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Interaural Asymmetry, Not Hearing Thresholds, Predicts Diotic Frequency Modulation Sensitivity in Children With
Srikanta K Mishra1, Anu Nair1, Udit Saxena2
1Department of Speech, Language and Hearing Sciences, The University of Texas at Austin, Austin, Texas, USA.
Ear and Hearing
|May 20, 2026
Summary
Children with asymmetric minimal-to-mild hearing loss show reduced frequency modulation sensitivity. Early identification and intervention are crucial for auditory development and perception.
Area of Science:
- Auditory Neuroscience
- Developmental Psychology
- Speech and Hearing Sciences
Background:
- Childhood sensory deprivation can impair auditory processing and development.
- Effects of minimal-to-mild sensorineural hearing loss on auditory skills are not well understood.
- Animal models indicate developmental auditory deprivation negatively impacts perceptual skills.
Purpose of the Study:
- To investigate the impact of minimal-to-mild sensorineural hearing loss on temporal processing in children.
- To assess sensitivity to amplitude and frequency modulation in children with varying degrees of hearing loss.
Main Methods:
- Case-control study involving 121 children aged 4-12 years.
- Psychoacoustic tasks using a three-alternative forced-choice adaptive procedure.
- Measured amplitude modulation detection (20 Hz) and frequency modulation detection (2 and 20 Hz).
Main Results:
- Children with minimal-to-mild hearing loss did not show deficits in amplitude or frequency modulation sensitivity.
- Interaural asymmetry in hearing sensitivity was linked to decreased frequency modulation sensitivity.
Conclusions:
- Asymmetric hearing loss, even within the minimal-to-mild range, adversely affects auditory perception.
- Early detection and intervention are vital, as minimal childhood hearing loss can subtly disrupt auditory development.
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