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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

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Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
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[Hearing loss associated with GJB2 gene mutation].

Qingjia Cui, Lihui Huang

    Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Journal of Clinical Otorhinolaryngology Head and Neck Surgery
    |January 15, 2014
    PubMed
    Summary

    Heredity is a major cause of hearing loss (HL), with nonsyndromic hearing loss (NSHL) being a significant factor. Mutations in the GJB2 gene are the primary genetic cause of NSHL, crucial for diagnosis and counseling.

    Area of Science:

    • Genetics
    • Audiology
    • Molecular Biology

    Background:

    • Hearing loss (HL) encompasses various degrees of auditory impairment.
    • Heredity is a primary etiological factor in HL.
    • Nonsyndromic hearing loss (NSHL) constitutes 80% of hereditary deafness cases.

    Purpose of the Study:

    • To review studies on the association between GJB2 gene mutations and hearing loss.
    • To provide a reference for genetic diagnosis and counseling related to GJB2 mutations.

    Main Methods:

    • Literature review of studies investigating GJB2 gene mutations and hearing loss.
    • Analysis of the prevalence and impact of GJB2 mutations in NSHL.

    Main Results:

    • Over 140 genes are linked to NSHL.

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  • GJB2 gene mutations are responsible for 80% of NSHL cases.
  • GJB2 mutations account for over 50% of childhood NSHL, highlighting its critical role.

    • Conclusions:

    • GJB2 gene mutations are the most significant genetic factor in nonsyndromic hearing loss.
    • Understanding GJB2 mutations is essential for accurate genetic diagnosis and counseling in deafness.