04/06/2026
By 40 weeks gestation, infants demonstrate auditory discrimination with clear voice preferences:
mother’s voice first, followed by other female voices, and then children’s voices.
This reflects early brain organization and recognition patterns that support bonding and postnatal regulation. The foundation for connection begins in utero—and that connection becomes even more important after birth.
For infants with NOWS, who often experience physiologic stress, dysregulation, and difficulty with soothing and feeding, familiar voices are not just comforting—they are regulating. A mother’s voice can help stabilize the nervous system, support feeding organization, and reduce stress responses.