A mechanoelectrical mechanism for detection of sound envelopes in the hearing organ

Ricci, Anthony J. (author): Stanford Univ, CA 94025 USA; Stanford Univ, CA 94025 USA

Stenfelt, Stefan (author): Linköpings universitet,Avdelningen för Logopedi, Audiologi och Otorhinolaryngologi,Medicinska fakulteten

Lunner, Thomas (author): Linköpings universitet,Handikappvetenskap,Filosofiska fakulteten,Institutet för handikappvetenskap (IHV),Oticon AS, Denmark

Fridberger, Anders (author): Linköpings universitet,Avdelning för neurobiologi,Medicinska fakulteten,Oregon Hlth and Sci Univ, OR 97239 USA

(creator_code:org_t)

Related links:: https://liu.diva-por... (primary) (Raw object); show more...; https://www.nature.c...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

To understand speech, the slowly varying outline, or envelope, of the acoustic stimulus is used to distinguish words. A small amount of information about the envelope is sufficient for speech recognition, but the mechanism used by the auditory system to extract the envelope is not known. Several different theories have been proposed, including envelope detection by auditory nerve dendrites as well as various mechanisms involving the sensory hair cells. We used recordings from human and animal inner ears to show that the dominant mechanism for envelope detection is distortion introduced by mechanoelectrical transduction channels. This electrical distortion, which is not apparent in the sound-evoked vibrations of the basilar membrane, tracks the envelope, excites the auditory nerve, and transmits information about the shape of the envelope to the brain.

By the author/editor: Nuttall, Alfred ...; Ricci, Anthony J ...; Burwood, George; Harte, James M.; Stenfelt, Stefan; Caye-Thomasen, P ...; show more...; Ren, Tianying; Ramamoorthy, Sri ...; Zhang, Yuan; Wilson, Teresa; Lunner, Thomas; Moore, Brian C. ...; Fridberger, Ande ...; show less...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Neurosciences

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