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Related Experiment Video

Updated: Sep 3, 2025

Clinical Practice Protocol of Creative Music Therapy for Preterm Infants and Their Parents in the Neonatal Intensive Care Unit

Clinical Practice Protocol of Creative Music Therapy for Preterm Infants and Their Parents in the Neonatal Intensive Care Unit

Published on: January 7, 2020

Prenatal development of neonatal vocalizations.

Darshana Z Narayanan^1,2, Daniel Y Takahashi^1,2, Lauren M Kelly^1,2

¹Princeton Neuroscience Institute, Princeton University, Princeton, United States.

|July 26, 2022

Summary

Prenatal development of vocalizations in marmoset monkeys was studied. Orofacial movements for infant contact calls emerge before birth, indicating prenatal sensorimotor development for vocalizing.

Keywords:

callithrix jacchus fetal action marmoset neuroscience vocal development

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Last Updated: Sep 3, 2025

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Area of Science:

Developmental biology
Neuroscience
Primate vocalization

Background:

Newborn primates produce vocalizations crucial for caregiver attention.
The prenatal development of these vocalizations and their underlying orofacial movements is largely unknown.
Orofacial movements possess unique spatiotemporal characteristics that may allow tracking during fetal development.

Purpose of the Study:

To investigate the prenatal emergence of orofacial movements associated with vocalizations in fetal marmoset monkeys.
To determine if specific vocalization patterns, like infant contact calls, can be identified prenatally.
To explore the sensorimotor development related to vocal production during fetal life.

Main Methods:

Utilized dense, longitudinal ultrasound imaging to record fetal head and orofacial movements in marmoset monkeys.
Analyzed the spatiotemporal dynamics of these movements to identify distinct patterns.
Correlated observed orofacial movement patterns with known vocalization characteristics.

Main Results:

Orofacial movements essential for vocalizations were observed to differentiate from broader head movements in fetuses.
Distinct orofacial movement patterns, characteristic of marmoset infant contact calls, were identified during the prenatal period.
These findings suggest that key sensorimotor components for vocalization develop before birth.

Conclusions:

Aspects of sensorimotor development necessary for producing vocalizations occur prenatally.
The study provides evidence for the prenatal emergence of specific orofacial movement patterns linked to primate vocalizations.
This research opens new avenues for studying the early development of communication in primates.