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17 Multiple choice questions

  1. -Most people with normal hearing will not be able to hear a 1 dB difference, can tell about 7 times, but not all 20

    -If they have recruitment, they will be able to respond to more than 7 and they have a cochlear/sensory loss b/c they have a small distance b/w being able to hear it and it being too loud
  2. -If they sound goes in and the OAEs come back out = IHCs are damaged

    -If the sound goes in and NO OAEs come back = OHCs are damaged - Suggesting Cochlear/Sensory loss and they have recruitment
  3. ...
  4. -Tell me when you barely hear it, clearly hear it, it's loud, it's almost uncomfortable, it's painfully loud

    -May not do all the middle ones, unless we are doing a hearing aid
  5. 1. Compare to ear that has a hearing loss

    2. Complete recruitment = when the bad ears hears the same as the good ear - It has to get smaller and smaller units to match the loudness perception
  6. Look for the length of the dynamic range
  7. Caused by the loss of OHC
  8. - Put 2 sounds in and you measure if a third sound comes out

    -Typically screen with DP, to look at specific frequencies
  9. Normal hearing: Barely hear it = 0 dB & Painful = 100-110 dB

    -W/ Recruitment - Must go from barely hearing it to painfully loud within a very small dynamic range (40 dB range)
  10. Use if they have one normal ear and one bad ear, to look for recruitment
  11. That it will take a while before they can hear it, but they will hear it b/c they will have recruitment
  12. 1. Plays and ongoing sound at a specific loudness, start at about 10 dB above

    2. Increases by 1 dB 20 times, if they raise their hand saying they heard the difference they heard the difference
  13. -Looks at the OHC movement

    -We can measure the outer hair cell function (assuming they have a normal tympanogram)
  14. -UCL: speech

    -LDL: tone

    -60 dB or below, dynamic range is small between quiet and loudest sound.
  15. -Do we have that smaller dynamic range

    -They may have a reduced dynamic range b/w where they can finally hear and where it becomes painfully loud
  16. Put click that stimulate the cochlea at the whole time and measures what comes out
  17. Determines if the patients is able to notice a 1 dB increment change (JND)