Shared understanding of narratives is correlated with shared neural responses

Area of Science:

• Cognitive Neuroscience
• Neuroimaging
• Psychology of Narrative

Background:

• Humans readily interpret meaning from abstract and ambiguous narratives.
• Individual interpretations of narratives can vary significantly.
• Understanding the neural basis of these interpretation differences is crucial.

Purpose of the Study:

• To investigate how the brain represents subtle, idiosyncratic differences in interpreting abstract narratives.
• To explore neural similarities corresponding to shared interpretations across different sensory modalities.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was employed to scan subjects.
• Participants viewed an abstract animation or listened to its verbal narration.
• Intersubject representational similarity analysis compared interpretation and neural similarity.

Main Results:

• Greater similarity in narrative interpretation correlated with more similar neural responses.
• These shared neural responses were observed in the default mode network (DMN) and fronto-parietal network.
• Shared interpretations elicited similar neural activity in linguistic areas and parts of the DMN, regardless of narrative modality (visual vs. verbal).

Conclusions:

• A network of high-level brain regions supports individual differences in narrative interpretation.
• These neural representations are robust across different sensory modalities.
• The findings highlight the brain's flexibility in processing and understanding complex, ambiguous stories.