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Related Experiment Video

Updated: Jul 30, 2025

Author Spotlight: Investigating Vocal Information Representation in Small Primates and Its Alteration by Psychiatric Disorders Using Noninvasive EEG
07:52

Author Spotlight: Investigating Vocal Information Representation in Small Primates and Its Alteration by Psychiatric Disorders Using Noninvasive EEG

Published on: July 26, 2024

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A vocalization-processing network in marmosets.

Azadeh Jafari1, Audrey Dureux1, Alessandro Zanini1

  • 1Centre for Functional and Metabolic Mapping, Robarts Research Institute, University of Western Ontario, London, ON, Canada.

Cell Reports
|May 17, 2023
PubMed
Summary
This summary is machine-generated.

The primate brain processes vocalizations using a fronto-temporal network. This network, found in marmosets, suggests an ancient origin for human voice perception, predating primate divergence.

Keywords:
CP: Neuroscienceanterior cingulate cortexauditory cortexcommon marmosetcomparative approachconspecific vocalizationsfMRIvoice

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Area of Science:

  • Neuroscience
  • Primatology
  • Evolutionary Biology

Background:

  • Vocalizations are crucial for primate social interaction and communication.
  • Human voice perception relies on a well-defined fronto-temporal network.
  • Understanding the evolutionary basis of this network is key to understanding language origins.

Purpose of the Study:

  • To investigate the neural basis of vocalization processing in a non-human primate model.
  • To compare the vocalization-processing network in marmosets to the human voice perception network.
  • To explore the evolutionary history of the human voice perception network.

Main Methods:

  • Whole-brain ultrahigh-field (9.4 T) functional magnetic resonance imaging (fMRI) was performed on awake marmosets (Callithrix jacchus).
  • The fMRI data were analyzed to identify brain regions activated by the presentation of conspecific vocalizations.

Main Results:

  • A fronto-temporal network, including subcortical regions, was activated by conspecific vocalizations in marmosets.
  • This network shows significant similarity to the human voice perception network.
  • The findings indicate a conserved neural architecture for vocalization processing across primate species.

Conclusions:

  • The marmoset brain possesses a homologous fronto-temporal network for processing vocalizations.
  • This suggests that the human voice perception network evolved from an ancestral vocalization-processing network.
  • This ancestral network likely predates the evolutionary split between New World and Old World primates.