Tympanic electrocochleography: Normal and abnormal patterns of response

Robert H. Margolis, Samuel C. Levine, Eric M. Foamier, Lisa L. Hunter, Sharon L. Smith, David J. Lilly

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Electrocochleography has been widely used in human and animal studies of endolymphatic hydrops. A variety of response patterns have been reported in normal and hydropic ears. Recent clinical studies have focused almost exclusively on the amplitude ratio of the summating potential (SP) and action potential (AP) derived from alternating polarity click responses. In this report normal response patterns are described with a tympanic membrane electrode employing condensation, rarefaction and alternating polarity clicks and tone burst stimulation. A variety of response abnormalities are described in patients with suspected endolymphatic hydrops. The exclusive use of alternating polarity clicks is not adequate to reveal the nature of these abnormalities.

Original languageEnglish (US)
Pages (from-to)8-24
Number of pages17
JournalInternational Journal of Audiology
Issue number1
StatePublished - 1992
Externally publishedYes


  • Auditory-evoked potentials
  • Electrocochleography
  • Endolymphatic hydrops
  • Hearing loss
  • Menière's disease


Dive into the research topics of 'Tympanic electrocochleography: Normal and abnormal patterns of response'. Together they form a unique fingerprint.

Cite this