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Objective Different procedures have been described to treat superior canal dehiscence. The present study aims to describe the results obtained with middle fossa approach, transmastoid approach, and round window reinforcement in a large series of patients. Methods and Design In this single‐center retrospective study, we report the results of the procedures performed between 2006 and 2019 using the three main surgical approaches, middle fossa approach (MFA), transmastoid approach (TMA), and round window reinforcement (RWR). The outcome on cardinal cochlear and vestibular symptoms, audiometric results, and changes in cervical vestibular evoked myogenic potentials (cVEMPs) were analyzed. The patients were also interviewed 12 months to 13 years post‐treatment to establish their overall satisfaction following surgery. Results Sixty‐three patients were divided into three groups: 42 MFA; 12 RWR; 9 TMA. Postsurgical control rates exceeded 80% for the majority of symptoms in the MFA and TMA groups, and ranged from 11.1% to 83.3% for the RWR group. Over 90% of MFA or TMA patients and 60% of the RWR cohort were satisfied overall with their treatment. Hearing thresholds were intact following surgery in the MFA and TMA groups. There was one case of profound postoperative deafness in the RWR group. Conclusion MFA and TMA are both safe and effective techniques in the treatment of disabling SSCD. Since MFA is the more invasive technique, we suggest that TMA should be proposed as first‐line treatment, temporal bone anatomy permitting. RWR outcomes are more variable in term of symptomatic control, and this option could be offered to patients at risk under general anesthesia. Level of evidence Level 4 evidence.

Resume Objectifs L’objectif principal de cette etude etait d’evaluer la faisabilite d’une mesure de l’angle minimal audible au casque sur plusieurs positions dans le plan horizontal, en comparant plusieurs types de fonctions de transfert preenregistrees. L’objectif secondaire consistait a evaluer les performances de discrimination spatiale dans une condition simulee de surdite unilaterale en mesurant l’angle minimal audible dans des conditions monaurales au casque. Materiaux et methodes Une evaluation de l’angle minimal audible a ete realisee chez 27 sujets normo-entendants, en utilisant quatre bases de donnees de fonctions de transfert prealablement enregistrees : deux fonctions de transfert enregistrees sur des mannequins (KU100, KEMAR), et deux ensembles de fonctions de transfert individualisees preenregistrees (TBM, PBM). Les performances ont ete evaluees sur 3 positions de reference (0°, 50° et 180°) dans une condition binaurale et deux conditions monaurales. Resultats KU100 generait des valeurs d’angle minimal audible plus petites que KEMAR en position frontale, et en position laterale (p Conclusion Cette etude suggerait que l’evaluation des capacites de discrimination spatiale par mesure de l’angle minimal audible avec la fonction de transfert KU100 etait fiable et robuste.

International audience; Objectives: The main objective of this study was to test the feasibility of measuring minimum audible angle in headphones with different reference positions in the horizontal plane, and comparing different types of pre-recorded head-related transfer functions. The secondary objective was to assess spatial discrimination performance in simulated unilateral hearing loss by measuring the minimum audible angle under monaural conditions using headphones. Materials and methods: Minimum audible angle was assessed in 27 normal-hearing subjects, to test their spatial discrimination abilities, using 4 datasets of pre-recorded head-related transfer functions: 2 recorded on mannequins (KU100, KEMAR), and 2 individualized head-related transfer function datasets (TBM, PBM). Performance was evaluated at 3 reference positions (0 • , 50 • and 180 •) in 1 binaural and 2 monaural conditions. Results: KU100 generated minimum audible angle values smaller than KEMAR in frontal and lateral position P < 0.005), with a suggestive difference (P < 0.05) compared to TBM and PBM in the frontal and lateral planes. Comparison between binaural and monaural conditions showed significant differences in frontal position for MON-c (contralateral) and MON-i (ipsilateral) (P < 0.001), in lateral position for MON-c only (P < 0.001) and in posterior position for MON-c and MON-i (P < 0.001). Conclusion: This study suggests that evaluation of spatial discrimination capacity using minimum audible angle with the KU100 head-related transfer dataset was reliable and robust.

International audience; Studies on audiovisual interactions in sound localization have primarily focused on the relations between the spatial position of sounds and their perceived visual source, as in the famous ventriloquist effect. Much less work has examined the effects on sound localization of seeing aspects of the visual environment. In this study, we took advantage of an innovative method for the study of spatial hearing-based on real sounds, virtual reality and real-time kinematic tracking-to examine the impact of a minimal visual spatial frame on sound localization. We tested sound localization in normal hearing participants (N = 36) in two visual conditions: a uniform gray scene and a simple visual environment comprising only a grid. In both cases, no visual cues about the sound sources were provided. During and after sound emission, participants were free to move their head and eyes without restriction. We found that the presence of a visual spatial frame improved hand-pointing in elevation. In addition, it determined faster first-gaze movements to sounds. Our findings show that sound localization benefits from the presence of a minimal visual spatial frame and confirm the importance of combining kinematic tracking and virtual reality when aiming to reveal the multisensory and motor contributions to spatial-hearing abilities.