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     <dc:title xml:lang="en">Comparison of tonotopic-based fitting and conventional frequency fitting in new cochlear implantees : a randomized, double- blind, cross-over study</dc:title>
     <dcterms:alternative xml:lang="fr">Comparaison d’un réglage tonotopique et d’un réglage fréquentiel conventionnel chez les nouveaux implants cochléaires : une étude randomisée, en double aveugle, en cross-over</dcterms:alternative>
     <dc:subject xml:lang="fr">Implants cochléaires</dc:subject><dc:subject xml:lang="fr">tonotopie</dc:subject><dc:subject xml:lang="fr">audiométrie</dc:subject>
     <dc:subject xml:lang="en">Cochlear implant</dc:subject><dc:subject xml:lang="en">tonotopy</dc:subject><dc:subject xml:lang="en">audiometric tests</dc:subject>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="029339243">Implants cochléaires</tef:elementdEntree>
					</tef:vedetteRameauNomCommun><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="02722922X">Audiométrie </tef:elementdEntree>
					</tef:vedetteRameauNomCommun><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027369137">Bruit‎</tef:elementdEntree>
					</tef:vedetteRameauNomCommun><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027457966">Perception auditive‎</tef:elementdEntree>
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     <dcterms:abstract xml:lang="fr">Objectif : Alors que l'implant cochléaire a apporté des bénéfices pour la reconnaissance de la parole dans le silence pour les patients présentant une déficience auditive sévère et profonde, sa pertinence pour la perception de la parole dans le bruit reste modeste. Le but de notre étude était d'évaluer l'impact d'un réglage tonotopique sur la perception de la parole dans le bruit, dans le silence et de signaux sonores complexes chez les patients implantés cochléaires. Matériels et méthodes : Une étude prospective, randomisée, en double aveugle, en cross-over, portant sur 24 patients implantés cochléaires a été réalisée entre septembre 2019 et mai 2021. Le réglage tonotopique théorique était déterminé à l'aide d’un scanner et d'un logiciel de reconstruction basé sur la fonction de Greenwood. Chaque patient était randomisé pour recevoir un réglage conventionnel suivi d'un réglage tonotopique ou vice versa. Chaque réglage était maintenu pendant 6 semaines. Les participants effectuaient des tests de perception de la parole et de signaux scores complexes après 6 semaines de chaque réglage. Résultats : La reconnaissance de la parole dans le bruit était significativement meilleure avec le réglage tonotopique à tous les niveaux de bruit (SNR) testés (SNR = + 9 dB, p = 0,002, effet moyen (ME) = 12,1 %, taille d'effet standardisée (SES) =0,71 ; SNR=+6 dB, p=2,9 10-5, ME=16,3 %, SES=1,07 ; SNR=+3 dB, p=0,0004, ME=13,8 %, SES=0,84 ; SNR=0 dB, p = 0,003, ME = 10,8 %, SSE = 0,68). Aucun effet de période ni d'interaction n'a été observé. La reconnaissance de la parole dans le silence et l’audiométrie tonale n'étaient pas significativement différentes entre les deux réglages. Les scores d'évaluation qualitative multidimensionnelle de Gabrielsson, d'identification des contours mélodiques et de reconnaissance mélodique étaient significativement plus élevés avec le réglage tonotopique qu'avec le cadre conventionnel (ME=7.8, CI95%=5;10.5, p=6.10-6, ME=12.1%, CI95%=5.7 ;18,4, p=0,0007 et ME=2,1, IC95 %=1,7;2,5, p=7,7,10-10, respectivement). Conclusion : Pour les nouveaux patients implantés cochléaires, un réglage tonotopique apparaît plus pertinent que le réglage fréquentiel par défaut car il permet d'obtenir de meilleurs résultats dans le bruit et pour percevoir des signaux sonores complexes avec des résultats comparables dans le silence.</dcterms:abstract>
     <dcterms:abstract xml:lang="en">Purpose: While cochlear implants have provided benefits for speech recognition in quiet for patients with severe and profound hearing impairment, its relevance for perceiving speech-in-noise and complex sound signals remains modest. The aim of our study was to assess the impact of a tonotopic setting on speech and pitch perception among new cochlear implant users. Materials and Methods: A prospective, randomized, double-blind, cross-over, study of 24 cochlear implant users was performed from September 2019 to May 2021. Theoretical tonotopic map was determined using flat-panel computed tomography and a reconstruction software based on Greenwood function. Each patient was randomized to receive conventional setting followed by tonotopic setting or vice versa. Each setting was maintained for 6 weeks. Participants performed speech perception tasks and pitch-scaling tasks after 6 weeks of each setting. Results: Speech recognition in noise was significantly better with the anatomy-based fitting at all signal- to-noise ratio (SNR) tested (SNR=+9 dB, p=0.002, mean effect(ME)=12.1%, standardized effect size(SES)=0.71; SNR=+6 dB, p=2.9 10-5, ME=16.3%, SES=1.07; SNR=+3 dB, p=0.0004, ME=13.8%, SES=0.84; SNR=0 dB, p=0.003, ME=10.8%, SES=0.68). No period nor interaction effect was observed. Speech recognition in quiet and tonal audiometry were not significantly different between the two fittings. The multidimensional qualitative assessment, melodic contour identification and melodic recognition scores were significantly higher with the tonotopic setting than the conventional one (ME=7.8, CI95%=5;10.5, p=6.10-6, ME=12.1%, CI95%=5.7;18.4, p=0.0007 and ME=2.1, CI95%=1.7;2.5, p=7.7.10-10, respectively). Conclusion: For new implanted cochlear patients a tonotopic-based fitting appears more relevant than the default frequency fitting because it allows to obtain better results in noise and better perception of complex sound signals with the same results in quiet.</dcterms:abstract>
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       <tef:prenom>Gwenaëlle</tef:prenom>
       
       <tef:dateNaissance>1990-11-09</tef:dateNaissance>
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                            <tef:thesis.degree.discipline xml:lang="fr">Oto-Rhino-Laryngologie</tef:thesis.degree.discipline>
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