Case 15 Reflex Thresholds and Decay – Left

The clinician did not present reflex-eliciting stimuli below 90 dB HL.

  • Is there any time when the finding of a reflex threshold lower than 90 vs “present at 90 dB HL” would alter a clinical decision?
  • Note that the broad-band noise reflex was elicited even at 80 and 85 dB HL.  What is the significance of this low reflex threshold?
  • Complete the reflex tables at the bottom of the page.
  • Describe the reflex decay findings.

LEFT IPSI 500 Hz 1000 Hz 2000 Hz 4000 Hz
Left Hearing Threshold (dB SL) 20 45 75 85
Reflex Threshold (dB HL)
Reflex Sensation Level
Disproportionately high?

LEFT CONTRA 500 Hz 1000 Hz 2000 Hz 4000 Hz
Left Hearing Threshold (dB SL) 20 45 75 85
Reflex Threshold (dB HL)
Reflex Sensation Level
Disproportionately high?