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Related Concept Videos

Higher Mental Functions of the Brain: Language01:10

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Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
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Related Experiment Video

Updated: Sep 24, 2025

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

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Cortical basis for skilled vocalization.

Christina M Cerkevich1,2,3, Jean-Alban Rathelot4, Peter L Strick1,2,3

  • 1Neurobiology Department, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261.

Proceedings of the National Academy of Sciences of the United States of America
|May 4, 2022
PubMed
Summary
This summary is machine-generated.

Marmosets possess advanced vocal abilities due to enhanced brain pathways. Specifically, greater output from premotor areas like the supplementary motor area (SMA) to laryngeal muscles likely explains their superior vocal control compared to macaques.

Keywords:
cerebral cortexlaryngeal musclepremotor areasspeech

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Area of Science:

  • Neuroscience
  • Comparative Anatomy
  • Primate Vocalization

Background:

  • Marmosets exhibit sophisticated vocal motor skills, unlike macaques.
  • Understanding the neural basis of vocal control differences is crucial.

Purpose of the Study:

  • To investigate the cortical control of laryngeal muscles in marmosets and macaques.
  • To identify neural differences underlying distinct vocal abilities.

Main Methods:

  • Examined the cortical projections to laryngeal motoneurons in both species.
  • Compared the contribution of premotor areas and primary motor cortex (M1).

Main Results:

  • Both species receive disynaptic input to laryngeal motoneurons from M1 and premotor areas.
  • Marmosets show substantially larger descending output from ventral area 6 (area 6V) and SMA.
  • These premotor areas are key sources of vocal motor control.

Conclusions:

  • Enhanced vocal motor skills in marmosets may stem from expanded output from specific premotor cortical areas.
  • Differences in premotor cortex expansion correlate with vocalization capabilities.