Related Experiment Video

Updated: Aug 1, 2026

Infant Auditory Processing and Event-related Brain Oscillations
06:34

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Developmental changes in static admittance and tympanometric width in infants and toddlers

J Roush1, K Bryant, M Mundy

  • 1Division of Speech and Hearing Sciences, University of North Carolina School of Medicine, Chapel Hill, USA.

Journal of the American Academy of Audiology
|July 1, 1995
PubMed

Insights

This study found that acoustic admittance measures in young African-American children change with age. Younger children had lower static admittance and wider tympanograms, highlighting the need for age-specific norms in pediatric audiology.

Area of Science:

  • Audiology
  • Pediatric Otolaryngology
  • Speech and Hearing Sciences

Background:

  • Middle ear status in children is crucial for auditory development.
  • Acoustic admittance measures provide objective data on middle ear function.
  • Establishing normative data is essential for accurate clinical interpretation.

Purpose of the Study:

  • To longitudinally assess acoustic admittance and tympanometric width in infants and toddlers.
  • To investigate age-related changes in middle ear function in a specific pediatric population.
  • To determine the necessity of age- and population-specific norms for acoustic measures.

Main Methods:

  • Longitudinal study design over a 24-month period.
  • Over 1600 acoustic admittance assessments performed.
  • Subjects included 88 African-American children aged 6 to 30 months in full-time daycare.

Main Results:

  • Significant age effects were observed in acoustic admittance measures.
  • Younger children (6-30 months) exhibited lower static acoustic admittance.
  • Younger children also displayed wider tympanometric width.
  • Results indicate developmental trends in middle ear characteristics.

Conclusions:

  • Age-specific norms are critical for interpreting acoustic admittance in children.
  • Population-specific data is important for accurate middle ear evaluations.
  • Findings emphasize the dynamic nature of pediatric middle ear function.

More Related Videos

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses14:05

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses

Published on: January 23, 2017

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages06:04

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

Related Concept Videos

The Cochlea01:13

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
Anatomy of the Ear01:16

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...