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Related Concept Videos

The Cochlea01:13

The Cochlea

50.0K
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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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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Related Experiment Video

Updated: Dec 31, 2025

Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
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Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss

Published on: January 25, 2016

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Diagnostics of retrocochlear hearing loss.

Jan Rottenberg, Břetislav Gál

    Casopis Lekaru Ceskych
    |January 15, 2020
    PubMed
    Summary

    Diagnosing retrocochlear lesions is crucial in otolaryngology. This study compares audiological diagnosis using auditory brainstem response (ABR) and MRI for detecting cerebellopontine angle (CPA) tumors, discussing sensitivity and cost-effectiveness.

    Area of Science:

    • Otolaryngology
    • Neurology
    • Radiology

    Background:

    • Retrocochlear lesion diagnosis is common in otolaryngology.
    • Omission of diagnosis can lead to severe patient consequences.
    • Established clinical guidelines and diagnostic protocols are essential.

    Purpose of the Study:

    • To evaluate diagnostic methods for retrocochlear lesions.
    • To compare the sensitivity and cost-effectiveness of two diagnostic approaches for cerebellopontine angle (CPA) tumors.

    Main Methods:

    • Method 1: Audiological diagnosis with Auditory Brainstem Response (ABR) as the primary tool, followed by MRI for suspected tumors.
    • Method 2: Magnetic Resonance Imaging (MRI) for all patients with clinical suspicion of a CPA tumor.
    • Discussion of sensitivity and cost-effectiveness for both methods.
    Keywords:
    CPA tumoursretrocochlear hearing loss

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    Main Results:

    • Sensitivity of audiological diagnosis with ABR followed by MRI versus MRI alone for CPA tumors was analyzed.
    • Cost-effectiveness of each diagnostic strategy was evaluated.
    • The study discusses the trade-offs between the two approaches.

    Conclusions:

    • Proper diagnostic protocols are key for managing retrocochlear lesions.
    • Both ABR-guided MRI and direct MRI have roles in CPA tumor detection.
    • The choice of diagnostic method depends on balancing sensitivity and cost-effectiveness.