Evoked Potential

Auditory Neuropathy Spectrum Disorder: Misdiagnosis

​Case History

Audiological/Vestibular Tests

Diagnosis/Treatment

Discussion

Clinical Take Home Points
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List All References


From Auditory Electrophysiology page 3
  • The cochlear microphonic (CM) can be though of as a steady-state potential if recorded very near the cochlea, or it can be revealed in some cases of auditory neuropathy spectrum disorder, in which case the CM appears to "ring" even in response to a click stimulus
From Auditory Electrophysiology page 29
​ABR
  • Marking of primary waves I, III, V although other waves may be marked such as II and IV
  • Marking wave V only and tracking its presence to decreasing intensity levels
  • Looking for signs of ringing cochlear microphonic in an absent or grossly malformed ABR waveform
    • as is in the case of auditory neuropathy spectrum disorder (ANSD)

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