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Related Concept Videos

Sound Intensity Level00:53

Sound Intensity Level

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 hence a...
Hearing01:31

Hearing

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.
Perception of Sound Waves01:01

Perception of Sound Waves

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 frequency...
Visual Agnosia01:12

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
Applications of Logarithms01:28

Applications of Logarithms

Logarithmic functions are powerful tools for simplifying the mathematical representation of phenomena involving exponential changes. Their ability to convert multiplicative relationships into additive ones is especially valuable in various scientific and engineering contexts. One notable application of logarithms is measuring sound intensity, specifically through the decibel (dB) scale used in acoustics.Sound intensity levels vary over an extensive range, from the faintest audible whisper to...

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Related Experiment Video

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Modified Experimental Conditions for Noise-Induced Hearing Loss in Mice and Assessment of Hearing Function and Outer Hair Cell Damage
07:13

Modified Experimental Conditions for Noise-Induced Hearing Loss in Mice and Assessment of Hearing Function and Outer Hair Cell Damage

Published on: February 10, 2023

Visual analog scale in hearing loss.

Samril Bokari1, N Prepageran, R Raman

  • 1Department of ENT, University Malaya Medical Centre, 59100 Kuala Lumpur, Malaysia.

Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India
|November 3, 2012
PubMed
Summary
This summary is machine-generated.

The visual analog scale (VAS) shows potential for assessing mild to moderate hearing loss, particularly conductive types. It may serve as a screening tool in areas lacking audiometry equipment.

Keywords:
Hearing lossVisual analog scale

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Area of Science:

  • Audiology
  • Psychophysics

Background:

  • The visual analog scale (VAS) is widely used for quantifying subjective experiences like pain and mood.
  • Its applicability to objective measures, such as hearing loss, requires investigation.

Purpose of the Study:

  • To evaluate the utility of the visual analog scale (VAS) in measuring the severity of hearing loss.
  • To compare VAS results with pure tone audiometry (PTA) findings in patients with unilateral hearing loss.

Main Methods:

  • One hundred sixty patients (aged 12-80) with unilateral hearing loss underwent VAS assessment (1-10) and pure tone audiometry (PTA) at 500, 1000, and 2000 Hz.
  • Correlation analysis was performed between VAS scores and PTA results to determine the scale's effectiveness.

Main Results:

  • A good correlation was observed between VAS scores and PTA for mild and moderate hearing loss.
  • Correlation was poor for severe and profound hearing loss.
  • The best correlation between VAS and PTA was found in patients with conductive hearing loss.

Conclusions:

  • The VAS may be a valuable tool for assessing mild to moderate hearing loss, especially conductive types.
  • It could function as a preliminary screening method in resource-limited settings.
  • VAS can potentially supplement traditional audiometric assessments for hearing loss evaluation.