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Related Concept Videos

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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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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Behavioral Determination of Stimulus Pair Discrimination of Auditory Acoustic and Electrical Stimuli Using a Classical Conditioning and Heart-rate Approach
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High-frequency thresholds: circumaural earphone versus insert earphone.

M Valente1, M Valente, J Goebel

  • 1Department of Communication Disorders, St. Louis University, Missouri 63110.

Journal of the American Academy of Audiology
|November 1, 1992
PubMed
Summary
This summary is machine-generated.

High-frequency audiometry reliability was assessed using two earphone types. Insert earphones (ER-2) required higher intensity for threshold measurement compared to supra-aural earphones (Koss HV/1A+), but both showed good test-retest reliability.

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Area of Science:

  • Audiology
  • Ototoxicity Monitoring
  • Hearing Science

Background:

  • High-frequency audiometry is crucial for monitoring hearing sensitivity in patients taking ototoxic medications.
  • Variability in high-frequency thresholds can arise from inconsistent earphone placement.
  • Insert earphones (ER-2) may enhance the reliability of high-frequency threshold measurements.

Purpose of the Study:

  • To evaluate the test-retest reliability of high-frequency thresholds using Koss HV/1A+ and ER-2 earphones.
  • To compare high-frequency thresholds obtained with Koss HV/1A+ versus ER-2 earphones.
  • To assess the impact of earphone type on the accuracy of hearing sensitivity monitoring.

Main Methods:

  • High-frequency hearing thresholds were measured in 40 ears of 20 normal-hearing adults.
  • Test-retest reliability was assessed for both Koss HV/1A+ and ER-2 earphones.
  • Thresholds obtained from the two earphone types were statistically compared.

Main Results:

  • No significant differences were found between test and retest thresholds for either earphone type.
  • Intrasubject threshold differences were generally within +/- 10 dB for both earphones.
  • Significantly higher intensity levels were required to determine thresholds using ER-2 insert earphones compared to Koss HV/1A+ supra-aural earphones across all tested frequencies.

Conclusions:

  • Both Koss HV/1A+ and ER-2 earphones demonstrate good test-retest reliability for high-frequency audiometry.
  • ER-2 insert earphones necessitate greater intensity for threshold determination than Koss HV/1A+ earphones.
  • Findings support the use of insert earphones for potentially improved reliability in high-frequency hearing assessments, despite the increased intensity requirement.