Recovery of the human compound action potential following prior stimulation

Owen D. Murnane, Beth A Prieve, Evan M. Relkin

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The recovery from prior stimulation of the compound action potential (CAP) was measured using a forward masking stimulus paradigm in four normal- hearing, human subjects. The CAP was recorded using a wick electrode placed on the tympanic membrane. The effects of a 4000-Hz, 97-dB SPL conditioning stimulus on CAP amplitude in response to a 4000-Hz probe were measured as a function of conditioner-probe interval for three probe levels. The normalized probe response amplitude was completely recovered to the control values at an average conditioner-probe interval of 1359 ms, similar to that observed in chinchilla (Relkin, E.M., Doucet, J.R., Sterns, A., 1995. Recovery of the compound action potential following prior stimulation: evidence for a slow component that reflects recovery of low spontaneous-rate auditory neurons, Hear. Res. 83, 183-189). The present results are interpreted as a consequence of the slow recovery of low spontaneous-rate (SR), high threshold neurons from prior stimulation (Relkin, E.M., Doucet, J.R., 1991. Recovery from prior stimulation. I: Relationship to spontaneous firing rates of primary auditory neurons. Hear. Res. 55, 215-222) and may provide indirect physiological evidence for the existence of a class of low-SR auditory neurons in humans.

Original languageEnglish (US)
Pages (from-to)182-189
Number of pages8
JournalHearing Research
Volume124
Issue number1-2
DOIs
StatePublished - Oct 1998

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Keywords

  • Compound action potential
  • Forward masking
  • Human
  • Recovery
  • Spontaneous rate

ASJC Scopus subject areas

  • Sensory Systems

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