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Planum temporale asymmetry in newborn monkeys predicts the future development of gestural communication’s handedness

Author

Listed:
  • Yannick Becker

    (CNRS
    Max Planck Institute for Human Cognitive and Brain Sciences)

  • Romane Phelipon

    (CNRS)

  • Damien Marie

    (CNRS)

  • Siham Bouziane

    (CNRS)

  • Rebecca Marchetti

    (CNRS)

  • Julien Sein

    (CNRS)

  • Lionel Velly

    (CNRS)

  • Luc Renaud

    (CNRS)

  • Alexia Cermolacce

    (CELPHEDIA)

  • Jean-Luc Anton

    (CNRS)

  • Bruno Nazarian

    (CNRS)

  • Olivier Coulon

    (CNRS)

  • Adrien Meguerditchian

    (CNRS
    CELPHEDIA)

Abstract

The planum temporale (PT), a key language area, is specialized in the left hemisphere in prelinguistic infants and considered as a marker of the pre-wired language-ready brain. However, studies have reported a similar structural PT left-asymmetry not only in various adult non-human primates, but also in newborn baboons. Its shared functional links with language are not fully understood. Here we demonstrate using previously obtained MRI data that early detection of PT left-asymmetry among 27 newborn baboons (Papio anubis, age range of 4 days to 2 months) predicts the future development of right-hand preference for communicative gestures but not for non-communicative actions. Specifically, only newborns with a larger left-than-right PT were more likely to develop a right-handed communication once juvenile, a contralateral brain-gesture link which is maintained in a group of 70 mature baboons. This finding suggests that early PT asymmetry may be a common inherited prewiring of the primate brain for the ontogeny of ancient lateralised properties shared between monkey gesture and human language.

Suggested Citation

  • Yannick Becker & Romane Phelipon & Damien Marie & Siham Bouziane & Rebecca Marchetti & Julien Sein & Lionel Velly & Luc Renaud & Alexia Cermolacce & Jean-Luc Anton & Bruno Nazarian & Olivier Coulon & , 2024. "Planum temporale asymmetry in newborn monkeys predicts the future development of gestural communication’s handedness," Nature Communications, Nature, vol. 15(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47277-6
    DOI: 10.1038/s41467-024-47277-6
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    References listed on IDEAS

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    1. K. J. Forseth & G. Hickok & P. S. Rollo & N. Tandon, 2020. "Language prediction mechanisms in human auditory cortex," Nature Communications, Nature, vol. 11(1), pages 1-14, December.
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