![]() ![]() The treatment with a CI in these participants might provide real-world benefits, such as improved orientation in traffic and speech understanding in difficult listening situations. ![]() However, speech understanding in noise improves when wearing the CI. Difficulties may remain at frontal locations and on the CI side. Our data suggest that a CI can, to a large extent, restore localization in participants with single-sided deafness. Speech understanding in noise was better with the CI compared to testing without CI, but only at a position where the CI also improved sound localization. In contrast to most previous results, participants were able to localize low-frequency signals, although they localized high-frequency signals more accurately. The comparison with control data showed that participants had particular difficulties localizing sounds at frontal locations and on the CI side. Three participants always pointed to the normal-hearing side, irrespective of the location of the signal. Fifteen out of 18 participants were able to localize signals on the CI side and on the normal-hearing side, although performance was highly variable across participants. In addition, the benefit of the CI in speech understanding in noise was compared to the localization ability. Data were compared to normal-hearing adults aged between 20 and 83. Low- and high-frequency noise bursts were used in the tests to investigate possible differences in the processing of interaural time and level differences. ![]() Sound localization was measured separately at eight loudspeaker positions (4°, 30°, 60°, and 90°) on the CI side and on the normal-hearing side. The present study investigated measures of sound localization in participants with single-sided deafness provided with a CI. This ability can potentially be improved with a unilateral cochlear implant (CI). Spatial hearing is crucial in real life but deteriorates in participants with severe sensorineural hearing loss or single-sided deafness. 5Hospital of the University of Berlin, Charité Medical School, Berlin, Germany.4Hearing Therapy Center Potsdam, Potsdam, Germany.3Department of Otolaryngology, Unfallkrankenhaus Berlin, Berlin, Germany.2Faculty of Life Sciences, University of Leipzig, Leipzig, Germany.1Section of Phoniatrics and Audiology, Department of Otorhinolaryngology, University Hospital of Leipzig, Leipzig, Germany.Alexandra Annemarie Ludwig 1,2 *, Sylvia Meuret 1, Rolf-Dieter Battmer 3,4, Marc Schönwiesner 2, Michael Fuchs 1 and Arne Ernst 3,5 ![]()
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