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How a Story Is Told Drives Distinct Memory Networks in the Brain

Brain scans showed that concept-focused and sensory-rich narratives recruit different hippocampal connections that forecast later recall.

Overview

  • In a Journal of Neuroscience study, 35 young adults listened to everyday stories that emphasized either conceptual thoughts and emotions or perceptual sensory details during fMRI.
  • Conceptual narratives were linked to stronger anterior hippocampal connectivity with regions of the default mode network involved in self-referential and emotional processing.
  • Perceptual narratives strengthened hippocampal connections with lateral temporal, parietal, and other non–default mode regions tied to memory performance.
  • The hippocampal–cortical connectivity patterns observed while listening predicted how accurately participants later recalled the stories’ core events.
  • Authors suggest these neural signatures could guide tailoring of information for different groups, such as older adults, though this application has not yet been tested.