scholarly journals Speech masking release in Hybrid cochlear implant users: Roles of spectral and temporal cues in electric-acoustic hearing

2020 ◽  
Vol 147 (5) ◽  
pp. 3667-3683
Author(s):  
Viral D. Tejani ◽  
Carolyn J. Brown
Keyword(s):  
Cochlear Implant ◽  
Masking Release ◽  
Temporal Cues ◽  
Acoustic Hearing

scholarly journals The Spatial Selective Auditory Attention of Cochlear Implant Users in Different Conversational Sound Levels

2021 ◽  
Vol 10 (14) ◽  
pp. 3078
Author(s):  
Sara Akbarzadeh ◽  
Sungmin Lee ◽  
Chin-Tuan Tan
Keyword(s):  
Cochlear Implant ◽  
Sound Level ◽  
Auditory Attention ◽  
Impaired Hearing ◽  
Speech Stimuli ◽  
Electric Hearing ◽  
Sound Levels ◽  
Acoustic Hearing ◽  
Speech Envelope ◽  
Different Levels

In multi-speaker environments, cochlear implant (CI) users may attend to a target sound source in a different manner from normal hearing (NH) individuals during a conversation. This study attempted to investigate the effect of conversational sound levels on the mechanisms adopted by CI and NH listeners in selective auditory attention and how it affects their daily conversation. Nine CI users (five bilateral, three unilateral, and one bimodal) and eight NH listeners participated in this study. The behavioral speech recognition scores were collected using a matrix sentences test, and neural tracking to speech envelope was recorded using electroencephalography (EEG). Speech stimuli were presented at three different levels (75, 65, and 55 dB SPL) in the presence of two maskers from three spatially separated speakers. Different combinations of assisted/impaired hearing modes were evaluated for CI users, and the outcomes were analyzed in three categories: electric hearing only, acoustic hearing only, and electric + acoustic hearing. Our results showed that increasing the conversational sound level degraded the selective auditory attention in electrical hearing. On the other hand, increasing the sound level improved the selective auditory attention for the acoustic hearing group. In the NH listeners, however, increasing the sound level did not cause a significant change in the auditory attention. Our result implies that the effect of the sound level on selective auditory attention varies depending on the hearing modes, and the loudness control is necessary for the ease of attending to the conversation by CI users.

Clinical Outcomes for Adult Cochlear Implant Recipients Experiencing Loss of Usable Acoustic Hearing in the Implanted Ear

2015 ◽  
Vol 36 (3) ◽  
pp. 338-356 ◽  
Author(s):  
Kerrie L. Plant ◽  
Richard J. M. van Hoesel ◽  
Hugh J. McDermott ◽  
Pamela W. Dawson ◽  
Robert S. Cowan
Keyword(s):  
Cochlear Implant ◽  
Clinical Outcomes ◽  
Acoustic Hearing

scholarly journals Age-Related Temporal Processing Deficits in Word Segments in Adult Cochlear-Implant Users

2019 ◽  
Vol 23 ◽  
pp. 233121651988668 ◽  
Author(s):  
Zilong Xie ◽  
Casey R. Gaskins ◽  
Maureen J. Shader ◽  
Sandra Gordon-Salant ◽  
Samira Anderson ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Temporal Processing ◽  
Word Identification ◽  
Speech Understanding ◽  
Potential Mechanism ◽  
Auditory Temporal Processing ◽  
Categorization Task ◽  
Performance Differences ◽  
Temporal Cues ◽  
Age Related

Aging may limit speech understanding outcomes in cochlear-implant (CI) users. Here, we examined age-related declines in auditory temporal processing as a potential mechanism that underlies speech understanding deficits associated with aging in CI users. Auditory temporal processing was assessed with a categorization task for the words dish and ditch (i.e., identify each token as the word dish or ditch) on a continuum of speech tokens with varying silence duration (0 to 60 ms) prior to the final fricative. In Experiments 1 and 2, younger CI (YCI), middle-aged CI (MCI), and older CI (OCI) users participated in the categorization task across a range of presentation levels (25 to 85 dB). Relative to YCI, OCI required longer silence durations to identify ditch and exhibited reduced ability to distinguish the words dish and ditch (shallower slopes in the categorization function). Critically, we observed age-related performance differences only at higher presentation levels. This contrasted with findings from normal-hearing listeners in Experiment 3 that demonstrated age-related performance differences independent of presentation level. In summary, aging in CI users appears to degrade the ability to utilize brief temporal cues in word identification, particularly at high levels. Age-specific CI programming may potentially improve clinical outcomes for speech understanding performance by older CI listeners.

scholarly journals Speech recognition in noise for cochlear implant listeners: Benefits of residual acoustic hearing

2004 ◽  
Vol 115 (4) ◽  
pp. 1729-1735 ◽  
Author(s):  
Christopher W. Turner ◽  
Bruce J. Gantz ◽  
Corina Vidal ◽  
Amy Behrens ◽  
Belinda A. Henry
Keyword(s):  
Speech Recognition ◽  
Cochlear Implant ◽  
Acoustic Hearing ◽  
Speech Recognition In Noise

scholarly journals Spatial Release From Masking in Simulated Cochlear Implant Users With and Without Access to Low-Frequency Acoustic Hearing

2015 ◽  
Vol 19 ◽  
pp. 233121651561694 ◽  
Author(s):  
Ben Williges ◽  
Mathias Dietz ◽  
Volker Hohmann ◽  
Tim Jürgens
Keyword(s):  
Cochlear Implant ◽  
Low Frequency ◽  
Spatial Release ◽  
Acoustic Hearing ◽  
Release From Masking
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