Repeated Parental Singing During Kangaroo Care Improved Neural Processing of Speech Sound Changes in Preterm Infants at Term Age

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Kostilainen , K , Partanen , E , Mikkola , K , Wikström , V , Pakarinen , S , Fellman , V & Huotilainen , M 2021 , ' Repeated Parental Singing During Kangaroo Care Improved Neural Processing of Speech Sound Changes in Preterm Infants at Term Age ' , Frontiers in Neuroscience , vol. 15 , 686027 .

Title: Repeated Parental Singing During Kangaroo Care Improved Neural Processing of Speech Sound Changes in Preterm Infants at Term Age
Author: Kostilainen, Kaisamari; Partanen, Eino; Mikkola, Kaija; Wikström, Valtteri; Pakarinen, Satu; Fellman, Vineta; Huotilainen, Minna
Contributor organization: Brain, Music and Learning
Department of Psychology and Logopedics
Language Acquisition, Representation, and Processing (L.A.R.P.)
Cognitive Brain Research Unit
HUS Children and Adolescents
Children's Hospital
Department of Education
Faculty of Medicine
Mind and Matter
Behavioural Sciences
CICERO Learning
Date: 2021-09-03
Language: eng
Number of pages: 15
Belongs to series: Frontiers in Neuroscience
ISSN: 1662-453X
Abstract: Preterm birth carries a risk for adverse neurodevelopment. Cognitive dysfunctions, such as language disorders may manifest as atypical sound discrimination already in early infancy. As infant-directed singing has been shown to enhance language acquisition in infants, we examined whether parental singing during skin-to-skin care (kangaroo care) improves speech sound discrimination in preterm infants. Forty-five preterm infants born between 26 and 33 gestational weeks (GW) and their parents participated in this cluster-randomized controlled trial ( ID IRB00003181SK). In both groups, parents conducted kangaroo care during 33-40 GW. In the singing intervention group (n = 24), a certified music therapist guided parents to sing or hum during daily kangaroo care. In the control group (n = 21), parents conducted standard kangaroo care and were not instructed to use their voices. Parents in both groups reported the duration of daily intervention. Auditory event-related potentials were recorded with electroencephalogram at term age using a multi-feature paradigm consisting of phonetic and emotional speech sound changes and a one-deviant oddball paradigm with pure tones. In the multi-feature paradigm, prominent mismatch responses (MMR) were elicited to the emotional sounds and many of the phonetic deviants in the singing intervention group and in the control group to some of the emotional and phonetic deviants. A group difference was found as the MMRs were larger in the singing intervention group, mainly due to larger MMRs being elicited to the emotional sounds, especially in females. The overall duration of the singing intervention (range 15-63 days) was positively associated with the MMR amplitudes for both phonetic and emotional stimuli in both sexes, unlike the daily singing time (range 8-120 min/day). In the oddball paradigm, MMRs for the non-speech sounds were elicited in both groups and no group differences nor connections between the singing time and the response amplitudes were found. These results imply that repeated parental singing during kangaroo care improved auditory discrimination of phonetic and emotional speech sounds in preterm infants at term age. Regular singing routines can be recommended for parents to promote the development of the auditory system and auditory processing of speech sounds in preterm infants.
Subject: auditory event-related potential
auditory processing
infant-directed singing
mismatch response
preterm birth
sound discrimination
515 Psychology
6162 Cognitive science
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

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