Re-examining the relationship between number of cochlear implant channels and maximal speech intelligibility
This study reconsiders the number of effective channels in contemporary cochlear implants. Subjects listened to matrix sentences with a competing talker using their clinical map (up to 22 electrodes) and reduced-channel maps using 12, 8, and 4 electrodes. Spectro-temporal modulation thresholds and r...
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| Published in | The Journal of the Acoustical Society of America Vol. 142; no. 6; pp. EL537 - EL543 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.12.2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0001-4966 1520-8524 1520-8524 |
| DOI | 10.1121/1.5016044 |
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| Abstract | This study reconsiders the number of effective channels in contemporary cochlear implants. Subjects listened to matrix sentences with a competing talker using their clinical map (up to 22 electrodes) and reduced-channel maps using 12, 8, and 4 electrodes. Spectro-temporal modulation thresholds and reading span were measured to explore intersubject variability. Results show that speech understanding significantly improved with increasing active electrodes up to 22, particularly for subjects with better spectro-temporal resolution. These findings suggest some listeners may be able to utilize the full electrode array and may not be limited to eight channels of information as indicated in previous studies. |
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| AbstractList | This study reconsiders the number of effective channels in contemporary cochlear implants. Subjects listened to matrix sentences with a competing talker using their clinical map (up to 22 electrodes) and reduced-channel maps using 12, 8, and 4 electrodes. Spectro-temporal modulation thresholds and reading span were measured to explore intersubject variability. Results show that speech understanding significantly improved with increasing active electrodes up to 22, particularly for subjects with better spectro-temporal resolution. These findings suggest some listeners may be able to utilize the full electrode array and may not be limited to eight channels of information as indicated in previous studies. This study reconsiders the number of effective channels in contemporary cochlear implants. Subjects listened to matrix sentences with a competing talker using their clinical map (up to 22 electrodes) and reduced-channel maps using 12, 8, and 4 electrodes. Spectro-temporal modulation thresholds and reading span were measured to explore intersubject variability. Results show that speech understanding significantly improved with increasing active electrodes up to 22, particularly for subjects with better spectro-temporal resolution. These findings suggest some listeners may be able to utilize the full electrode array and may not be limited to eight channels of information as indicated in previous studies.This study reconsiders the number of effective channels in contemporary cochlear implants. Subjects listened to matrix sentences with a competing talker using their clinical map (up to 22 electrodes) and reduced-channel maps using 12, 8, and 4 electrodes. Spectro-temporal modulation thresholds and reading span were measured to explore intersubject variability. Results show that speech understanding significantly improved with increasing active electrodes up to 22, particularly for subjects with better spectro-temporal resolution. These findings suggest some listeners may be able to utilize the full electrode array and may not be limited to eight channels of information as indicated in previous studies. |
| Author | Duran, Sara I. Smith, Zachary M. Croghan, Naomi B. H. |
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| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/29289062$$D View this record in MEDLINE/PubMed |
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| References_xml | – volume: 19 start-page: 162 year: 1998 ident: 2023072103450901200_c4 article-title: The identification of consonants and vowels by cochlear implant patients using a 6-channel continuous interleaved sampling processor and by normal-hearing subjects suing simulations of processors with two to nine channels publication-title: Ear. Hear. doi: 10.1097/00003446-199804000-00008 – volume: 34 start-page: 342 year: 2013 ident: 2023072103450901200_c9 article-title: Factors affecting open-set word recognition in adults with cochlear implants publication-title: Ear. Hear. doi: 10.1097/AUD.0b013e3182741aa7 – volume: 124 start-page: 3793 year: 2008 ident: 2023072103450901200_c10 article-title: Listening to every other word: Examining the strength of linkage variables in forming steams of speech publication-title: J. Acoust. Soc. Am. doi: 10.1121/1.2998980 – volume: 32 start-page: 725 year: 1989 ident: 2023072103450901200_c13 article-title: Visual evoked potentials: Relation to adult speechreading and cognitive function publication-title: J. Speech. Hear. Res. doi: 10.1044/jshr.3204.725 – volume: 2013 start-page: 2796 year: 2013 ident: 2023072103450901200_c14 article-title: Multipolar current focusing increases spectral resolution in cochlear implants publication-title: Conf. Proc. IEEE Eng. Med. Biol. Soc. doi: 10.1109/EMBC.2013.6610121 – volume: 104 start-page: 3586 year: 1998 ident: 2023072103450901200_c7 article-title: Effects of noise and spectral resolution on vowel and consonant recognition: Acoustic and electric hearing publication-title: J. Acoust. Soc. Am. doi: 10.1121/1.423941 – volume: 110 start-page: 1150 year: 2001 ident: 2023072103450901200_c6 article-title: Speech recognition in noise as a function of the number of spectral channels: Comparison of acoustic hearing and cochlear implants publication-title: J. Acoust. Soc. Am. doi: 10.1121/1.1381538 – volume: 19 start-page: 450 year: 1980 ident: 2023072103450901200_c3 article-title: Individual differences in working memory and reading publication-title: J. Verb. Learn. Verb. Behav. doi: 10.1016/S0022-5371(80)90312-6 – volume: 42 start-page: S49 year: 2003 ident: 2023072103450901200_c12 article-title: Cognitive function in relation to hearing aid use publication-title: Int. J. Audiol. doi: 10.3109/14992020309074624 – volume: 15 start-page: 293 year: 2014 ident: 2023072103450901200_c11 article-title: Examining the electro-neural interface of cochlear implant users using psychophysics, CT scans, and speech understanding publication-title: J. Assoc. Res. Otolaryngol. doi: 10.1007/s10162-013-0437-5 – volume: 47 start-page: S53 year: 2008 ident: 2023072103450901200_c1 article-title: Are individual differences in speech reception related to individual differences in cognitive ability? A survey of twenty experimental studies with normal and hearing-impaired adults publication-title: Int. J. Audiol. doi: 10.1080/14992020802301142 – volume: 34 start-page: 251 year: 2013 ident: 2023072103450901200_c2 article-title: Working memory, age, and hearing loss: Susceptibility to hearing aid distortion publication-title: Ear. Hear. doi: 10.1097/AUD.0b013e318271aa5e – volume: 40 start-page: 1201 year: 1997 ident: 2023072103450901200_c5 article-title: Speech recognition as a function of the number of electrodes used in the SPEAK cochlear implant speech processor publication-title: J. Speech. Lang. Hear. Res. doi: 10.1044/jslhr.4005.1201 – volume: 121 start-page: 3703 year: 2007 ident: 2023072103450901200_c16 article-title: Focused intracochlear electric stimulation with phased array channels publication-title: J. Acoust. Soc. Am. doi: 10.1121/1.2722047 – volume: 28 start-page: 455 year: 1985 ident: 2023072103450901200_c15 article-title: A ‘rationalized’ arcsine transform publication-title: J. Speech. Hear. Res. doi: 10.1044/jshr.2803.455 – volume: 23 start-page: 540 year: 2002 ident: 2023072103450901200_c8 article-title: Speech understanding in noise with a Mel-El COMBI 40+ cochlear implant using reduced channel sets publication-title: Ear. Hear. doi: 10.1097/00003446-200212000-00005 – reference: 29857764 - J Acoust Soc Am. 2018 May;143(5):2621 |
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| Title | Re-examining the relationship between number of cochlear implant channels and maximal speech intelligibility |
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