Together with Prof. Simon Doclo (University of Oldenburg) we are organizing a session on "Audio and Neural Signal Processing for Hearing Devices" at the ICASSP 2020 conference. The ICASSP will be organized as a virtual conference this year. [session]
Within the special session we have a contribution on "Toward Decoding Selective Attention from single trial EEG in Cochlear Implant Users based on Deep Neural Networks". [paper] [code]
We published two papers in JASA about electrocochleographic (ECochG) responses in cochlear implant users with residual acoustic hearing in the same ear. We used ECochG to investigate interaction effects between electric and acoustic hearing. Part of the interactions can be expained by peripheral mechanisms at the level of the cochlea. Morevover the interaction effects seem to be similar at loud and soft levels.
Here the links to the publicationss:
Next week from Monday until Wednesday (18th-20th of November) we are organizing a mini-symposim on Neural Interfaces wihtin the ICBT2019 conference in Hannover.
During the ICBT other super interesting mini-symposiums and keynote speakers related to Auditory Implants (Prof. T. Lenarz) and Mechanics of Hearing (Prof. H. Maier) will be organized.
You are very welcome to attend! More information in the links below:
Recent advances in engineering, computing and neuroscience are contributing to novel approaches to recover human senses and to treat neurological and mental disorders as well as understanding various function of the brain. These new approaches are based on the ability to stimulate and record neural activity with increased accuracy.
New technologies including stimulation and recording devices as well as computational models permit the expansion and understanding of neural interfaces, devices that interact with the nervous system to restore or enable sensory and motor function. Examples of successful neural interfaces include cochlear implants for hearing impaired people, retinal implants for the blind, and devices for deep brain stimulation (DBS) for individuals with Parkinson’s disease, essential tremor and other motor symptoms.
This session will include review studies and novel contributions in the field of retinal, cochlear and central auditory implants, deep brain stimulation implants as well as cortical stimulation and recording devices. Bringing researchers together from different disciplines working in different applications will bring synergistic effects and offer the opportunity to learn from each other’s field.
Computational models may include:
We have a new publication (link) in our group by Marina Imsiecke investigating the interactions between electric and acoustic stimulation in cochlear implant subjects that retain residual hearing after implantation and its relation to speech outcomes. Moreover we designed a new EAS fitting map that was assessed in a chronic study in CI users.
Here the main conclusions from the study:
1) The study confirmed the interaction between
electric and acoustic stimulation in a psychoacoustic masking
(2) The overlap fitting yielded poorer speech reception performance
in stationary noise especially in subjects with strong masking.
(3) The newly developed UNMASKfit strategy yielded similar speech reception
thresholds with an enhanced acoustic benefit, while at the same
time reducing the electric stimulation. This could be beneficial in the
long-term if applied as a standard fitting, as hair cells are exposed to
less possibly adverse electric stimulation. In this study, the UNMASKfit
allowed the participants a better use of their natural hearing even after
1 month of adaptation."
Waldo Nogueira gave three talks at the Insituto Nacional de Rehabilitación during the conference "Segundo curso internacional de atención con calidad al paciente con patología audiológica y vestibular" in Mexico City.
The presentations in spanish language are listed below with corresponding links:
1) Introducción al centro alemán de la audición de Hannover; Estrategias de codificación y adaptación en implantes cocleares [pdf]
2) Evaluación de la inteligibilidad del habla con implante coclear bilateral y en pacientes bimodales [pdf]
3) Estimulación Eléctrico-Acústica: Evaluación de la inteligibilidad del habla y su relación con la interacción electrico-acústica [pdf]
We have two new journal publications on decoding selective attention for CI users from high density EEG and using a mobile cEEGrid device.
The links to the publications can be found here:
We are presenting 1 talk and four posters at the conference.
The talk is about decoding selective attention in CI users. You can find the slides here.
Posters from Tom Gajecki on Binaural NofM sound coding strategy, Benjamin Krüger on ECochG interaction, Florian Langner on automatic compression and Waldo Nogueira on contralateral masking.
Hearing4All - Innovations for DiagnosisMinisymposium
Chair: Nogueira, WaldoLeibniz Universität Hannover
Co-Chair: Büchner, AndreasHannover Medical School
Organizer: Nogueira, WaldoLeibniz Universität Hannover
Organizer: Büchner, AndreasHannover Medical School
10:30-10:45, Paper FrB10.1
Cognitive-Driven Binaural Speech Enhancement System for Hearing Aid Applications (I)
Aroudi, AliUniversity of Oldenburg, Dept. of Medical Physics and Acoustics
Doclo, SimonUniversity of Oldenburg
10:45-11:00, Paper FrB10.2
Individualized Electrical Stimulation Patterns with Auditory Prostheses and Closed-Loop Systems (I)
Bahmer, AndreasUniversity Clinic Würzburg
11:00-11:15, Paper FrB10.3
From Surgery to Sound Perception - Signal Processing in Cochlear Implants (I)
Koning, RaphaelAdvanced Bionics
Litvak, LeonidAdvanced Bionics
Hamacher, VolkmarAdvanced Bionics
11:15-11:30, Paper FrB10.4
Future Trends in Hearing Implants (I)
Nopp, PeterMED-EL Elektromedizinische Geraete Gesellschaft M.b.H
11:30-11:45, Paper FrB10.5
Developing Behind-The-Ear EEG Sensing for Hearing Devices (I)
Bleichner, Martin G.University of Oldenburg
Debener, StefanUniversity of Oldenburg
11:45-12:00, Paper FrB10.6
Electrochemical Protocols Upgrade Conventional Noble Metal Electrodes to Long-Term Stable Sensors at the Tissue/Electrode Interface (I)
Weltin, AndreasUniversity of Freiburg
Ganatra, DevUniversity of Freiburg
Durisin, MartinHannover Medical School
Urban, Gerald A.University of Freiburg
Kieninger, JochenUniversity of Freiburg
11:45-12:00, Paper FrB10.7
Next Generation Cochlear Implants Require Microsecond Binaural Synchronization (I)
Rosskothen-Kuhl, NicoleUniversity Medical Center Freiburg,
Hofmann, Ulrich G.University of Freiburg
Rotter, StefanUniversity of Freiburg, Bernstein Center Freiburg & Faculty of B
Kral, AndrejHannover Medical School, Institute of AudioNeuroTechnology and D
Hubka, PeterHannover Medical School, Institute of AudioNeuroTechnology and D
Schnupp, Jan W., City University of Hong Kong, Department of Biomedical Science
11:45-12:00, Paper FrB10.8
New Electrical and Ultrasound Stimulation Technologies for Treating Hearing Disorders and Tinnitus (I)
Lim, Hubert, University of Minnesota
The auditory brainstem response (ABR) is an auditory evoked potential that can be recorded with electrodes placed on the scalp. Juan Pablo Marcoleta, a PhD candidate at MHH, developed a board to record ABR and Waldo Nogueira contributed with code to perform the recording of the different waves contained in the ABR. These waves include Wave I-III generated from the auditory nerve, cochlear nucleus and superior olivary complex of the brainstem and waves IV and V from the upper brainstem. We were doing some preliminary tests at the APG to assess the possibilities of this self developed ABR system.
Waldo Nogueira will give a talk followed by a discussion at the Ex-Designer in Barcelona (Entença 3, 08015-Barcelona) tomorrow Wendesday at 21:00 on "Cochlear Implants: The Hearing Device of the Future. This event has been organized by l'ullcec, more information here: