Inner hair cell responses to tonal stimulation in the presence of broadband noise

David F. Dolan, Alfred L. Nuttall

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The effects of broadband noise (BBN) on the tone-evoked dc receptor potential from inner hair cells of guinea pigs were measured. The effects of the noise were: suppression of the receptor potential, no net change, or greater depolarization relative to the tone alone, evoked receptor potential. The effects appear to be consistent with a two-tone suppression hypothesis. The time course of the suppression effect is immediate and constant in time. This observation suggests no obvious involvement of a local feedback loop in outer hair cells or one depending on the efferent nerves. Inner hair cell “sensitivity” is a variable in the magnitude of the suppression. Comparison of masked, tone-evoked dc receptor potential intensity functions to responses from auditory-nerve fibers (taken from the literature for experiments using a similar paradigm) differentiates the phenomena of suppression and adaptation in the auditory periphery.

Original languageEnglish (US)
Pages (from-to)1007-1012
Number of pages6
JournalJournal of the Acoustical Society of America
Volume86
Issue number3
DOIs
StatePublished - Jan 1 1989

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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