CoChat
Sign Up
Cited by 40Infant Health and DevelopmentInfant Development and Preterm CarePediatric Pain Management Techniques

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

Open access
Shinya, Yuta, Kawai, Masahiko, Niwa, Fusako, Myowa-Yamakoshi, Masako·2014·Biology Letters
DOI 10.1098/rsbl.2014.0350PMC PMC4155907
Open this paper in CoChat — free accountOpen PDF

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 ( F 0 ) 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 F 0 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 F 0 , although neither smaller body size at recording nor IUGR was related to increased F 0 in preterm infants. These findings suggest that the increased F 0 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.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1098/rsbl.2014.0350

Cites

14 of 14 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The accelerometer responds only to mechanical vibratory motions of the chest and is nearly completely unaffected by ambient noise.

    “The accelerometer, by contrast, responds only to mechanical vibratory motions of the chest, and is nearly completely unaffected by ambient noise42.”

    From Skin-interfaced biosensors for advanced wireless physiological monitoring in neonatal and pediatric intensive-care units (2020) · cites this paper as [42]

    The Methods section (‘Cry recording and acoustic analysis’; page unavailable) describes recording cries with a wave recorder and excluding recordings with environmental noise. Searches for an accelerometer, chest vibrations, and resistance to ambient noise found no passage addressing the cited claim. (LLM, conf=0.77)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Related

Authors
Shinya, Y., Kawai, M., Niwa, F., & Myowa-Yamakoshi, M.
Affiliations
  • Japan Society for the Promotion of Science (JP)
  • Kyoto University (JP)
  • Graduate School of Education, Kyoto University, Kyoto, Japan
ORCID
Venue
Biology Letters
Publisher
The Royal Society
Published
2014-08
Volume
10
Issue
8
ISSN
  • 1744-9561 (ISSN-L)
  • 1744-957X
DOI
10.1098/rsbl.2014.0350
PMC
PMC4155907
OpenAlex
W2150101053
Cited by
40
References
14
Citations by year
2026: 3 · 2025: 3 · 2024: 2 · 2022: 2 · 2021: 9 · 2020: 5 · 2019: 1 · 2018: 4 · 2017: 3 · 2016: 8
FWCI
8.57
Type
journal article
Language
en
Open access
Licence
Locations
  • Biology Letters (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Institutional Repositories DataBase (IRDB) (submittedVersion, cc-by)
  • Kyoto University Research Information Repository (Kyoto University) (submittedVersion, cc-by)
Funders
  • Japan Society for the Promotion of Science (24119005, 24300103, 24119001, 14J06302)
  • Japan Science and Technology Agency
  • Exploratory Research for Advanced Technology
Topics
  • Health Sciences › Health Professions › Pharmacy › Infant Health and Development
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Infant Development and Preterm Care
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Pediatric Pain Management Techniques
Keywords
preterm birth, infant crying, fundamental frequency, gestational age, fetal growth restriction, body size, term-equivalent age
MeSH terms
Anthropometry, Birth Weight, Crying, Female, Humans, Infant, Infant, Newborn, Infant, Premature, Infant, Small for Gestational Age, Male, Sound Spectrography, Voice, Infant Behavior, Body Size

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review