Understanding Audiology: Masking and Audiograms
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Questions and Answers

What type of hearing loss is present in the right ear?

  • Conductive
  • Sensorineural (correct)
  • Mixed
  • None of the above

    • What is the configuration of the hearing loss in the right ear?

  • Reverse sloping
  • Sloping (correct)
  • Flat
  • Rising

    • What is the severity of the hearing loss in the right ear, at the highest frequency?

  • Severe
  • Mild
  • Moderate
  • Profound (correct)

    • The text mentions the possibility of a "transient" issue. What does this likely indicate?

    <p>A temporary hearing loss that may be easily treated (C)</p> Signup and view all the answers

    What is the typical threshold for a "profound" hearing loss?

    <p>90-100 dB (D)</p> Signup and view all the answers

    When might an audiologist choose to test an individual at 125 Hz?

    <p>To evaluate the presence of a dehiscence in the semicircular canal. (B)</p> Signup and view all the answers

    What does a difference of 10 dB or greater between air conduction and bone conduction thresholds signify?

    <p>Conductive hearing loss. (C)</p> Signup and view all the answers

    What is the standard frequency range for audiograms?

    <p>250 Hz to 8000 Hz. (A)</p> Signup and view all the answers

    What is the primary reason for testing frequencies above 8000 Hz (ultra-high frequencies)?

    <p>To evaluate the effects of ototoxicity and noise exposure. (B)</p> Signup and view all the answers

    What is the term used to describe the process of preventing sound from one ear from reaching the other ear during testing?

    <p>Masking. (C)</p> Signup and view all the answers

    What does the term "air-bone gap" refer to?

    <p>The difference in hearing thresholds between air conduction and bone conduction. (C)</p> Signup and view all the answers

    What type of hearing loss is primarily associated with damage to the inner ear?

    <p>Sensorineural hearing loss. (C)</p> Signup and view all the answers

    What is the primary function of bone conduction testing?

    <p>To determine the function of the inner ear. (C)</p> Signup and view all the answers

    What happens when the threshold in the better ear is raised to 60?

    <p>The threshold in the worse ear will be measured at 100. (B)</p> Signup and view all the answers

    What is 'masking' in the context of audiology?

    <p>Playing a sound louder than the threshold in the better ear to raise its threshold. (C)</p> Signup and view all the answers

    What happens when the input to the test ear, minus the intraoral attenuation, is below the threshold of the other ear?

    <p>The patient will not hear the sound in the other ear. (B)</p> Signup and view all the answers

    When does cross-hearing occur?

    <p>When the input to the test ear, minus the intraoral attenuation, is above the threshold of the other ear. (B)</p> Signup and view all the answers

    In what situations is masking always necessary?

    <p>When using bone conduction to test hearing. (B)</p> Signup and view all the answers

    What is the purpose of intraoral attenuation?

    <p>To measure the level of sound leakage from the test ear to the other ear. (D)</p> Signup and view all the answers

    What is the significance of knowing whether sound is above or below the threshold in the other ear?

    <p>It indicates whether cross-hearing is occurring. (D)</p> Signup and view all the answers

    Which of the following statements is true about masking?

    <p>Masking is an essential technique in audiology to isolate the test ear. (C)</p> Signup and view all the answers

    What occurs when sound is heard in the ear being tested and the opposite ear?

    <p>Crossover (C)</p> Signup and view all the answers

    What is the reason that cross hearing becomes an issue?

    <p>The sound is loud enough to be heard in the opposite cochlea. (A)</p> Signup and view all the answers

    Why does crossover always occur?

    <p>Because there is always some vibration that goes through the skull. (D)</p> Signup and view all the answers

    What is masking used for?

    <p>To prevent the sound from being heard in the opposite ear. (C)</p> Signup and view all the answers

    Why do audiologists prefer hand raises?

    <p>It helps to identify the ear the sound is being heard in. (D)</p> Signup and view all the answers

    When is cross hearing most likely to occur?

    <p>When the sound being tested is very loud. (D)</p> Signup and view all the answers

    If a patient is being tested on their right ear, and the patient reports only hearing the sound in their left ear, what is happening?

    <p>The sound may be perceived in the left ear because of crossover. (A)</p> Signup and view all the answers

    What is the intraoral attenuation?

    <p>The difference between the sound level at stimulus and at the opposite ear. (C)</p> Signup and view all the answers

    In the text, what does "vt" stand for?

    <p>Vibrotactile (C)</p> Signup and view all the answers

    What is the significance of the "20 dB rule" in the context of this text?

    <p>It dictates the minimum difference between hearing loss levels at two adjacent frequencies to be classified as a &quot;precipitous&quot; drop. (C)</p> Signup and view all the answers

    What does the "slope" of a hearing loss refer to?

    <p>The change in hearing loss levels across different frequencies. (A)</p> Signup and view all the answers

    Why might an audiologist write "vt?" on a hearing test report?

    <p>The patient reported feeling a vibration rather than hearing a sound. (B)</p> Signup and view all the answers

    Why might some audiologists not test bone conduction at 250 Hz?

    <p>The vibration of the bone oscillator is often felt at 250 Hz instead of being heard. (D)</p> Signup and view all the answers

    In what way does the text suggest a hearing loss can be described as "flat"?

    <p>When there is no difference in the hearing loss levels across all frequencies. (A)</p> Signup and view all the answers

    What is the main concern regarding performing air conduction testing at very high sound intensities?

    <p>The patient may experience discomfort or pain. (B)</p> Signup and view all the answers

    What is the main difference between a "slope" and a "precipitous drop" in hearing loss?

    <p>A precipitous drop involves a more rapid and significant decrease in hearing loss than a slope. (D)</p> Signup and view all the answers

    What is the defining characteristic of a 'sloping' audiogram?

    <p>'Sloping' audiograms are characterized by a 20dB decline in the audiogram. (B)</p> Signup and view all the answers

    Which of these configurations is NOT a common type of audiogram?

    <p>Left Corner (A)</p> Signup and view all the answers

    What is the defining characteristic of a 'cookie bite' audiogram?

    <p>A 'cookie bite' audiogram indicates a decrease in the high frequencies. (C)</p> Signup and view all the answers

    What is the difference between a 'cookie bite' audiogram and a 'reverse cookie bite' audiogram?

    <p>A 'cookie bite' audiogram indicates a decrease in the high frequencies, while a 'reverse cookie bite' audiogram indicates an increase in the low frequencies. (C)</p> Signup and view all the answers

    Which of these configurations is characterized by hearing loss in the high frequency range?

    <p>High frequency loss (B)</p> Signup and view all the answers

    Which of these is NOT a characteristic of a 'left corner' audiogram?

    <p>It is characterized by a minor increase in the high frequencies. (C)</p> Signup and view all the answers

    What is the defining characteristic of a 'flat' audiogram?

    <p>A 'flat' audiogram is characterized by no more than a 20dB difference between measurements on different sides of the audiogram. (A)</p> Signup and view all the answers

    According to the content, why is it important to describe what is ON the audiogram?

    <p>All of the above are important reasons to describe what is on the audiogram. (D)</p> Signup and view all the answers

    Study Notes

    Understanding Audiology: Masking and Audiograms

    • Audiology involves isolating the ear being tested, which is an important aspect of determining hearing loss.
    • Masking in clinical settings isn't covered in this class, focusing on understanding why and how masking is used when reading audiograms.
    • Competent reading of hearing tests and understanding results involves understanding masking.
    • This class focuses on the why, when, and how masked symbols are used versus unmasked symbols in audiograms.
    • Textbook chapters on masking are good but not completely covered in the class.
    • Students should understand the different types of hearing loss (e.g., slight, mild, moderate, severe, profound).
    • Students should understand the PTA (pure tone average) formula (averaged over 500, 1000, and 2000 Hz).
    • Students should be able to identify different hearing loss configurations (e.g. flat, sloping, rising, cookie bite).
    • Students should understand that an audiogram can help in determining the type, degree, and configuration of hearing loss.
    • Students should be able to describe the components typically associated with a hearing loss from the audiogram.

    Masking

    • Masking is needed when sounds can be heard in the opposite ear than the ear that is being tested.
    • Masking is used when sound crosses over from one ear to the other.
    • Masking involves presenting a sound to the ear that is not being tested to block the sound in the opposite ear.
    • An audiologist needs to consider masking if there's a significant difference in the hearing of one ear compared to the other.
    • Masking is important to isolate a specific ear's hearing if the sounds are leaking into the other ear.
    • Masking can be used to correctly measure and isolate the thresholds of an individual ear.

    Other Topics

    • Auditory thresholds for speech and pure tones range from 0 dBHL to approximately 120 dBHL.
    • The different configurations of hearing loss as seen on an audiogram can help in determining the type of hearing loss.
    • Different methods or techniques can be used to assess hearing abilities of patients.
    • The audiologist should be familiar with the different types of testing equipment (e.g., headphones, bone oscillator), and how these different instruments can elicit different results for hearing testing.

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    Understanding Audiology: Masking and Audiograms PDF

    Description

    This quiz explores the concepts of masking and audiograms within the field of audiology. It emphasizes the significance of masking in interpreting hearing tests, the types of hearing loss, and the pure tone average formula. Understand the essential symbols used in audiograms and be prepared to identify different hearing loss configurations.

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