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Related Concept Videos

Perception of Sound Waves01:01

Perception of Sound Waves

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The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
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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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Sound Intensity Level00:53

Sound Intensity Level

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Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
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Related Experiment Video

Updated: Apr 18, 2026

Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
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Self reported hearing loss among elderly malaysians.

Ak Rosdina, M Leelavathi, A Zaitun

    Malaysian Family Physician : the Official Journal of the Academy of Family Physicians of Malaysia
    |January 22, 2015
    PubMed
    Summary

    A simple question effectively screened for hearing loss in primary care, revealing a high prevalence, particularly moderate hearing loss, in the elderly population.

    Keywords:
    ElderlyMalaysiahearing impairmenthearing loss

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    Area of Science:

    • Audiology
    • Primary Care Medicine
    • Geriatrics

    Background:

    • Hearing loss is a prevalent condition, especially in older adults.
    • Early detection is crucial for timely intervention and management.
    • Screening tools in primary care settings are needed to identify individuals with hearing impairment.

    Purpose of the Study:

    • To determine the prevalence of self-reported hearing loss in a primary care setting.
    • To compare the accuracy of a single-question screening for hearing loss against pure tone audiometry.
    • To evaluate the sensitivity and specificity of the self-report question at different hearing loss severity levels.

    Main Methods:

    • A cross-sectional study involving 111 patients at a primary care facility.
    • Self-reported hearing loss was assessed using a single question: "Do you have hearing loss?"
    • Pure tone audiometry was conducted to objectively measure hearing thresholds.

    Main Results:

    • The prevalence of hearing loss was 24.3% based on self-report and 36.9% based on pure tone audiometry.
    • At a 25 dBHL (decibels Hearing level) threshold, the single question showed 41.4% sensitivity and 85.0% specificity.
    • At a 40 dBHL threshold, sensitivity increased to 55.0% with 82.0% specificity.

    Conclusions:

    • Hearing loss is highly prevalent among the elderly population attending primary care.
    • A single-question self-report for hearing loss demonstrates satisfactory performance in identifying moderate hearing loss.
    • The findings support the utility of simple screening questions for hearing loss in primary care settings.