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Acoustic Structures Crying of Infants From 1 to 4 Months and Their Signification (LongCRY)

Crying is a survival mechanism for babies and their almost exclusive means of expression until the age of 4 months. Babies 'cry is mostly related to pain, a feeling of hunger, discomfort or separation following the departure of a parent around. Crying is a complex but essential means of communication and information between a baby and his parents that raises the question of their meaning.

The cry phenomenon consists of complex acoustic signals produced by the vocal cords and filtered by the vocal tract. The vibrations frequency determines the fundamental frequency, itself responsible for the perception of the cry tone (pitch). The frequency spectrum of a cry is modified during the passage through the upper airways forming broad bands called "resonance frequency" or "formants".

From the specificity of a crying sequence, it is possible to extract dynamic information and relate it to the perception that the adult has of it. Thus dynamic crying is often perceived by the adult as an imminent need of the baby.

Some studies have shown that a child's crying may change according to his degree of discomfort, suggesting that crying was a "graduated signal" whose frequency and timbre could vary along a continuum. These changes would explain why adult listeners would be able to dissociate crying babies of different intensities.

Conversely, an inappropriate response to crying could gradually generate disorders of the relationship between the baby and the parent.

However, despite their potential neuro-ethological interest, knowledge of information transmitted by babies's cry remains superficial. This could be related to the relatively obsolete techniques of recording or due to the lack of objective physiological data on babies 'cry. Finally, the perception and reactions of adults when they hear crying babies are not fully understood.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The objective of this study is to evaluate acoustic structures crying of infants from 1 to 4 months for to study individual acoustic signature.

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

25

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

      • Saint-Étienne, Frankrig
        • Chu Saint-Etienne

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

1 dag til 2 måneder (Barn)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Infants at the birth

Beskrivelse

Inclusion Criteria:

  • any safe term infants (> 37SA)
  • eutrophic and in good health
  • infants sleeping in bed with bars without baby nest
  • form signed by the holder of parental authority.
  • Parents affiliated to a social security scheme
  • Parents who to live in cities of Saint-Etienne, Villars, Saint Priest-en-Jarez, Etrat and Saint Jean-Bonnefonds, France

Exclusion Criteria:

  • inter-uterine growth restriction
  • antenatal neurological pathologies or at birth
  • perinatal asphyxial encephalopathy
  • antenatal pathologies (e.g. trisomy 21, hydrocephalus...)
  • multiple pregnancy

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: Kohorte
  • Tidsperspektiver: Fremadrettet

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Infant at the birth

Infant at the birth will be included. Their cries will be longitudinally registered using an automatic record device: Song Meter (SM)4 during 3 consecutive days and nights.

At every cry, parent should answer the questionnaire of cry in infant.

Their cries will be longitudinally registered using an automatic record device: Song Meter (SM)4 during 3 consecutive days and nights. This record will take place at 15 days of life, 1 and half months, 2 and half months and 3 and half months.
Andre navne:
  • automatic record device

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Acoustic structures crying of parameters Principal Component 1 (PC1) and Principal Component 2 (PC2)
Tidsramme: up to 3 and half months.
Comparison of acoustic structures crying of parameters Principal Component 1 (PC1) and Principal Component 2 (PC2) with PRAAT software.
up to 3 and half months.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Questionnaire of cry in infant
Tidsramme: up to 3 and half months.
At every cry, parent should answer at the questionnaire of cry in infant: context of the crying (situation), how he interpreted it (pain, hunger, discomfort, etc.), actions he undertook to calm the crying (reassurance, lift, change, breastfeeding), and if those they have been effective in comforting the baby.
up to 3 and half months.

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Samarbejdspartnere

Efterforskere

  • Studiestol: Nicolas MATHEVON, PhD, Université Jean MONNET, Saint-Etienne, France

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

16. oktober 2018

Primær færdiggørelse (Faktiske)

6. januar 2020

Studieafslutning (Faktiske)

6. januar 2020

Datoer for studieregistrering

Først indsendt

22. oktober 2018

Først indsendt, der opfyldte QC-kriterier

22. oktober 2018

Først opslået (Faktiske)

23. oktober 2018

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

1. februar 2021

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

29. januar 2021

Sidst verificeret

1. januar 2021

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 18CH085
  • 2018-A01399-46 (Anden identifikator: ANSM)

Plan for individuelle deltagerdata (IPD)

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Ingen

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

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