scholarly journals Single-sided deafness and unilateral auditory deprivation in children: current challenge of improving sound localization ability

2020 ◽  
Vol 48 (1) ◽  
pp. 030006051989691
Author(s):  
Jinfeng Liu ◽  
Mo Zhou ◽  
Xiaolin He ◽  
Ningyu Wang
Keyword(s):  
Sound Localization ◽  
Auditory Deprivation ◽  
Current Challenge ◽  
Localization Ability ◽  
Single Sided Deafness

scholarly journals Benefits of Binaural Integration in Cochlear Implant Patients with Single-Sided Deafness and Residual Hearing in the Implanted Ear

Life ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 265
Author(s):  
Artur Lorens ◽  
Anita Obrycka ◽  
Piotr Henryk Skarzynski ◽  
Henryk Skarzynski
Keyword(s):  
Cochlear Implant ◽  
Sound Localization ◽  
Low Frequency ◽  
Hearing Preservation ◽  
Residual Hearing ◽  
Low Frequencies ◽  
Monosyllabic Words ◽  
Localization Ability ◽  
Single Sided Deafness ◽  
Spatial Locations

The purpose of the study is to gauge the benefits of binaural integration effects (redundancy and squelch) due to preserved low-frequency residual hearing in the implanted ear of cochlear implant users with single-sided deafness. There were 11 cochlear implant users (age 18–61 years old) who had preserved low-frequency hearing in the implanted ear; they had a normal hearing or mild hearing loss in the contralateral ear. Patients were tested with monosyllabic words, under different spatial locations of speech and noise and with the cochlear implant activated and deactivated, in two listening configurations—one in which low frequencies in the implanted ear were masked and another in which they were unmasked. We also investigated how cochlear implant benefit due to binaural integration depended on unaided sound localization ability. Patients benefited from the binaural integration effects of redundancy and squelch only in the unmasked condition. Pearson correlations between binaural integration effects and unaided sound localization error showed significance only for squelch (r = −0.67; p = 0.02). Hearing preservation after cochlear implantation has considerable benefits because the preserved low-frequency hearing in the implanted ear contributes to binaural integration, presumably through the preserved temporal fine structure.

Sound Localization Ability of Young Children With Bilateral Cochlear Implants

2007 ◽  
Vol 28 (4) ◽  
pp. 479-485 ◽  
Author(s):  
Jan-Willem Beijen ◽  
Ad F. M. Snik ◽  
Emmanuel A. M. Mylanus
Keyword(s):  
Young Children ◽  
Cochlear Implants ◽  
Sound Localization ◽  
Bilateral Cochlear Implants ◽  
Localization Ability

scholarly journals Effect of Tinnitus and Duration of Deafness on Sound Localization and Speech Recognition in Noise in Patients With Single-Sided Deafness

2018 ◽  
Vol 22 ◽  
pp. 233121651881380 ◽  
Author(s):  
Yang-Wenyi Liu ◽  
Xiaoting Cheng ◽  
Bing Chen ◽  
Kevin Peng ◽  
Akira Ishiyama ◽  
...  
Keyword(s):  
Speech Recognition ◽  
Sound Localization ◽  
Single Sided Deafness ◽  
Speech Recognition In Noise

scholarly journals Sound-localization performance of patients with single-sided deafness is not improved when listening with a bone-conduction device

2019 ◽  
Vol 372 ◽  
pp. 62-68 ◽  
Author(s):  
Martijn J.H. Agterberg ◽  
Ad F.M. Snik ◽  
Rens M.G. Van de Goor ◽  
Myrthe K.S. Hol ◽  
A. John Van Opstal
Keyword(s):  
Sound Localization ◽  
Bone Conduction ◽  
Localization Performance ◽  
Single Sided Deafness ◽  
Bone Conduction Device

Effect of training on human underwater sound‐localization ability

1975 ◽  
Vol 57 (5) ◽  
pp. 1212-1213 ◽  
Author(s):  
James L. Stouffer ◽  
E. Thomas Doherty ◽  
Harry Hollien
Keyword(s):  
Sound Localization ◽  
Underwater Sound ◽  
Localization Ability

Correlation Between the Activity of Single Auditory Cortical Neurons and Sound-Localization Behavior in the Macaque Monkey

2000 ◽  
Vol 83 (5) ◽  
pp. 2723-2739 ◽  
Author(s):  
Gregg H. Recanzone ◽  
Darren C. Guard ◽  
Mimi L. Phan ◽  
Tien-I K. Su
Keyword(s):  
Auditory Cortex ◽  
Sound Localization ◽  
Cortical Neurons ◽  
Primary Auditory Cortex ◽  
Macaque Monkey ◽  
Auditory Space ◽  
Spatial Sensitivity ◽  
Acoustic Space ◽  
Localization Ability ◽  
Primate Cerebral Cortex

Lesion studies have indicated that the auditory cortex is crucial for the perception of acoustic space, yet it remains unclear how these neurons participate in this perception. To investigate this, we studied the responses of single neurons in the primary auditory cortex (AI) and the caudomedial field (CM) of two monkeys while they performed a sound-localization task. Regression analysis indicated that the responses of ∼80% of neurons in both cortical areas were significantly correlated with the azimuth or elevation of the stimulus, or both, which we term “spatially sensitive.” The proportion of spatially sensitive neurons was greater for stimulus azimuth compared with stimulus elevation, and elevation sensitivity was primarily restricted to neurons that were tested using stimuli that the monkeys also could localize in elevation. Most neurons responded best to contralateral speaker locations, but we also encountered neurons that responded best to ipsilateral locations and neurons that had their greatest responses restricted to a circumscribed region within the central 60° of frontal space. Comparing the spatially sensitive neurons with those that were not spatially sensitive indicated that these two populations could not be distinguished based on either the firing rate, the rate/level functions, or on their topographic location within AI. Direct comparisons between the responses of individual neurons and the behaviorally measured sound-localization ability indicated that proportionally more neurons in CM had spatial sensitivity that was consistent with the behavioral performance compared with AI neurons. Pooling the responses across neurons strengthened the relationship between the neuronal and psychophysical data and indicated that the responses pooled across relatively few CM neurons contain enough information to account for sound-localization ability. These data support the hypothesis that auditory space is processed in a serial manner from AI to CM in the primate cerebral cortex.

scholarly journals Sound Localization in Single-Sided Deaf Participants Provided With a Cochlear Implant

2021 ◽  
Vol 12 ◽  
Author(s):  
Alexandra Annemarie Ludwig ◽  
Sylvia Meuret ◽  
Rolf-Dieter Battmer ◽  
Marc Schönwiesner ◽  
Michael Fuchs ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Sound Localization ◽  
High Frequency ◽  
Real Life ◽  
Low Frequency ◽  
Normal Hearing ◽  
Frequency Noise ◽  
Speech Understanding ◽  
Speech Understanding In Noise ◽  
Single Sided Deafness

Spatial hearing is crucial in real life but deteriorates in participants with severe sensorineural hearing loss or single-sided deafness. This ability can potentially be improved with a unilateral cochlear implant (CI). The present study investigated measures of sound localization in participants with single-sided deafness provided with a CI. Sound localization was measured separately at eight loudspeaker positions (4°, 30°, 60°, and 90°) on the CI side and on the normal-hearing side. Low- and high-frequency noise bursts were used in the tests to investigate possible differences in the processing of interaural time and level differences. Data were compared to normal-hearing adults aged between 20 and 83. In addition, the benefit of the CI in speech understanding in noise was compared to the localization ability. 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. Three participants always pointed to the normal-hearing side, irrespective of the location of the signal. The comparison with control data showed that participants had particular difficulties localizing sounds at frontal locations and on the CI side. In contrast to most previous results, participants were able to localize low-frequency signals, although they localized high-frequency signals more accurately. 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. Our data suggest that a CI can, to a large extent, restore localization in participants with single-sided deafness. Difficulties may remain at frontal locations and on the CI side. However, speech understanding in noise improves when wearing the CI. 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.

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