Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear Reflex

Sensory systems constantly adapt their responses to the current environment. In hearing, adaptation may facilitate communication in noisy settings, a benefit frequently (but controversially) attributed to the medial olivocochlear reflex (MOCR) enhancing the neural representation of speech. Here, we...

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Autores: Marrufo Pérez, Miriam Isabel, Eustaquio Martín, María Almudena, López-Poveda, Enrique A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/154983
Acceso en línea:http://hdl.handle.net/10366/154983
Access Level:acceso abierto
Palabra clave:adaptation
cochlear implant
envelope
medial olivocochlear reflex
olivocochlear efferents
temporal fine structure
Cochlear Implants
Reflex
3213.05 Cirugía de Garganta, Nariz y Oídos
2490 Neurociencias
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oai_identifier_str oai:gredos.usal.es:10366/154983
network_acronym_str ES
network_name_str España
repository_id_str
spelling Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear ReflexMarrufo Pérez, Miriam IsabelEustaquio Martín, María AlmudenaLópez-Poveda, Enrique A.adaptationcochlear implantenvelopemedial olivocochlear reflexolivocochlear efferentstemporal fine structureCochlear ImplantsReflex3213.05 Cirugía de Garganta, Nariz y Oídos2490 NeurocienciasSensory systems constantly adapt their responses to the current environment. In hearing, adaptation may facilitate communication in noisy settings, a benefit frequently (but controversially) attributed to the medial olivocochlear reflex (MOCR) enhancing the neural representation of speech. Here, we show that human listeners (N 14; five male) recognize more words presented monaurally in ipsilateral, contralateral, and bilateral noise when they are given some time to adapt to the noise. This finding challenges models and theories that claim that speech intelligibility in noise is invariant over time. In addition, we show that this adaptation to the noise occurs also for words processed to maintain the slow-amplitude modulations in speech (the envelope) disregarding the faster fluctuations (the temporal fine structure). This demonstrates that noise adaptation reflects an enhancement of amplitude modulation speech cues and is unaffected by temporal fine structure cues. Last, we show that cochlear implant users (N 7; four male) show normal monaural adaptation to ipsilateral noise. Because the electrical stimulation delivered by cochlear implants is independent from the MOCR, this demonstrates that noise adaptation does not require the MOCR. We argue that noise adaptation probably reflects adaptation of the dynamic range of auditory neurons to the noise level statistics.202420242018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10366/154983reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)Inglésinfo:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1549832026-06-07T06:28:51Z
dc.title.none.fl_str_mv Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear Reflex
title Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear Reflex
spellingShingle Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear Reflex
Marrufo Pérez, Miriam Isabel
adaptation
cochlear implant
envelope
medial olivocochlear reflex
olivocochlear efferents
temporal fine structure
Cochlear Implants
Reflex
3213.05 Cirugía de Garganta, Nariz y Oídos
2490 Neurociencias
title_short Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear Reflex
title_full Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear Reflex
title_fullStr Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear Reflex
title_full_unstemmed Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear Reflex
title_sort Adaptation to Noise in Human Speech Recognition Unrelated to the Medial Olivocochlear Reflex
dc.creator.none.fl_str_mv Marrufo Pérez, Miriam Isabel
Eustaquio Martín, María Almudena
López-Poveda, Enrique A.
author Marrufo Pérez, Miriam Isabel
author_facet Marrufo Pérez, Miriam Isabel
Eustaquio Martín, María Almudena
López-Poveda, Enrique A.
author_role author
author2 Eustaquio Martín, María Almudena
López-Poveda, Enrique A.
author2_role author
author
dc.subject.none.fl_str_mv adaptation
cochlear implant
envelope
medial olivocochlear reflex
olivocochlear efferents
temporal fine structure
Cochlear Implants
Reflex
3213.05 Cirugía de Garganta, Nariz y Oídos
2490 Neurociencias
topic adaptation
cochlear implant
envelope
medial olivocochlear reflex
olivocochlear efferents
temporal fine structure
Cochlear Implants
Reflex
3213.05 Cirugía de Garganta, Nariz y Oídos
2490 Neurociencias
description Sensory systems constantly adapt their responses to the current environment. In hearing, adaptation may facilitate communication in noisy settings, a benefit frequently (but controversially) attributed to the medial olivocochlear reflex (MOCR) enhancing the neural representation of speech. Here, we show that human listeners (N 14; five male) recognize more words presented monaurally in ipsilateral, contralateral, and bilateral noise when they are given some time to adapt to the noise. This finding challenges models and theories that claim that speech intelligibility in noise is invariant over time. In addition, we show that this adaptation to the noise occurs also for words processed to maintain the slow-amplitude modulations in speech (the envelope) disregarding the faster fluctuations (the temporal fine structure). This demonstrates that noise adaptation reflects an enhancement of amplitude modulation speech cues and is unaffected by temporal fine structure cues. Last, we show that cochlear implant users (N 7; four male) show normal monaural adaptation to ipsilateral noise. Because the electrical stimulation delivered by cochlear implants is independent from the MOCR, this demonstrates that noise adaptation does not require the MOCR. We argue that noise adaptation probably reflects adaptation of the dynamic range of auditory neurons to the noise level statistics.
publishDate 2018
dc.date.none.fl_str_mv 2018
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/154983
url http://hdl.handle.net/10366/154983
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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