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83 points•36 comments•3h ago•by mdp2021•studyfinds.com ↗

Aging Brains Blend Memories Together Instead of Just Forgetting Them

New brain-imaging research shows aging changes how memories are recalled. Among older adults, stronger similarity between learning and recall brain patterns in the hippocampus is linked to cross-category errors—confusing a face paired with an object with a scene—rather than to better recall. The study, with 61 participants aged 18 to 74, found that hippocampal shrinkage or baseline organization only partially explain the pattern, and attention differences did not account for the errors; the authors say the memory system shifts from precise replay to broader misbinding, though the exact cause remains open.

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