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Title: Preterm birth is associated with an increased fundamental frequency of spontaneous crying in human infants at term-equivalent age.
Authors: Shinya, Yuta
Kawai, Masahiko  kyouindb  KAKEN_id
Niwa, Fusako  kyouindb  KAKEN_id
Myowa-Yamakoshi, Masako
Author's alias: 新屋, 裕太
河井, 昌彦
丹羽, 房子
明和, 政子
Keywords: preterm infants
spontaneous cry
fundamental frequency
low-birth-weight infants
Issue Date: Aug-2014
Publisher: The Royal Society
Journal title: Biology letters
Volume: 10
Issue: 8
Abstract: Human infant crying has been researched as a non-invasive tool for assessing neurophysiological states at an early developmental stage. Little is known about the acoustic features of spontaneous cries in preterm infants, although their pain-induced cries are at a higher fundamental frequency (F0) before term-equivalent age. In this study, we investigated the effects of gestational age, body size at recording and intrauterine growth retardation (IUGR) on the F0 of spontaneous cries in healthy preterm and full-term infants at term-equivalent age. We found that shorter gestational age was significantly associated with higher F0, although neither smaller body size at recording nor IUGR was related to increased F0 in preterm infants. These findings suggest that the increased F0 of spontaneous cries is not caused by their smaller body size, but instead might be caused by more complicated neurophysiological states owing to their different intrauterine and extrauterine experiences.
Description: 早産児の泣きが伝えること -早期からの発達評価・支援に向けた取り組み-. 京都大学プレスリリース. 2014-08-21.
Rights: © 2014 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License, which permits unrestricted use, provided the original author and source are credited.
DOI(Published Version): 10.1098/rsbl.2014.0350
PubMed ID: 25122740
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