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Related Concept Videos

Hearing01:31

Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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Auditory Pathway01:15

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Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
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The Cochlea01:13

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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.
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Related Experiment Video

Updated: May 16, 2025

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

Published on: March 24, 2023

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Auditory modulation processing in children with mild to moderate hearing loss.

Ferdous Rasouli1, Parisa Jalilzadeh Afshari1, Enayatollah Bakhshi2

  • 1Department of Audiology, School of Rehabilitation, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.

International Journal of Pediatric Otorhinolaryngology
|April 3, 2025
PubMed
Summary

Children with mild to moderate hearing loss struggle with speech in noise due to difficulties processing auditory modulations. Nonverbal tests can help assess these challenges and guide auditory rehabilitation.

Keywords:
Amplitude modulationChildrenHearing lossSpectral modulationSpeech perception in noiseTemporal processing

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Area of Science:

  • Auditory Neuroscience
  • Speech Perception
  • Pediatric Audiology

Background:

  • Children with hearing loss face significant challenges in understanding speech, particularly in noisy environments like classrooms.
  • Effective speech comprehension relies on the ability to detect and discriminate spectro-temporal auditory information.
  • Investigating these auditory processing skills is crucial for addressing educational and communication difficulties in children with hearing impairment.

Purpose of the Study:

  • To compare the processing of auditory spectro-temporal modulations in children with mild to moderate hearing loss (MMHL) versus normally hearing (NH) children.
  • To examine the relationship between auditory modulation processing and speech perception in noise for these groups.
  • To evaluate the potential of nonverbal auditory tests in assessing perceptual difficulties in children with hearing loss.

Main Methods:

  • A cross-sectional study involving 31 children with mild to moderate sensorineural hearing loss (SNHL) and 34 normally hearing children (ages 8-12).
  • Participants completed the Spectral Modulation Ripple Test (SMRT), Amplitude Modulation Detection Tests (AMDTs) at various frequencies, and Speech Perception in Noise (SPiN) tests (Word-in-Noise and BKB-SIN).
  • Performance was compared between groups, and correlations between tests were analyzed, including comparisons between ears.

Main Results:

  • Children with MMHL performed significantly worse than NH children on SMRT, AMDTs, and SPiN tests.
  • No significant differences in performance were found between mild and moderate hearing loss categories.
  • While SMRT and AMDTs did not correlate with the Word-in-Noise test, significant correlations were observed between SMRT and BKB-SIN, and between higher-rate AMDTs and BKB-SIN results in both groups.

Conclusions:

  • Children with mild to moderate SNHL exhibit reduced ability to utilize spectral and temporal modulation cues, impacting their speech understanding in noise.
  • Nonverbal spectral and temporal modulation tests are valuable tools for evaluating perceptual disorders in children with hearing loss.
  • These tests require minimal cognitive load and can aid in the development of auditory rehabilitation strategies.