Design and evaluation of a cochlear implant strategy based on a "Phantom" channel.
Unbalanced bipolar stimulation, delivered using charge balanced pulses, was used to produce "Phantom stimulation", stimulation beyond the most apical contact of a cochlear implant's electrode array. The Phantom channel was allocated audio frequencies below 300 Hz in a speech coding st...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2015-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0120148 |
| _version_ | 1819032615432224768 |
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| author | Waldo Nogueira Leonid M Litvak Aniket A Saoji Andreas Büchner |
| author_facet | Waldo Nogueira Leonid M Litvak Aniket A Saoji Andreas Büchner |
| author_sort | Waldo Nogueira |
| collection | DOAJ |
| description | Unbalanced bipolar stimulation, delivered using charge balanced pulses, was used to produce "Phantom stimulation", stimulation beyond the most apical contact of a cochlear implant's electrode array. The Phantom channel was allocated audio frequencies below 300 Hz in a speech coding strategy, conveying energy some two octaves lower than the clinical strategy and hence delivering the fundamental frequency of speech and of many musical tones. A group of 12 Advanced Bionics cochlear implant recipients took part in a chronic study investigating the fitting of the Phantom strategy and speech and music perception when using Phantom. The evaluation of speech in noise was performed immediately after fitting Phantom for the first time (Session 1) and after one month of take-home experience (Session 2). A repeated measures of analysis of variance (ANOVA) within factors strategy (Clinical, Phantom) and interaction time (Session 1, Session 2) revealed a significant effect for the interaction time and strategy. Phantom obtained a significant improvement in speech intelligibility after one month of use. Furthermore, a trend towards a better performance with Phantom (48%) with respect to F120 (37%) after 1 month of use failed to reach significance after type 1 error correction. Questionnaire results show a preference for Phantom when listening to music, likely driven by an improved balance between high and low frequencies. |
| first_indexed | 2024-12-21T07:04:46Z |
| format | Article |
| id | doaj.art-b152d3462f0a4dc48d62d2ae20af4dff |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-21T07:04:46Z |
| publishDate | 2015-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-b152d3462f0a4dc48d62d2ae20af4dff2022-12-21T19:12:08ZengPublic Library of Science (PLoS)PLoS ONE1932-62032015-01-01103e012014810.1371/journal.pone.0120148Design and evaluation of a cochlear implant strategy based on a "Phantom" channel.Waldo NogueiraLeonid M LitvakAniket A SaojiAndreas BüchnerUnbalanced bipolar stimulation, delivered using charge balanced pulses, was used to produce "Phantom stimulation", stimulation beyond the most apical contact of a cochlear implant's electrode array. The Phantom channel was allocated audio frequencies below 300 Hz in a speech coding strategy, conveying energy some two octaves lower than the clinical strategy and hence delivering the fundamental frequency of speech and of many musical tones. A group of 12 Advanced Bionics cochlear implant recipients took part in a chronic study investigating the fitting of the Phantom strategy and speech and music perception when using Phantom. The evaluation of speech in noise was performed immediately after fitting Phantom for the first time (Session 1) and after one month of take-home experience (Session 2). A repeated measures of analysis of variance (ANOVA) within factors strategy (Clinical, Phantom) and interaction time (Session 1, Session 2) revealed a significant effect for the interaction time and strategy. Phantom obtained a significant improvement in speech intelligibility after one month of use. Furthermore, a trend towards a better performance with Phantom (48%) with respect to F120 (37%) after 1 month of use failed to reach significance after type 1 error correction. Questionnaire results show a preference for Phantom when listening to music, likely driven by an improved balance between high and low frequencies.https://doi.org/10.1371/journal.pone.0120148 |
| spellingShingle | Waldo Nogueira Leonid M Litvak Aniket A Saoji Andreas Büchner Design and evaluation of a cochlear implant strategy based on a "Phantom" channel. PLoS ONE |
| title | Design and evaluation of a cochlear implant strategy based on a "Phantom" channel. |
| title_full | Design and evaluation of a cochlear implant strategy based on a "Phantom" channel. |
| title_fullStr | Design and evaluation of a cochlear implant strategy based on a "Phantom" channel. |
| title_full_unstemmed | Design and evaluation of a cochlear implant strategy based on a "Phantom" channel. |
| title_short | Design and evaluation of a cochlear implant strategy based on a "Phantom" channel. |
| title_sort | design and evaluation of a cochlear implant strategy based on a phantom channel |
| url | https://doi.org/10.1371/journal.pone.0120148 |
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