Vol 10: Preterm birth is associated with an increased fundamental frequency of spontaneous crying in human infants at term-equivalent age.Report as inadecuate



 Vol 10: Preterm birth is associated with an increased fundamental frequency of spontaneous crying in human infants at term-equivalent age.


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This article is from Biology Letters, volume 10.AbstractHuman 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.



Author: Shinya, Yuta; Kawai, Masahiko; Niwa, Fusako; Myowa-Yamakoshi, Masako

Source: https://archive.org/



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