Effects of a Structured Maternal Voice Program on Premature Infant Responses and Maternal-Infant Attachment in the Neonatal Intensive Care Unit

"Pre-recorded maternal voice messages played via an MP3 player integrated into the infant's incubator. The recordings include recognition messages (I'm so glad to have you) and soothing messages (Rest well, little one, you're safe with me). The intervention is delivered three times daily for five minutes per session over a four-day period."