Amélioration de la perception spatiale et de la compréhension de la parole dans les mélanges multilocuteurs
The purpose of this study is to investigate several approaches for improving spatial perception and speech intelligibility in multitalker listening situations for hearing-aid users. The hypotheses are that spatial perception and speech intelligibility will be improved by (1) increased high-frequency audibility, (2) speech envelope enhancement, and/or (3) appropriate sound image externalization.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
The purpose of this study is to investigate several approaches for improving spatial perception and speech intelligibility in multitalker listening situations for hearing-aid users. Aim 1 will investigate how well different amplification strategies provide access to the spectrotemporally sparse speech information that is available in multitalker mixtures. The hypothesis is that subtle differences in high-frequency audibility across different strategies may have much greater effects on the intelligibility of sparse speech than intact speech. This Aim will involve 40 subjects with hearing loss across 2 experiments. Aim 2 is an exploratory aim that will investigate the potential of a speech enhancement algorithm to improve spatial hearing in multitalker mixtures. The hypothesis is that speech enhancement, in addition to its established monaural benefits, will enhance the salience of interaural time differences and thus provide binaural benefits in multitalker mixtures. This Aim will involve 30 subjects with normal hearing and 60 subjects with hearing loss across 3 experiments. Aim 3 will investigate how different hearing-aid styles affect sound externalization. The hypothesis is that hearing aids can disrupt sound externalization, which in turn impacts speech intelligibility in multitalker mixtures. This Aim will involve 30 subjects with normal hearing and 60 subjects with hearing loss across 3 experiments.
This is a prospective design involving adult human subjects. While the investigators will recruit subjects with normal and impaired hearing, all subjects will be assigned to the same set of experimental conditions. Therefore, for the purposes of intervention (or prospective assignment), the subjects can be treated as a single group completing the same intervention (or set of interventions). The behavioral experiments involve listening to speech sounds (either unaided, with hearing aids, or with simulated hearing aids), and providing responses related to spatial perception or speech intelligibility. The order of experimental conditions will be randomized for each subject in order to control for order effects. All of the experimental tasks and outcome measures have been previously established, have good reliability and validity, and will be appropriate for informing future studies.
Type d'étude
Inscription (Estimé)
Phase
- N'est pas applicable
Contacts et emplacements
Coordonnées de l'étude
- Nom: Virginia A Best, PhD
- Numéro de téléphone: (617) 353-2622
- E-mail: ginbest@bu.edu
Sauvegarde des contacts de l'étude
- Nom: Christine Mason
- Numéro de téléphone: cmason@bu.edu
- E-mail: cmason@bu.edu
Lieux d'étude
-
-
Massachusetts
-
Boston, Massachusetts, États-Unis, 02215
- Recrutement
- Boston University
-
Contact:
- Virginia Best
- Numéro de téléphone: 617-353-2622
- E-mail: ginbest@bu.edu
-
Chercheur principal:
- Virginia A Best, PhD
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria: Normal-Hearing Subjects
- 18 to 35 years of age
- Audiometric thresholds that do not exceed 20 dB HL at any frequency from 250 to 8000 Hz
- Able to provide informed consent and understand experimental instructions
- Normal or corrected-to-normal vision
Inclusion Criteria: Hearing-Impaired Subjects
- 18 to 80 years of age
- Documented sensorineural hearing loss
- Able to provide informed consent and understand experimental instructions
- Normal or corrected-to-normal vision
Exclusion Criteria (some experiments)
- Non-native speakers of English
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Science basique
- Répartition: N / A
- Modèle interventionnel: Affectation à un seul groupe
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Autre: Experimental condition
Participants will be presented with sound stimuli under a number of experimental conditions that simulate different hearing-aid conditions. |
The intervention will be a hearing aid or a modification to the sound stimulus that simulates a hearing aid configuration, style, or processing strategy. |
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Speech intelligibility at baseline
Délai: Baseline
|
Speech intelligibility scores will be measured in a baseline condition (e.g. unaided) and in a number of hearing-aid conditions (post-intervention). Scale is in percent correct (0-100%). |
Baseline
|
|
Speech intelligibility post-intervention
Délai: Up to 4 hours
|
Speech intelligibility scores will be measured in a baseline condition (e.g. unaided) and in a number of hearing-aid conditions (post-intervention). Scale is in percent correct (0-100%). |
Up to 4 hours
|
|
Speech reception threshold at baseline
Délai: Baseline
|
Speech reception thresholds will be measured in a baseline condition (e.g. unaided) and in a number of hearing-aid conditions (post-intervention). Scale is in decibels (the level of the target speech relative to the masker speech needed to identify 50% of the words in a sentence). |
Baseline
|
|
Speech reception threshold post-intervention
Délai: Up to 4 hours
|
Speech reception thresholds will be measured in a baseline condition (e.g. unaided) and in a number of hearing-aid conditions (post-intervention). Scale is in decibels (the level of the target speech relative to the masker speech needed to identify 50% of the words in a sentence). |
Up to 4 hours
|
|
Interaural time difference discrimination at baseline
Délai: Baseline
|
Thresholds for the discrimination of interaural time differences in speech will be measured in a baseline condition (e.g. unaided) and in a number of hearing-aid conditions (post-intervention). Scale is in microseconds. |
Baseline
|
|
Interaural time difference discrimination post-intervention
Délai: Up to 4 hours
|
Thresholds for the discrimination of interaural time differences in speech will be measured in a baseline condition (e.g. unaided) and in a number of hearing-aid conditions (post-intervention). Scale is in microseconds. |
Up to 4 hours
|
|
Externalization rating at baseline
Délai: Baseline
|
Externalization judgments for speech will be measured in a baseline condition (e.g. unaided) and in a number of different hearing-aid conditions (post-intervention). Scale is in percent (0-100%). |
Baseline
|
|
Externalization rating post-intervention
Délai: Up to 4 hours
|
Externalization judgments for speech will be measured in a baseline condition (e.g. unaided) and in a number of different hearing-aid conditions (post-intervention). Scale is in percent (0-100%). |
Up to 4 hours
|
Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Virginia A Best, PhD, Boston University
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
- Manifestations neurologiques
- Maladies du système nerveux
- Maladies oto-rhino-laryngologiques
- Troubles des sensations
- Maladies de l'oreille
- Troubles auditifs
- Conditions pathologiques, signes et symptômes
- Comportement
- Signes et symptômes
- Communication
- Comportement verbal
- Parole
- Perte d'audition
- Intelligibilité de la parole
Autres numéros d'identification d'étude
- 4218E
- R01DC015760 (Subvention/contrat des NIH des États-Unis)
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Description du régime IPD
Individual participant data that underlie results in a publication will be made publicly available.
Délai de partage IPD
The data will be made available at the time of the relevant publication.
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .