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Related Experiment Video

Updated: Aug 4, 2025

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Naturalistic viewing increases individual identifiability based on connectivity within functional brain networks.

Jean-Philippe Kröll1, Patrick Friedrich1, Xuan Li1

  • 1Institute of Neuroscience and Medicine, Brain and Behaviour (INM-7), Research Centre Jülich, Jülich 52428, Germany; Institute of Systems Neuroscience, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf 40225, Germany.

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Summary

Naturalistic viewing (NV) enhances individual brain connectivity identification compared to resting-state. Specific brain networks and movie stimuli are key for detecting these unique functional connectivity (FC) patterns.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Functional Neuroimaging

Background:

  • Naturalistic viewing (NV) is a promising paradigm for studying individual differences in functional brain organization.
  • Previous research has characterized whole-brain functional connectivity (FC) during NV, but network-level analysis remains less explored.
  • Understanding network-level FC during NV is crucial for advancing individual difference research in neuroscience.

Purpose of the Study:

  • To investigate the influence of NV on functional connectivity (FC) within fourteen meta-analytically derived brain networks.
  • To compare FC patterns during NV with three different movie stimuli against resting-state (RS) conditions.
  • To assess how NV affects individual variability in network FC by examining within- and between-subject similarity.

Main Methods:

  • Analyzed functional connectivity (FC) in fourteen brain networks across participants undergoing naturalistic viewing (NV) with three movie stimuli and resting-state (RS).
  • Compared individual identifiability based on FC between NV and RS conditions.
  • Assessed within- and between-subject similarity in network FC during both NV and RS.

Main Results:

  • Naturalistic viewing (NV) increased individual identifiability over resting-state (RS) in specific brain networks.
  • Movie stimuli, particularly those with a narrative, showed distinct FC patterns compared to RS.
  • NV enhanced inter-subject variability in network FC while maintaining within-subject similarity, indicating individually distinct patterns, but this effect varied by network-stimulus combination.

Conclusions:

  • Naturalistic viewing (NV) improves the detection of individual differences in functional brain connectivity compared to resting-state (RS).
  • The effectiveness of NV in revealing individual differences is dependent on the specific brain network and the chosen movie stimulus.
  • Selecting appropriate network-stimulus combinations is critical for maximizing the utility of NV in research on individual brain variability.