Acoustic simulation of cochlear implant hearing: Effect of manipulating various acoustic parameters on intelligibility of speech

Jain, Saransh; Ghosh, P.

doi:10.1080/14670100.2017.1386384

Cited by 3 publications

(4 citation statements)

References 34 publications

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“…Part of the success of cochlear implants seems to be related to the development of sophisticated signal-processing techniques and bioinspired coding strategies developed over the years (Clark, 2015;Boulet et al, 2016;Jain and Vipin Ghosh, 2018). Despite these encouraging results, most visual prosthesis devices only try to emulate the phototransducer aspects of the retina and do not consider the complex processes that are found in the mammalian visual system.…”

Section: Delivery Of Information To Implantsmentioning

confidence: 99%

Toward Long-Term Communication With the Brain in the Blind by Intracortical Stimulation: Challenges and Future Prospects

2020

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The restoration of a useful visual sense in a profoundly blind person by direct electrical stimulation of the visual cortex has been a subject of study for many years. However, the field of cortically based sight restoration has made few advances in the last few decades, and many problems remain. In this context, the scientific and technological problems associated with safe and effective communication with the brain are very complex, and there are still many unresolved issues delaying its development. In this work, we review some of the biological and technical issues that still remain to be solved, including longterm biotolerability, the number of electrodes required to provide useful vision, and the delivery of information to the implants. Furthermore, we emphasize the possible role of the neuroplastic changes that follow vision loss in the success of this approach. We propose that increased collaborations among clinicians, basic researchers, and neural engineers will enhance our ability to send meaningful information to the brain and restore a limited but useful sense of vision to many blind individuals.

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Section: Delivery Of Information To Implantsmentioning

confidence: 99%

Toward Long-Term Communication With the Brain in the Blind by Intracortical Stimulation: Challenges and Future Prospects

2020

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“…If we compare the current status of visual prostheses with that of cochlear implants (hearing restoration prostheses), there are some interesting observations. Thus, much of the recent successes of cochlear implants has been due to the advancement of signal processing techniques developed over the years and to the development of state-of-the-art multi-channel implants (Boulet et al, 2016;Jain & Vipin Ghosh, 2018;Clark, 2015). However, present visual prostheses only emulate the phototransducer aspect of the retina and lack most of the processing functionality that is found in the visual system.…”

Section: Delivering Of Information To Implantsmentioning

confidence: 99%

Development of visual Neuroprostheses: trends and challenges

Fernández

2018

Bioelectron Med

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Visual prostheses are implantable medical devices that are able to provide some degree of vision to individuals who are blind. This research field is a challenging subject in both ophthalmology and basic science that has progressed to a point where there are already several commercially available devices. However, at present, these devices are only able to restore a very limited vision, with relatively low spatial resolution. Furthermore, there are still many other open scientific and technical challenges that need to be solved to achieve the therapeutic benefits envisioned by these new technologies. This paper provides a brief overview of significant developments in this field and introduces some of the technical and biological challenges that still need to be overcome to optimize their therapeutic success, including long-term viability and biocompatibility of stimulating electrodes, the selection of appropriate patients for each artificial vision approach, a better understanding of brain plasticity and the development of rehabilitative strategies specifically tailored for each patient.

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“…Limited spectral resolution of the cochlear implant device affects the quality by which listeners with CIs receive speech cues (Croghan, Duran, & Smith, 2017; Jain & Vipin Ghosh, 2018; Peng, Hess, Saffran, Edwards, & Litovsky, 2019; Qin & Oxenham, 2005), which may negatively impact CI users’ ability to recognize words and phonemes, especially children (Grieco-calub, Saffran, & Litovsky, 2010; Peng et al, 2019). Therefore, any likely beneficial role of IDS in improvement of speech intelligibility is prone to change when caregivers’ speech is perceived through a CI device.…”

Section: Introductionmentioning

confidence: 99%

“…In a third method – the one which we focus on in the present paper – acoustic properties of simulated CI speech and unprocessed analogs are analyzed comparatively. This comparative analysis can be facilitated through the use of various quantitative metrics that emulate speech recognition in CI users as proxies to analyze properties of CI speech and its perception in listeners with CIs (Jain & Vipin Ghosh, 2018; Qin & Oxenham, 2003; Santos, Cosentino, Hazrati, Loizou, & Falk, 2013). Analysis of simulated CI speech and quantitative measures of speech quality and intelligibility tailored to listeners with CIs provide repeatable, automated, inexpensive, and fast tools for gaining preliminary evidence about speech perception in individuals with CIs.…”

Section: Introductionmentioning

confidence: 99%

Cochlear implant-related speech processing may diminish the advantage of exposure to infant-directed speech

Arjmandi

Houston

Wang

et al. 2020

Preprint

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Caregivers modify their speech when talking to infants, a specific type of speech known as infant-directed speech (IDS). This speaking style facilitates language learning compared to adult-directed speech (ADS) in infants with normal hearing (NH). While infants with NH and those with cochlear implants (CIs) prefer listening to IDS over ADS, it is yet unknown how CI speech processing may affect the acoustic distinctiveness between ADS and IDS, as well as the degree of intelligibility of these. This study analyzed speech of seven female adult talkers to investigate the effects of simulated CI speech processing on (1) acoustic distinctiveness between ADS and IDS, (2) estimates of intelligibility of caregivers speech in ADS and IDS, and (3) individual differences in caregivers ADS-to-IDS modification and speech intelligibility. Results suggest that CI speech processing is substantially detrimental to the acoustic distinctiveness between ADS and IDS, as well as to the intelligibility benefit derived from ADS-to-IDS modifications. Moreover, the observed considerable variability across individual talkers in acoustic implementation of ADS-to-IDS modification and speech intelligibility was significantly reduced due to CI speech processing. The findings are discussed in the context of the link between IDS and language learning in infants with CIs.

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Acoustic simulation of cochlear implant hearing: Effect of manipulating various acoustic parameters on intelligibility of speech

Abstract: Pulse rate/channel and 'n of m' contribute maximally to speech intelligibility, at least in simulations of electric hearing.

Cited by 3 publications

References 34 publications

Toward Long-Term Communication With the Brain in the Blind by Intracortical Stimulation: Challenges and Future Prospects

Toward Long-Term Communication With the Brain in the Blind by Intracortical Stimulation: Challenges and Future Prospects

Development of visual Neuroprostheses: trends and challenges

Cochlear implant-related speech processing may diminish the advantage of exposure to infant-directed speech

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