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

NCT03716882 | Completed

• 2 other identifiers: 18CH0852018-A01399-46
• Study Type: observational
• Target: 25
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Infants

Keywords

Infants; Principal Component 1 (PC1); Principal Component 2 (PC2); Song Meter 4; Acoustic structures crying; PRAAT software

Outcome Measures

Primary Outcomes (1)

• Acoustic structures crying of parameters Principal Component 1 (PC1) and Principal Component 2 (PC2)

  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.

Secondary Outcomes (1)

• Questionnaire of cry in infant

  up to 3 and half months.

Study Arms (1)

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.

Device: Song Meter (SM)4

Interventions

Song Meter (SM)4 DEVICE

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.

Also known as: automatic record device

Infant at the birth

Eligibility Criteria

• Age: 1 Day - 10 Weeks
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17)
• Sampling Method: Non-Probability Sample

Study Population

Infants at the birth

You may qualify if:

• 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

You may not qualify if:

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

Sponsors & Collaborators

• Centre Hospitalier Universitaire de Saint Etienne: lead
• ENES, CNRS 9197: collaborator

Study Sites (1)

Chu Saint-Etienne

Saint-Etienne, France

Location

Study Officials

• Nicolas MATHEVON, PhD

  Université Jean MONNET, Saint-Etienne, France

  STUDY CHAIR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: October 22, 2018
• First Posted: October 23, 2018
• Study Start: October 16, 2018
• Primary Completion: January 6, 2020
• Study Completion: January 6, 2020
• Last Updated: February 1, 2021

Record last verified: 2021-01

Data Sharing

• IPD Sharing: Will not share

Locations

FR (1)