as mistaken interpretations and associations. Since FIML is meant to be used often, over time it clears the mind of most, if not all, habitual mistakes in listening, seeing and thinking while also removing new mistakes as they are just forming. There is abundant science showing that interrupting or disrupting erroneous or neurotic responses has great curative efficacy. And also it optimizes our use of mental and psychological energy. Here is just one example: Disruption of neurotic response in FIML practice. ABN

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