Pitch Scaling and Speech Understanding by Patients Who Use the Ineraid Cochlear Implant

Dorman, Michael F.; Smith, Luke; McCandless, Geary A.; Dunnavant, Greg; Parkin, James L.; Dankowski, Korine

doi:10.1097/00003446-199008000-00010

Cited by 43 publications

(33 citation statements)

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“…Their result contrasts with the current study in which CNC word scores were significantly correlated with mean interaction indices. The current results are consistent with results of numerous published studies that have suggested a relationship between speech understanding and spectral resolution (e.g., Dorman et al, 1990;Busby et al, 1993;Nelson et al, 1995;Donaldson and Nelson, 2000;Throckmorton and Collins, 1999;Henry et al, 2000;Litvak et al, 2007). Although there is not complete agreement in the published data (e.g., Zwolan 1997), overall there is considerable support in the literature for the view that spectral resolution is relevant to speech understanding in CI users.…”

Section: Discussionsupporting

confidence: 90%

Relationship between channel interaction and spectral-ripple discrimination in cochlear implant users

Jones

Won

Drennan

et al. 2013

The Journal of the Acoustical Society of America

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Cochlear implant (CI) users can achieve remarkable speech understanding, but there is great variability in outcomes that is only partially accounted for by age, residual hearing, and duration of deafness. Results might be improved with the use of psychophysical tests to predict which sound processing strategies offer the best potential outcomes. In particular, the spectral-ripple discrimination test offers a time-efficient, nonlinguistic measure that is correlated with perception of both speech and music by CI users. Features that make this "one-point" test time-efficient, and thus potentially clinically useful, are also connected to controversy within the CI field about what the test measures. The current work examined the relationship between thresholds in the one-point spectral-ripple test, in which stimuli are presented acoustically, and interaction indices measured under the controlled conditions afforded by direct stimulation with a research processor. Results of these studies include the following: (1) within individual subjects there were large variations in the interaction index along the electrode array, (2) interaction indices generally decreased with increasing electrode separation, and (3) spectral-ripple discrimination improved with decreasing mean interaction index at electrode separations of one, three, and five electrodes. These results indicate that spectral-ripple discrimination thresholds can provide a useful metric of the spectral resolution of CI users.

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Section: Discussionsupporting

confidence: 90%

Relationship between channel interaction and spectral-ripple discrimination in cochlear implant users

Jones

Won

Drennan

et al. 2013

The Journal of the Acoustical Society of America

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“…For example, CI recipients perform with similar accuracy as normal-hearing adults with regard to simple rhythmic patterns presented at a moderate rate (Dorman et al, 1991;Gfeller and Lansing, 1991, 1992; Schultz and Kerber, 1994;Gfeller et al, 1997); however, implant recipients are significantly less accurate than normal-hearing adults on pitch perception, including detecting pitch change (frequency difference limens) (McDermott, 2004;Gfeller et al, 2002a), identifying direction of pitch change (higher or lower) (Gfeller et al, 2002a;Laneau et al, 2004;McDermott, 2004), and discrimination of brief pitch patterns (Gfeller and Lansing, 1991, 1992). In most cases, recipients of CIs require considerably larger frequency differences than adults with normal hearing for detecting pitch change and direction of pitch change (e.g., Gfeller et al, 2002aGfeller et al, , 2007Kong et al, 2004;Looi et al, 2004;McDermott, 2004).…”

Section: Nih-pa Author Manuscriptmentioning

confidence: 96%

Multivariate Predictors of Music Perception and Appraisal by Adult Cochlear Implant Users

Gfeller

Oleson²,

Knutson³

et al. 2008

J Am Acad Audiol

123

176

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The research examined whether performance by adult cochlear implant recipients on a variety of recognition and appraisal tests derived from real-world music could be predicted from technological, demographic, and life experience variables, as well as speech recognition scores. A representative sample of 209 adults implanted between 1985 and 2006 participated. Using multiple linear regression models and generalized linear mixed models, sets of optimal predictor variables were selected that effectively predicted performance on a test battery that assessed different aspects of music listening. These analyses established the importance of distinguishing between the accuracy of music perception and the appraisal of musical stimuli when using music listening as an index of implant success. Importantly, neither device type nor processing strategy predicted music perception or music appraisal. Speech recognition performance was not a strong predictor of music perception, and primarily predicted music perception when the test stimuli included lyrics. Additionally, limitations in the utility of speech perception in predicting musical perception and appraisal underscore the utility of music perception as an alternative outcome measure for evaluating implant outcomes. Music listening background, residual hearing (i.e., hearing aid use), cognitive factors, and some demographic factors predicted several indices of perceptual accuracy or appraisal of music. KeywordsCochlear implant; cognitive; music; speech perceptionThe cochlear implant (CI) is a prosthetic hearing device developed primarily to assist persons who are severely to profoundly deaf with verbal communication. The device picks up acoustic signals through an externally worn microphone, and these signals are then processed to filter and extract those components of sound critically important for speech perception. Those components are conveyed via electrical signals to an array of electrodes in the cochlea, resulting in electrical stimulation of the auditory nerve. This signal is then transmitted to the central Kate Gfeller, Department of Otolaryngology, 200 Hawkins Drive, 21201 PFP, Iowa City, IA 52242-1078 Portions of this article were presented in the keynote address for Music Perception for Cochlear Implant Workshops, University of Washington, Seattle, October 17, 2006 NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript auditory pathway for interpretation. Although the device does not provide an exact replica of normal hearing, the majority of postlingually deafened implant recipients using modern CIs score above 80% on high-context sentences in quiet listening conditions, even without visual cues (Wilson, 2000).Although CIs have been quite successful in providing implant recipients with speech perception, they are less effective in transmitting the fine structural features of sound that contribute to music perception (e.g., Gfeller et al, 2000aGfeller et al, , 2002aGfeller et al, , 2003Gfeller et al, , 2005Gfeller et al, , 2007Le...

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“…Results from an experiment in which implant users were asked to determine if a musical scale was played ascending or descending were reported by Dorman et al (1991). The subjects were 16 users of the Ineraid multiple-channel implant and the CA sound-processing scheme.…”

Section: Melodic Pattern Recognitionmentioning

confidence: 99%

Music Perception with Cochlear Implants: A Review

McDermott

2004

Trends in Amplification

450

390

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The acceptance of cochlear implantation as an effective and safe treatment for deafness has increased steadily over the past quarter century. The earliest devices were the first implanted prostheses found to be successful in compensating partially for lost sensory function by direct electrical stimulation of nerves. Initially, the main intention was to provide limited auditory sensations to people with profound or total sensorineural hearing impairment in both ears. Although the first cochlear implants aimed to provide patients with little more than awareness of environmental sounds and some cues to assist visual speech-reading, the technology has advanced rapidly. Currently, most people with modern cochlear implant systems can understand speech using the device alone, at least in favorable listening conditions. In recent years, an increasing research effort has been directed towards implant users’ perception of nonspeech sounds, especially music. This paper reviews that research, discusses the published experimental results in terms of both psychophysical observations and device function, and concludes with some practical suggestions about how perception of music might be enhanced for implant recipients in the future. The most significant findings of past research are: (1) On average, implant users perceive rhythm about as well as listeners with normal hearing; (2) Even with technically sophisticated multiple-channel sound processors, recognition of melodies, especially without rhythmic or verbal cues, is poor, with performance at little better than chance levels for many implant users; (3) Perception of timbre, which is usually evaluated by experimental procedures that require subjects to identify musical instrument sounds, is generally unsatisfactory; (4) Implant users tend to rate the quality of musical sounds as less pleasant than listeners with normal hearing; (5) Auditory training programs that have been devised specifically to provide implant users with structured musical listening experience may improve the subjective acceptability of music that is heard through a prosthesis; (6) Pitch perception might be improved by designing innovative sound processors that use both temporal and spatial patterns of electric stimulation more effectively and precisely to overcome the inherent limitations of signal coding in existing implant systems; (7) For the growing population of implant recipients who have usable acoustic hearing, at least for low-frequency sounds, perception of music is likely to be much better with combined acoustic and electric stimulation than is typical for deaf people who rely solely on the hearing provided by their prostheses.

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Pitch Scaling and Speech Understanding by Patients Who Use the Ineraid Cochlear Implant

Cited by 43 publications

References 0 publications

Relationship between channel interaction and spectral-ripple discrimination in cochlear implant users

Relationship between channel interaction and spectral-ripple discrimination in cochlear implant users

Multivariate Predictors of Music Perception and Appraisal by Adult Cochlear Implant Users

Music Perception with Cochlear Implants: A Review

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