Signal processing for auditory implants

The group is working on the development of signal processing strategies for cochlear implants. Depending on the manufacturer, 12 to 22 intracochlear electrode contacts of the cochlear implant electrically stimulate the auditory nerve to cause a hearing sensation in CI patients. The electrodes are activated in rapid succession several hundred to a thousand times a second. The composition of these intracochlear stimulation patterns, which are calculated by signal processing strategies, determines the auditory impression of the CI patient.


  • Signal processing for cochlear implants
  • Measurement of auditory evoked potentials with intracochlear electrodes (cochlear microphonics, summing potential, compound action potential)
  • Measurement of electrically evoked potentials (EEG)
  • Objectification of hearing with objective measurement methods
  • Sound localization and binaural processing of auditory psychophysics

The group is working on the development of signal processing strategies for cochlear implants. Depending on the manufacturer, 12 to 22 intracochlear electrode contacts of the cochlear implant electrically stimulate the auditory nerve to cause a hearing sensation in CI patients. The electrodes are activated in rapid succession several hundred to a thousand times a second. The composition of these intracochlear stimulation patterns, which are calculated by signal processing strategies, determines the auditory impression of the CI patient.

This results in the following main topics:

Development of binaural stimulation strategies for cochlear implants
with the aim of improving limited directional hearing in patients with bilateral cochlear implants. Evaluation of the strategies in an anechoic chamber with a lower cut-off frequency of 90 Hz using a fixed localization sound system.

Use of high-resolution EEG systems
(128 channels, sampling rate 20,000 Hz) for objectification of auditory impressions in CI patients (frequency, loudness and temporal resolution).

Algorithm development and evaluation

for noise reduction and beamforming to improve the signal-to-noise ratio in different listening environments to improve the hearing of CI patients.

Develop automated fitting procedures based on objective measurements and patient feedback.

Prof. Dr. Dipl.-Inform.
Andreas Buechner
Michael Bardt
Hanna Bönitz
Alexey Demyanchuk
Dr. rer.biol.hum.
Karl-Heinz Dyballa
Claudia Goetze
Annette Günther
Sven Kliesch
Dr. rer. nat
Eugene Kludt
Post Doc
Benjamin Kruger
PhD student
Dr. rer. nat
Timo Leinemann
Anna Rest
Mark Schuessler
Tobias Weller
Post Doc



How Do We Allocate Our Resources When Listening and Memorizing Speech in Noise? A Pupillometry Study Bönitz H, Lunner T, Finke M, Fiedler L, Lyxell B, Riis SK, Ng E, Valdes AL, Büchner A, Wendt D. Ear Hear. 2021 Jan 22. doi: 10.1097/AUD.00000000001002. online ahead of print.


Amplitude growth of intracochlear electrocochleography in cochlear implant users with residual hearing Krüger B, Büchner A, Lenarz T,Nogueira W. J Acoust Soc Am. 2020 Feb;147(2):1147. doi: 10.1121/10.0000744.

Case report of the first patient with electro-mechanical stimulation of the inner ear: The Vibrant Soundbridge combined with a FLEX20 cochlear implant Salcher RB, Schmidtheisler M, Büchner A, Giere T, Zimmermann D, Busch S, Timm ME, Maier H, Lenarz T. Otolaryngology Case Reports Volume 16, September 2020, 100182,

Causes of congenital hearing loss and cochlear implant outcome Landgraf C, von Hardenberg S, Lesinski-Schiedat A, Büchner A, Schlegelberger B, Auber B. European Journal of Human Genetics volume 28, pages141-797(2020).

Combined Brain-Perfusion SPECT and EEG Measurements Suggest Distinct Strategies for Speech Comprehension in CI Users With Higher and Lower Performance Kessler M, Schierholz I, Mamach M, Wilke F, Hahne A, Büchner A Geworski L, Bengel FM, Sandmann P, Berding G. Front Neurosci. 2020 Aug 11;14:787. doi: 10.3389/fnins.2020.00787. eCollection 2020.


Do Impedance Changes Correlate With a Delayed Hearing Loss After Hybrid L24 Implantation? Konrad S, Framke T, Kludt E, Büchner A, Lenarz T, Paasche G. Ear Hear. 2020 Aug 3;42(1):163-172. doi: 10.1097/AUD.0000000000000914.

Effect of Electrode to Modiolus Distance on Electrophysiological and Psychophysical Parameters in CI Patients With Perimodiolar and Lateral Electrode Arrays Krüger B, Büchner A, Lenarz T, Nogueira W. Otol Neurotol. 2020 Oct;41(9):e1091-e1097. doi: 10.1097/MAO.0000000000002751.

Evaluation of an Adaptive Dynamic Compensation System in Cochlear Implant Listeners Langner F, Büchner A, Nogueira, W. Trends Hear. Jan-Dec 2020;24:2331216520970349. doi: 10.1177/2331216520970349.

Randomized placebo-controlled clinical trial investigating the effect of antioxidants and a vasodilator on overall safety and residual hearing preservation in cochlear implant patients Scheper V, Schmidtheisler M, Lasch F, von der Leyen H, Koch A, Schwieger J, Büchner A, Lesinski-Schiedat A, Lenarz T. Trials. 2020 Jul 14;21(1):643. doi: 10.1186/s13063-020-04522-9.

Hearing Preservation With a New Atraumatic Lateral Wall Electrode Lenarz T, Büchner A, Lesinski-Schiedat A, Timm M, Salcher R. Otol Neurotol. 2020 Sep;41(8):e993-e1003. doi: 10.1097/MAO.0000000000002714.

Hidden Electrode Failure in a Cochlear Implant User Gärtner L, Büchner A, Illg A, Lenarz, T. Laryngoscope. 2021 Apr;131(4):E1275-E1278. doi: 10.1002/lary.29023. epub 2020 Aug 15.

Impedance Values Do Not Correlate With Speech Understanding in Cochlear Implant Recipients Prenzler NK, Weller T, Steffens M, Lesinski-Schiedat A, Büchner A, Lenarz, T, Warnecke A. Otol Neurotol. 2020 Sep;41(8):e1029-e1034. doi: 10.1097/MAO.0000000000002743.

Interaction Between Electric and Acoustic Stimulation Influences Speech Perception in Ipsilateral EAS Users Imsiecke M, Krüger B, Büchner A, Lenarz T, Nogueira W. Ear Hear. Jul/Aug 2020;41(4):868-882. doi: 10.1097/AUD.0000000000000807.

Perception and prediction of loudness in sound coding strategies using simultaneous electrical stimulation Langner F, McKay CM, Büchner, A., Nogueira, W. Hear Res. 2020 Dec;398:108091. doi: 10.1016/j.heares.2020.108091. epub 2020 Oct 2.

Psychoacoustic and electrophysiological electric-acoustic interaction effects in cochlear implant users with ipsilateral residual hearing. Imsiecke M, Büchner A, Lenarz T, Nogueira W. Hear Res. 2020 Feb;386:107873. doi: 10.1016/j.heares.2019.107873. epub 2019 Dec 18.

Speech understanding and listening effort in cochlear implant users - microphone beamformers lead to significant improvements in noisy environments. Büchner A, Schwebs M, Lenarz T. Cochlear Implants Int. 2020 Jan;21(1):1-8. doi: 10.1080/14670100.2019.1661567. epub 2019 Oct 7.

Toward Decoding Selective Attention From Single-Trial EEG Data in Cochlear Implant Users. Nogueira W, Cosatti G, Schierholz I, Egger M, Mirkovic B, Büchner A. IEEE Trans Biomed Eng. 2020 Jan;67(1):38-49. doi: 10.1109/TBME.2019.2907638. epub 2019 Mar 26.

Electric-acoustic interaction measurements in cochlear-implant users with ipsilateral residual hearing using electrocochleography. Krüger B, Büchner A, Lenarz T, Nogueira W. J Acoust Soc Am. 2020 Jan;147(1):350. doi: 10.1121/10.0000577.


Interaction Between Electric and Acoustic Stimulation Influences Speech Perception in Ipsilateral EAS Users. Imsiecke M, Krüger B, Büchner A, Lenarz T, Nogueira W. Ear Hear. 2019 Oct 7. doi: 10.1097/AUD.00000000000807. [Epub ahead of print].

Decoding Selective Attention in Normal Hearing Listeners and Bilateral Cochlear Implant Users With Concealed Ear EEG. Nogueira W, Dolhopiatenko H, Schierholz I, Büchner A, Mirkovic B, Bleichner MG, Debener S. Front Neurosci. 2019 Jul 18;13:720. doi: 10.3389/fnins.2019.00720. eCollection 2019.

Introducing real-life listening features into the clinical test environment: Part II: Measuring the hearing performance and evaluating the listening effort of individuals with a hearing implant. Bräcker T, Hellmiss S, Batsoulis C, Petzold T, Gabel L, Möltner A, Stöver T, Mlynski R, Lenarz T, Büchner A. Cochlear Implants Int. 2019 Jul;20(4):165-175. doi: 10.1080/14670100.2019.1579980. epub 2019 Mar 17.

Contralateral suppression of human hearing sensitivity in single-sided deaf cochlear implant users. Nogueira W, Krüger B, Büchner A, Lopez-Poveda E. Hear Res. 2019 Mar 1;373:121-129. doi: 10.1016/j.heares.2018.06.001. Epub 2018 Jun 15.

Individual Hearing Preservation Cochlear Implantation Using the Concept of Partial Insertion. Lenarz T, Timm ME, Salcher R, Büchner A. Otol Neurotol. 2019 Mar;40(3):e326-e335. doi: 10.1097/MAO.0000000000002127.

The Optimal inter-implant interval in pediatric sequential bilateral implantation. Illg A, Sandner C, Büchner A, Lenarz T, Kral A, Lesinski-Schiedat A. Hear Res. 2019 Feb;372:80-87. doi: 10.1016/j.heares.2017.10.010. Epub 2017 Oct 31.

Monitoring of the Inner Ear Function During and After Cochlear Implant Insertion Using Electrocochleography. Haumann S, Imsiecke M, Bauernfeind G, Büchner A, Helmstaedter V, Lenarz T, Salcher RB. Trends Hear. 2019 Jan-Dec;23:2331216519833567. doi: 10.1177/2331216519833567.


Patient specific selection of lateral wall cochlear implant electrodes based on anatomical indication ranges. Timm ME, Majdani O, Weller T, Windeler M, Lenarz T, Büchner A, Salcher RB. PLoS One. 2018 Oct 26;13(10):e0206435. doi: 10.1371/journal.pone.0206435. eCollection 2018.

Fine-grain recordings of the electrically evoked compound action potential amplitude growth function in cochlear implant recipients. Gärtner L, Lenarz T, Büchner A. Biomed Eng Online. 2018 Oct 19;17(1):140. doi: 10.1186/s12938-018-0588-z.

Electric-acoustic forward masking in cochlear implant users with ipsilateral residual hearing. Imsiecke M, Krüger B, Büchner A, Lenarz T, Nogueira W. Hear Res. 2018 Jul;364:25-37. doi: 10.1016/j.heares.2018.04.003. Epub 2018 Apr 9.

The effects of electrical field spatial spread and some cognitive factors on speech-in-noise performance of individual cochlear implant users-A computer model study. Jürgens T, Hohmann V, Büchner A, Nogueira W. Hear Res. 2018 Mar;359:64-75. doi: 10.1016/j.heares.2017.12.019. Epub 2017 Dec 28.

Perceptual changes with monopolar and phantom electrode stimulation. Klawitter S, Landsberger DM, Büchner A, Nogueira W. PLoS One. 2018 Apr 13;13(4):e0193842. doi: 10.1371/journal.pone.0193842. eCollection 2018.

Feasibility of 15O-water PET studies of auditory system activation during general anesthesia in children. Mamach M, Wilke F, Durisin M, Beger FA, Finke M, Büchner A, Schultz B, Schultz A, Geworski L, Bengel FM, Lenarz T, Lesinski-Schiedat A, Berding G. EJNMMI Res. 2018 Feb 5;8(1):11. doi: 10.1186/s13550-018-0362-z.

Event-related neuronal responses to acoustic novelty in single-sided deaf cochlear implant users: Initial findings. Bönitz H, Kopp B, Büchner A, Lunner T, Lyxell B, Finke M. Clin Neurophysiol. 2018 Jan;129(1):133-142. doi: 10.1016/j.clinph.2017.10.025. Epub 2017 Nov 7.


Multisensory emotion perception in congenitally, early, and late deaf CI users. Fengler I, Nava E, Villwock AK, Büchner A, Lenarz T, Röder B. PLoS ONE. 2017 Oct;12(10):e0185821. doi: 10.1371/journal.pone.0185821.

Long-Term Outcomes, Education, and Occupational Level in Cochlear Implant Recipients Who Were Implanted in Childhood. Illg A, Haack M, Lesinski-Schiedat A, Büchner A, Lenarz T. Ear Hear. 2017 Sep/Oct;38(5):577-587. doi: 10.1097/AUD.0000000000000423.

Simultaneous masking between electric and acoustic stimulation in cochlear implant users with residual low-frequency hearing. Krüger B, Büchner A, Nogueira W. Hear Res. 2017 Jun 30. pii: S0378-5955(17)30042-4. doi: 10.1016/j.heares.2017.06.014. [Epub ahead of print].

Investigation of the effect of cochlear implant electrode length on speech comprehension in quiet and noise compared with the results with users of electro-acoustic-stimulation, a retrospective analysis. Büchner A, Illg A, Majdani O, Lenarz T. PLoS One. 2017 May 15;12(5):e0174900. doi: 10.1371/journal.pone.0174900.

Speech intelligibility and subjective benefit in single-sided deaf adults after cochlear implantation. Finke M, Strauß-Schier A, Kludt E, Büchner A, Illg A. Hear Res. 2017 May;348:112-119. doi: 10.1016/j.heares.2017.03.002. Epub 2017 Mar 10.

Technical advancements in cochlear implants : state of the art technical developments in cochlear implants Büchner A, Gärtner L. ENT. 2017 Apr;65(4):276-289. doi: 10.1007/s00106-017-0339-7. German.

Auditory and audio-visual processing in patients with cochlear, auditory brainstem, and auditory midbrain implants: An EEG study. Schierholz I, Finke M, Kral A, Büchner A, Rach S, Lenarz T, Dengler R, Sandmann P. Hum Brain Mapp. 2017 Apr;38(4):2206-2225. doi: 10.1002/hbm.23515.

Toward Automated Cochlear Implant Fitting Procedures Based on Event-Related Potentials. Finke M, Billinger M, Büchner A. Ear Hear. 2017 Mar/Apr;38(2):e118-e127. doi: 10.1097/AUD.0000000000000377.

Off the ear with no loss in speech understanding: comparing the RONDO and the OPUS 2 cochlear implant audio processors. Dazert S, Thomas JP, Büchner A, Müller J, Hempel JM, Löwenheim H, Mlynski R. Eur Arch Otorhinolaryngol. 2017 Mar;274(3):1391-1395. doi: 10.1007/s00405-016-4400-z.

Adding simultaneous stimulating channels to reduce power consumption in cochlear implants. Langner F, Saoji AA, Büchner A, Nogueira W. Hear Res. 2017 Mar;345:96-107. doi: 10.1016/j.heares.2017.01.010. Epub 2017 Jan 16.

Loudness and pitch perception using Dynamically Compensated Virtual Channels. Nogueira W, Litvak LM, Landsberger DM, Büchner A. Hear Res. 2017 Feb;344:223-234. doi: 10.1016/j.heares.2016.11.017. Epub 2016 Dec 7.


A physiologically-inspired model reproducing the speech intelligibility benefit in cochlear implant listeners with residual acoustic hearing. Zamaninezhad L, Hohmann V, Büchner A, Schädler MR, Jürgens T. Hear Res. 2017 Feb;344:50-61. doi: 10.1016/j.heares.2016.10.023. Epub 2016 Nov 9.

Validation of a Cochlear Implant Patient-Specific Model of the Voltage Distribution in a Clinical Setting. Nogueira W, Schurzig D, Büchner A, Penninger RT, Würfel W. Front Bioeng Biotechnol. 2016 Nov 23;4:84.eCollection 2016.

Indication of direct acoustical cochlear stimulation in comparison to cochlear implants. Kludt E, Büchner A, Schwab B, Lenarz T, Maier H. Hear Res. 2016 Oct;340:185-190. doi: 10.1016/j.heares.2016.01.016. Epub 2016 Feb 4.

The Impact of Electrode Array Length on Hearing Preservation in Cochlear Implantation. Suhling MC, Majdani O, Salcher R, Leifholz M, Büchner A, Lesinski-Schiedat A, Lenarz T. Otol Neurotol. 2016 Sep;37(8):1006-15. doi: 10.1097/MAO.0000000000001110.

On the relationship between auditory cognition and speech intelligibility in cochlear implant users: An ERP study. Finke M, Büchner A, Ruigendijk E, Meyer M, Sandmann P. Neuropsychologia. 2016 Jul 1;87:169-81. doi: 10.1016/j.neuropsychologia.2016.05.019. Epub 2016 May 19.

Survey of Cochlear Implant User Satisfaction with the Neptune™ Waterproof Sound Processor. Briaire JJ; Indian Research Group., Büchner A, Auletta G, Arroyo H, Zoilo C, Mancini P, Buhagiar R, Vaid N, Mathias N. Audiol Res. 2016 Apr 20;6(1):146. doi: 10.4081/audiores.2016.146. Epub 2016 May 19.

Spectral contrast enhancement improves speech intelligibility in noise for cochlear implants. Nogueira W, Rode T, Büchner A. J Acoust Soc Am. 2016 Feb;139(2):728-39. doi: 10.1121/1.4939896.

Optimization of a Spectral Contrast Enhancement Algorithm for Cochlear Implants Based on a Vowel Identification Model. Nogueira W, Rode T, Büchner A. Adv Exp Med Biol. 2016;894:93-104. doi: 10.1007/978-3-319-25474-6_11.

Consequences of Stimulus Type on Higher-Order Processing in Single-Sided Deaf Cochlear Implant Users. Finke M, Sandmann P, Bönitz H, Kral A, Büchner A. Audiol Neurootol. 2016;21(5):305-315. doi: 10.1159/000452123. epub 2016 Nov 19.

Enhanced audio-visual interactions in the auditory cortex of elderly cochlear-implant users. Schierholz I, Finke M, Schulte S, Hauthal N, Kantzke C, Rach S, Büchner A, Dengler R, Sandmann P. Hear Res. 2015 Oct;328:133-47. doi: 10.1016/j.heares.2015.08.009. Epub 2015 Aug 21.


Effect of Channel Envelope Synchrony on Interaural Time Difference Sensitivity in Bilateral Cochlear Implant Listeners. Francart T, Lenssen A, Büchner A, Lenarz T, Wouters J. Ear Hear. 2015 Jul-Aug;36(4):e199-206. doi: 10.1097/AUD.0000000000000152.

Evaluation of a Transient Noise Reduction Algorithm in Cochlear Implant Users. Dyballa KH, Hehrmann P, Hamacher V, Nogueira W, Lenarz T, Büchner A. Audiol Res. 2015 Jun 11;5(2):116. doi: 10.4081/audiores.2015.116. eCollection 2015 Jun 11.

Stimulating on multiple electrodes can improve temporal pitch perception. Penninger RT, Kludt E, Büchner A, Nogueira W. Int J Audiol. 2015 Jun;54(6):376-83. doi: 10.3109/14992027.2014.997313. epub 2015 Jan 29.

Cochlear implantation in children with bacterial meningitic deafness: The influence of the degree of ossification and obliteration on impedance and charge of the implant. Durisin M, Büchner A, Lesinski-Schiedat A, Bartling S, Warnecke A, Lenarz T. Cochlear Implants Int. 2015 May;16(3):147-58. doi: 10.1179/1754762814Y.00000094. epub 2014 Aug 17.

Design and evaluation of a cochlear implant strategy based on a "phantom" channel. Nogueira W, Litvak LM, Saoji AA, Büchner A. PLoS One. 2015 Mar 25;10(3):e0120148. doi: 10.1371/journal.pone.0120148. eCollection 2015.

Auditory distraction transmitted by a cochlear implant alters allocation of attentional resources. Finke M, Sandmann P, Kopp B, Lenarz T, Büchner A. Front Neurosci. 2015 Mar 5;9:68. doi: 10.3389/fnins.2015.00068. eCollection 2015.

Assessment of 'Fitting to Outcomes Expert' FOX™ with new cochlear implant users in a multi-center study. Battmer RD, Borel S, Brendel M, Büchner A, Cooper H, Fielden C, Gazibegovic D, Goetze R, Govaerts P, Kelleher K, Lenartz T, Mosnier I, Muff J, Nunn T, Vaerenberg B, Vanat Z. Cochlear Implants Int. 2015 Mar;16(2):100-9. doi: 10.1179/1754762814Y.00000093. epub 2014 Aug 12.

Speech reception threshold benefits in cochlear implant users with an adaptive beamformer in real life situations. Geißler G, Arweiler I, Hehrmann P, Lenarz T, Hamacher V, Büchner A. Cochlear Implants Int. 2015 Mar;16(2):69-76. doi: 10.1179/1754762814Y.00000088. epub 2014 Jul 3.


Evaluation of the bimodal benefit in a large cohort of cochlear implant subjects using a contralateral hearing aid. Illg A, Bojanowicz M, Lesinski-Schiedat A, Lenarz T, Büchner A. Otol Neurotol. 2014 Oct;35(9):e240-4. doi: 10.1097/MAO.0000000000000529.

Audio-tactile integration in congenitally and late deaf cochlear implant users. Nava E, Bottari D, Villwock A, Fengler I, Büchner A, Lenarz T, Röder B. PLoS One. 2014 Jun 11;9(6):e99606. doi: 10.1371/journal.pone.0099606. eCollection 2014.

Residual neural processing of musical sound features in adult cochlear implant users. Timm L, Vuust P, Brattico E, Agrawal D, Debener S, Büchner A, Dengler R, Wittfoth M. Front Hum Neurosci. 2014 Apr 3;8:181. doi: 10.3389/fnhum.2014.00181. eCollection 2014.

Hearing preservation outcomes with different cochlear implant electrodes: Nucleus® Hybrid™-L24 and Nucleus Freedom™ CI422. Jurawitz MC, Büchner A, Harpel T, Schüssler M, Majdani O, Lesinski-Schiedat A, Lenarz T. Audiol Neurootol. 2014;19(5):293-309. doi: 10.1159/000360601. epub 2014 Oct 1.

before 2013

Speech comprehension in children and adolescents after sequential bilateral cochlear implantation with long interimplant interval. Illg A, Giourgas A, Kral A, Büchner A, Lesinski-Schiedat A, Lenarz T. Otol Neurotol. 2013 Jun;34(4):682-9. doi: 10.1097/MAO.0b013e31828bb75e.

ERP evidence for the recognition of emotional prosody through simulated cochlear implant strategies. Agrawal D, Timm L, Viola FC, Debener S, Büchner A, Dengler R, Wittfoth M. BMC Neurosci. 2012 Sep 20;13:113. doi: 10.1186/1471-2202-13-113.

Indication criteria for cochlear implants and hearing aids: impact of audiological and non-audiological findings. Haumann S, Hohmann V, Meis M, Herzke T, Lenarz T, Büchner A. Audiol Res. 2012 Aug 14;2(1):e12. doi: 10.4081/audiores.2012.e12. Review. eCollection 2012 Jan 9.

Long-term performance of cochlear implants in postlingually deafened adults. Lenarz M, Sönmez H, Joseph G, Büchner A, Lenarz T. Otolaryngol Head Neck Surg. 2012 Jul;147(1):112-8. doi: 10.1177/0194599812438041. epub 2012.

Cochlear implant performance in geriatric patients. Lenarz M, Sönmez H, Joseph G, Büchner A, Lenarz T. Laryngoscope. 2012 Jun;122(6):1361-5. doi: 10.1002/lary.23232.

Effect of gender on the hearing performance of adult cochlear implant patients. Lenarz M, Sönmez H, Joseph G, Büchner A, Lenarz T. Laryngoscope. 2012 May;122(5):1126-9. doi: 10.1002/lary.23214.

Benefits of the HiRes 120 coding strategy combined with the Harmony processor in an adult European multicentre study. Büchner A, Lenarz T, Boermans PP, Frijns JH, Mancini P, Filipo R, Fielden C, Cooper H, Eklöf M, Freijd A, Lombaard S, Meerton L, Pickerill M, Vanat Z, Wesarg T, Aschendorff A, Kienast B, Boyle P, Arnold L, Meyer B, Sterkers O, Müller-Deile J, Ambrosch P, Helbig S, Frachet B, Gallego S, Truy E, Jeffs E, Morant A, Marco J. Acta Otolaryngol. 2012 Feb;132(2):179-87. doi: 10.3109/00016489.2011.630015.

Temporal feature perception in cochlear implant users. Timm L, Agrawal D, C Viola F, Sandmann P, Debener S, Büchner A, Dengler R, Wittfoth M. PLoS One. 2012;7(9):e45375. doi: 10.1371/journal.pone.0045375.

Effect of technological advances on cochlear implant performance in adults. Lenarz M, Joseph G, Sönmez H, Büchner A, Lenarz T. Laryngoscope. 2011 Dec;121(12):2634-40. doi: 10.1002/lary.22377.

Binaural unmasking of multi-channel stimuli in bilateral cochlear implant users. Van Deun L, van Wieringen A, Francart T, Büchner A, Lenarz T, Wouters J. J Assoc Res Otolaryngol. 2011 Oct;12(5):659-70. doi: 10.1007/s10162-011-0275-2.

Epidemiologic evidence of barometric pressure changes inducing increased reporting of oral pain. Kloss-Brandstätter A, Hächl O, Leitgeb PC, Büchner A, Coassin S, Rasse M, Kronenberg F, Kloss FR. Eur J Pain. 2011 Sep;15(8):880-4. doi: 10.1016/j.ejpain.2011.01.013.

Clinical use of a system for the automated recording and analysis of electrically evoked compound action potentials (ECAPs) in cochlear implant patients. Gärtner L, Lenarz T, Joseph G, Büchner A. Acta Otolaryngol. 2010 Jun;130(6):724-32. doi: 10.3109/00016480903380539.

European adult multi-centre HiRes® 120 study--an update on 65 subjects. Ambrosch P, Müller-Deile J, Aschendorff A, Laszig R, Boermans PP, Frijns J, Boyle P, Kienast B, Büchner A, Lenarz T, Cooper H, Fielden C, Eklöf M, Freijd A, Filipo R, Mancini P, Frachet B, Gallego S, Truy E, Helbig S, Jeffs E, Lombaard S, Meerton L, Marco J, Morant A, Meyer B, Pickerill M, Vanat Z, Sterkers O. Cochlear Implants Int. 2010 Jun;11 Suppl 1:406-11. doi: 10.1179/146701010X12671177204183. No abstract available.

Speech perception with cochlear implants as measured using a roving-level adaptive test method. Haumann S, Lenarz T, Büchner A. ORL J Otorhinolaryngol Relat Spec. 2010;72(6):312-8. doi: 10.1159/000318872.

Comparison of dual-time-constant and fast-acting automatic gain control (AGC) systems in cochlear implants. Boyle PJ, Buechner A, Stone MA, Lenarz T, Moore BC. Int J Audiol. 2009 Apr;48(4):211-21. doi: 10.1080/14992020802581982.

Results from a psychoacoustic model-based strategy for the nucleus-24 and freedom cochlear implants. Büchner A, Nogueira W, Edler B, Battmer RD, Lenarz T. Otol Neurotol. 2008 Feb;29(2):189-92. doi: 10.1097/mao.0b013e318162512c.


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CI signal processing, eCAP, EEG, auditory psychophysics.

Prof. Dr. Dipl.-Inform. Andreas Büchner


German Hearing Center Hanover
Karl-Wiechert-Allee 3
30625 Hanover


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Research focus II: IT-supported diagnosis and rehabilitation it-supported-diagnosis-and-rehabilitation

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Initiative Wissenschaften Hannover - Hearing4all - Excellent Hearing Research - Interview: Prof. Dr. Andreas Büchner, Jun. Prof. Dr. Waldo Nogueira (Source: Madsack Medienagentur)

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