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The Cochlea

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.

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Related Experiment Video

Updated: Jul 15, 2026

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

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

Unilateral pseudohypacusis in children.

Jatinder Mohan Chawla¹, K K Handa, B M Tripathi

¹Department of Psychiatry and National Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi, India.

Indian Journal of Pediatrics

|April 3, 2007

Summary

Pseudohypacusis, or hearing loss without a physical cause, can present unilaterally, especially in children. This case report highlights psychological factors and audiometric discrepancies in managing this condition.

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Area of Science:

Audiology
Pediatric Psychology
Otolaryngology

Background:

Pseudohypacusis is characterized by hearing loss without an organic etiology.
Literature on pseudohypacusis is predominantly in the form of case reports.
Unilateral pseudohypacusis is a notable subtype, particularly in pediatric cases.

Observation:

This condition is often suspected due to discrepancies identified during audiometric testing.
Psychological factors frequently underlie the occurrence of pseudohypacusis in children.
The case involves a child presenting with unilateral pseudohypacusis and associated psychological stressors.

Findings:

The study reports a case of unilateral pseudohypacusis in a child.
Psychological stressors were identified as contributing factors.
Discrepancies in audiometric testing were key to diagnosis.

Implications:

This case underscores the importance of considering psychological factors in pediatric hearing loss evaluations.
It highlights the diagnostic challenges posed by pseudohypacusis.
The report provides insights into the management strategies for unilateral pseudohypacusis in children.