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Auditory areas are recruited for naturalistic visual meaning in early deaf people

Author

Listed:
  • Maria Zimmermann

    (Jagiellonian University
    Johns Hopkins University)

  • Rhodri Cusack

    (Trinity College Institute of Neuroscience)

  • Marina Bedny

    (Johns Hopkins University)

  • Marcin Szwed

    (Jagiellonian University)

Abstract

Congenital deafness enhances responses of auditory cortices to non-auditory tasks, yet the nature of the reorganization is not well understood. Here, naturalistic stimuli are used to induce neural synchrony across early deaf and hearing individuals. Participants watch a silent animated film in an intact version and three versions with gradually distorted meaning. Differences between groups are observed in higher-order auditory cortices in all stimuli, with no statistically significant effects in the primary auditory cortex. Comparison between levels of scrambling revealed a heterogeneity of function in secondary auditory areas. Both hemispheres show greater synchrony in the deaf than in the hearing participants for the intact movie and high-level variants. However, only the right hemisphere shows an increased inter-subject synchrony in the deaf people for the low-level movie variants. An event segmentation validates these results: the dynamics of the right secondary auditory cortex in the deaf people consist of shorter-length events with more transitions than the left. Our results reveal how deaf individuals use their auditory cortex to process visual meaning.

Suggested Citation

  • Maria Zimmermann & Rhodri Cusack & Marina Bedny & Marcin Szwed, 2024. "Auditory areas are recruited for naturalistic visual meaning in early deaf people," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-52383-6
    DOI: 10.1038/s41467-024-52383-6
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    References listed on IDEAS

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    1. Francesca Setti & Giacomo Handjaras & Davide Bottari & Andrea Leo & Matteo Diano & Valentina Bruno & Carla Tinti & Luca Cecchetti & Francesca Garbarini & Pietro Pietrini & Emiliano Ricciardi, 2023. "A modality-independent proto-organization of human multisensory areas," Nature Human Behaviour, Nature, vol. 7(3), pages 397-410, March.
    2. Manoj Kumar & Cameron T Ellis & Qihong Lu & Hejia Zhang & Mihai Capotă & Theodore L Willke & Peter J Ramadge & Nicholas B Turk-Browne & Kenneth A Norman, 2020. "BrainIAK tutorials: User-friendly learning materials for advanced fMRI analysis," PLOS Computational Biology, Public Library of Science, vol. 16(1), pages 1-12, January.
    3. Velia Cardin & Eleni Orfanidou & Jerker Rönnberg & Cheryl M. Capek & Mary Rudner & Bencie Woll, 2013. "Dissociating cognitive and sensory neural plasticity in human superior temporal cortex," Nature Communications, Nature, vol. 4(1), pages 1-5, June.
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