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Cochlear Implants International
An Interdisciplinary Journal for Implantable Hearing Devices
Volume 15, 2014 - Issue 4
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Original research papers

Impedance changes in chronically implanted and stimulated cochlear implant electrodes

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Read on this site (10)

K. R. Meghanadh, Udit Saxena, S. B. Rathna Kumar, Gish Chacko, Vikas N, Sandhra S & Gunjan Mehta. (2023) Electrode impedances in children with cochlear implants: Comparison between intra-operative Switch ON and post-operative Switch ON. Cochlear Implants International 24:2, pages 65-72.
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Aniket A. Saoji, Madison Graham, Amy Stein & Kanthaiah Koka. (2022) Analysis of electrode impedance and its subcomponents for lateral wall, mid-scala, and perimodiolar electrodes in cochlear implants. Cochlear Implants International 23:2, pages 87-94.
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Francesca Atturo, Ginevra Portanova, Francesca Yoshie Russo, Daniele De Seta, Laura Mariani, Stephanie Borel, Antonio Greco, Isabelle Mosnier & Patrizia Mancini. (2022) Cochlear implant in immune mediated inner ear diseases: Impedance variations and clinical outcomes. Cochlear Implants International 23:2, pages 70-79.
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Aniket A. Saoji, Weston J. Adkins, Amy P. Olund, Madison Graham, Neil S. Patel, Brian A. Neff, Matthew L. Carlson & Colin L. W. Driscoll. (2020) Increase in cochlear implant electrode impedances with the use of electrical stimulation. International Journal of Audiology 59:11, pages 881-888.
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Karina Needham, Dimitra Stathopoulos, Carrie Newbold, Jason Leavens, Frank Risi, Shahram Manouchehri, Irfan Durmo & Robert Cowan. (2020) Electrode impedance changes after implantation of a dexamethasone-eluting intracochlear array. Cochlear Implants International 21:2, pages 98-109.
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Maria Zinfollino, Christel Cariddi, Adriana Ardito, Mara Casulli, Paolo Malerba & Nicola Quaranta. (2020) Long-term evolution of the electrical stimulation for cochlear implant adult patients. The role of a progressive adaptation method. Acta Oto-Laryngologica 140:2, pages 122-127.
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Xiao Liu, Lulu Xie, Yunxiu Wang & Beibei Yang. (2019) Lower initial electrode impedances in minimally invasive cochlear implantation. Acta Oto-Laryngologica 139:5, pages 389-395.
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F Christov, MB Gluth, SJ Lahti, S Ludwig, S Hans, LC Holtmann, S Lang & D Arweiler-Harbeck. (2019) Electric compound action potentials (ECAPs) and impedances in an open and closed operative site during cochlear implantation. Cochlear Implants International 20:1, pages 23-30.
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Ping Gu, Yi Jiang, Xue Gao, Shasha Huang, Yongyi Yuan, Guojian Wang, Beicheng Li, Xin Xi & Pu Dai. (2016) Effects of cochlear implant surgical technique on post-operative electrode impedance. Acta Oto-Laryngologica 136:7, pages 677-681.
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Articles from other publishers (44)

Lieber Po-Hung Li. (2023) Electrophysiological status indexed by early changes in impedance after cochlear implantation: A literature review. Journal of the Chinese Medical Association 86:12, pages 1041-1045.
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Kanchan Tadke & Pradyumna Singh. (2023) Cochlear Implant Insertion Routes and Intra-operative Electrophysiological Measurements: A Retrospective Analysis at a Tertiary Care Centre. Indian Journal of Otolaryngology and Head & Neck Surgery.
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Luise Wagner, Stefan K. Plontke & Torsten Rahne. (2023) An analysis of the spread of electric field within the cochlea for different devices including custom-made electrodes for subtotal cochleoectomy. PLOS ONE 18:9, pages e0287216.
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Asma Alahmadi, Yassin Abdelsamad, Noura I. Alothman, Afrah Alshalan, Fida Almuhawas, Nouf A. AlAmari, Mohammed Y. Alyousef, Salman F. Alhabib & Abdulrahman Hagr. (2023) A Literature Review on Cochlear Implant Activation: From Weeks to Hours. Ear, Nose & Throat Journal.
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Afrah Alshalan, Yassin Abdelsamad, Medhat Yousef, Asma Alahmadi, Fida Almuhawas & Abdulrahman Hagr. (2023) Early activation after cochlear implantation: a systematic review. European Archives of Oto-Rhino-Laryngology 280:8, pages 3489-3502.
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Zuzanna Łukaszewicz-Moszyńska, Katarzyna Iwanicka-Pronicka, Magdalena Lachowska, Agnieszka Pastuszka & Kazimierz Niemczyk. (2023) Bilateral sequential cochlear implantation in a patient with the CAPOS syndrome – postsynaptic auditory neuropathy related toa missense mutation within the ATP1A3 gene. Polski Przegląd Otorynolaryngologiczny 12:2, pages 46-54.
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Simone R. de Rijk, Alexander J. Boys, Iwan V. Roberts, Chen Jiang, Charlotte Garcia, Róisín M. Owens & Manohar Bance. (2023) Tissue‐Engineered Cochlear Fibrosis Model Links Complex Impedance to Fibrosis Formation for Cochlear Implant Patients. Advanced Healthcare Materials.
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Jonathon R. Kirk, Daniel Smyth & Wolfram F. Dueck. (2023) A new paradigm of hearing loss and preservation with cochlear implants: Learnings from fundamental studies and clinical research. Hearing Research 433, pages 108769.
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Lutz Gärtner & Thomas Lenarz. (2022) Advanced Bionics HiRes Ultra and Ultra 3D Series Cochlear Implant Recall: Time Course of Anomalies . The Laryngoscope 132:12, pages 2484-2490.
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Julia Anna Christine Hoffmann, Athanasia Warnecke, Max Eike Timm, Eugen Kludt, Nils Kristian Prenzler, Lutz Gärtner, Thomas Lenarz & Rolf Benedikt Salcher. (2022) Cochlear Implantation in Obliterated Cochlea: A Retrospective Analysis and Comparison between the IES Stiff Custom-Made Device and the Split-Array and Regular Electrodes. Journal of Clinical Medicine 11:20, pages 6090.
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Cache Pitt, Naveen K. Nagaraj & Anna Salisbury. (2022) Electrode Impedance Fluctuations and Sudden Decline in Cochlear-Implant Benefit. Otology & Neurotology 43:9, pages e1008-e1012.
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Enver Salkim, Majid Zamani, Dai Jiang, Shakeel R. Saeed & Andreas Demosthenous. (2022) Insertion Guidance Based on Impedance Measurements of a Cochlear Electrode Array. Frontiers in Computational Neuroscience 16.
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Samuel A. Titchener, David A. X. Nayagam, Jessica Kvansakul, Maria Kolic, Elizabeth K. Baglin, Carla J. Abbott, Myra B. McGuinness, Lauren N. Ayton, Chi D. Luu, Steven Greenstein, William G. Kentler, Mohit N. Shivdasani, Penelope J. Allen & Matthew A. Petoe. (2022) A Second-Generation (44-Channel) Suprachoroidal Retinal Prosthesis: Long-Term Observation of the Electrode–Tissue Interface. Translational Vision Science & Technology 11:6, pages 12.
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Sanghun Lee, Junggeon Park, Semin Kim, Jehyung Ok, Jung Il Yoo, Yong Sook Kim, Youngkeun Ahn, Tae-il Kim, Heung Cho Ko & Jae Young Lee. (2022) High-Performance Implantable Bioelectrodes with Immunocompatible Topography for Modulation of Macrophage Responses. ACS Nano 16:5, pages 7471-7485.
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Viral D. Tejani, Hyejin Yang, Jeong-Seo Kim, Helin Hernandez, Jacob J. Oleson, Marlan R. Hansen, Bruce J. Gantz, Paul J. Abbas & Carolyn J. Brown. (2021) Access and Polarization Electrode Impedance Changes in Electric-Acoustic Stimulation Cochlear Implant Users with Delayed Loss of Acoustic Hearing. Journal of the Association for Research in Otolaryngology 23:1, pages 95-118.
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Woongsang Sunwoo, Hyoung Won Jeon & Byung Yoon Choi. (2021) Effect of initial switch-on within 24 hours of cochlear implantation using slim modiolar electrodes. Scientific Reports 11:1.
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Andrea Corna, Poornima Ramesh, Florian Jetter, Meng-Jung Lee, Jakob H Macke & Günther Zeck. (2021) Discrimination of simple objects decoded from the output of retinal ganglion cells upon sinusoidal electrical stimulation. Journal of Neural Engineering 18:4, pages 046086.
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Robert K Shepherd, Paul M Carter, Ashley N Dalrymple, Ya Lang Enke, Andrew K Wise, Trung Nguyen, James Firth, Alex Thompson & James B Fallon. (2021) Platinum dissolution and tissue response following long-term electrical stimulation at high charge densities. Journal of Neural Engineering 18:3, pages 036021.
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Jeff Jia-Fu Wei, Tao-Hsin Tung & Lieber Po-Hung Li. (2021) Evolution of impedance values in cochlear implant patients after early switch-on. PLOS ONE 16:2, pages e0246545.
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Salman F Alhabib, Yassin Abdelsamad, Medhat Yousef, Farid Alzhrani & Abdulrahman Hagr. (2021) Effect of early activation of cochlear implant on electrode impedance in pediatric population. International Journal of Pediatric Otorhinolaryngology 140, pages 110543.
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Matias Parreño, Federico A. Di Lella, Florencia Fernandez, Carlos M. Boccio & Sebastian A. Ausili. (2020) Toward Self-Measures in Cochlear Implants: Daily and “Homemade” Impedance Assessment. Frontiers in Digital Health 2.
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Federico A. Di Lella, Matias Parreño, Florencia Fernandez, Carlos M. Boccio & Sebastián A. Ausili. (2020) Measuring the Electrical Status of the Bionic Ear. Re-thinking the Impedance in Cochlear Implants. Frontiers in Bioengineering and Biotechnology 8.
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Nils K. Prenzler, Tobias Weller, Melanie Steffens, Anke Lesinski-Schiedat, Andreas Büchner, Thomas Lenarz & Athanasia Warnecke. (2020) Impedance Values Do Not Correlate With Speech Understanding in Cochlear Implant Recipients. Otology & Neurotology 41:8, pages e1029-e1034.
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Alexander Mewes, Goetz Brademann & Matthias Hey. (2020) Comparison of Perimodiolar Electrodes: Imaging and Electrophysiological Outcomes. Otology & Neurotology 41:7, pages e934-e944.
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Lan Yue, Varalakshmi Wuyyuru, Alejandra Gonzalez-Calle, Jessy D Dorn & Mark S Humayun. (2020) Retina–electrode interface properties and vision restoration by two generations of retinal prostheses in one patient—one in each eye. Journal of Neural Engineering 17:2, pages 026020.
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Nicholas J. Thompson, Margaret T. Dillon, Emily Buss, Lisa R. Park, Harold C. Pillsbury, Brendan P. O’Connell & Kevin D. Brown. (2020) Electrode Array Type and Its Impact on Impedance Fluctuations and Loss of Residual Hearing in Cochlear Implantation. Otology & Neurotology 41:2, pages 186-191.
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Octavio Garaycochea, Raquel Manrique-Huarte, Carlos Lazaro, Alicia Huarte, Carlos Prieto, Marta Alvarez de Linera - Alperi & Manuel Manrique. (2019) Comparative study of two different perimodiolar and a straight cochlear implant electrode array: surgical and audiological outcomes. European Archives of Oto-Rhino-Laryngology 277:1, pages 69-76.
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Navid Ahmadi, Julia Clara Gausterer, Clemens Honeder, Marlene Mötz, Hanna Schöpper, Chengjing Zhu, Nodir Saidov, Franz Gabor & Christoph Arnoldner. (2019) Long-term effects and potential limits of intratympanic dexamethasone-loaded hydrogels combined with dexamethasone-eluting cochlear electrodes in a low-insertion trauma Guinea pig model. Hearing Research 384, pages 107825.
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Chuan‐Hung Sun, Chan‐Jung Chang, Chuan‐Jen Hsu & Hung‐Pin Wu. (2019) Feasibility of early activation after cochlear implantation. Clinical Otolaryngology 44:6, pages 1004-1010.
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David Po-Yi Lin, Joshua Kuang-Chao Chen, Tao-Hsin Tung & Lieber Po-Hung Li. (2019) Differences in the impedance of cochlear implant devices within 24 hours of their implantation. PLOS ONE 14:9, pages e0222711.
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Kathrin Badstübner, Marco Stubbe, Thomas Kröger, Eilhard Mix & Jan Gimsa. (2019) Impedance detection of the electrical resistivity of the wound tissue around deep brain stimulation electrodes permits registration of the encapsulation process in a rat model. Journal of Electrical Bioimpedance 8:1, pages 11-24.
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Chanan Shaul, Christofer W. Bester, Stefan Weder, June Choi, Hayden Eastwood, K.V. Padmavathi, Aaron Collins & Stephen J. O’Leary. (2019) Electrical Impedance as a Biomarker for Inner Ear Pathology Following Lateral Wall and Peri-modiolar Cochlear Implantation. Otology & Neurotology 40:5, pages e518-e526.
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Federico Alberto Di Lella, Diego De Marco, Florencia Fernández, Matías Parreño & Carlos Mario Boccio. (2019) In Vivo Real-time Remote Cochlear Implant Capacitive Impedance Measurements: A Glimpse Into the Implanted Inner Ear. Otology & Neurotology 40:5S, pages S18-S22.
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Alan P. Sanderson, Edward T. F. Rogers, Carl A. Verschuur & Tracey A. Newman. (2019) Exploiting Routine Clinical Measures to Inform Strategies for Better Hearing Performance in Cochlear Implant Users. Frontiers in Neuroscience 12.
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Merve Ozbal Batuk, Mehmet Yarali, Betul Cicek Cinar, Aysun Parlak Kocabay, Munir Demir Bajin, Gonca Sennaroglu & Levent Sennaroglu. (2019) Is Early Cochlear Implant Device Activation Safe for All on-the-Ear and off-the-Ear Sound Processors?. Audiology and Neurotology 24:6, pages 279-284.
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Mingfang Diao, Jianjun Sun, Fangjie Tian, Yili Ding & Yuqing Wang. (2018) Cochlear implant device activation after 7 days in cochlear implant recipients. European Archives of Oto-Rhino-Laryngology.
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Gunnar Lennart Quass, Simone Kurt, K. Jannis Hildebrandt & Andrej Kral. (2018) Electrical stimulation of the midbrain excites the auditory cortex asymmetrically. Brain Stimulation 11:5, pages 1161-1174.
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Marco Stubbe & Jan Gimsa. (2018) Furthering the state of knowledge on the electric properties of hemi-ellipsoidal single cells and cell patches on electrodes. Biosensors and Bioelectronics 105, pages 166-172.
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June Choi, Matthew R. Payne, Luke J. Campbell, Christo W. Bester, Carrie Newbold, Hayden Eastwood & Stephen J. O’Leary. (2017) Electrode Impedance Fluctuations as a Biomarker for Inner Ear Pathology After Cochlear Implantation. Otology & Neurotology 38:10, pages 1433-1439.
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Hao-Chun Hu, Joshua Kuang-Chao Chen, Chia-Mi Tsai, Hsing-Yi Chen, Tao-Hsin Tung & Lieber Po-Hung Li. (2017) Evolution of impedance field telemetry after one day of activation in cochlear implant recipients. PLOS ONE 12:3, pages e0173367.
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Armin Wiegner, Charles G. Wright & Maike Vollmer. (2016) Multichannel cochlear implant for selective neuronal activation and chronic use in the free-moving Mongolian gerbil. Journal of Neuroscience Methods 273, pages 40-54.
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S Meijs, M Alcaide, C S?rensen, M McDonald, S S?rensen, K Rechendorff, A Gerhardt, M Nesladek, N J M Rijkhoff & C P Pennisi. (2016) Biofouling resistance of boron-doped diamond neural stimulation electrodes is superior to titanium nitride electrodes in vivo . Journal of Neural Engineering 13:5, pages 056011.
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Maciej Wilk, Roland Hessler, Kenneth Mugridge, Claude Jolly, Michael Fehr, Thomas Lenarz & Verena Scheper. (2016) Impedance Changes and Fibrous Tissue Growth after Cochlear Implantation Are Correlated and Can Be Reduced Using a Dexamethasone Eluting Electrode. PLOS ONE 11:2, pages e0147552.
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Carrie Newbold, Andrew Farrington, Lawson Peters, Robert Cowan & Karina Needham. (2014) Electropermeabilization of Adherent Cells with Cochlear Implant Electrical Stimulation in vitro. Audiology and Neurotology 19:5, pages 283-292.
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