cochlear implants

An Instrumented Cochlea Model for the Evaluation of Cochlear Implant Electrical Stimulus Spread

Author(s): Chen Jiang, Shreya Singhal, Tom Landry, Iwan V. Roberts, Simone R. de Rijk, Tim Brochier, Tobias Goehring, Yu Chuen Tan, Robert P. Carlyon, George G. Malliaras, Manohar L. Bance
An Instrumented Cochlea Model for the Evaluation of Cochlear Implant Electrical Stimulus Spread 170 177 IEEE Transactions on Biomedical Engineering (TBME)
A 3D-printed physical cochlea model with integrated sensing wires is presented, to evaluate the stimulation current spread of a cochlear implant (CI) in a cochlea. These wires are independent from the stimulating electrodes of a CI. Therefore, the measured current spread signals are not influenced by electrode-electrolyte interface potential near the CI, which is an important issue for conventional measurements that causes missing information in current spread distribution in a cochlea. This physical cochlea model provides an objective platform for comparing different CIs, as well as different stimulation modes and configurations, thus potentially offering optimized setup for specific CI patients. read more

Effect of Tissue Heterogeneity on the Transmembrane Potential of Type-1 Spiral Ganglion Neurons: A Simulation Study

Author(s): Kiran K Sriperumbudur, Hans Wilhelm Pau, Ursula van Rienen
Effect of Tissue Heterogeneity on the Transmembrane Potential of Type-1 Spiral Ganglion Neurons: A Simulation Study 170 177 IEEE Transactions on Biomedical Engineering (TBME)

Electric field applied by cochlear implants stimulates the intact type-1 spiral ganglion neurons (SGNs) in the Rosenthal’s canal of the human cochlea. As a result, transmembrane potential of the SGNs…

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Development and Validation of a High Fidelity Finite Element Model of Monopolar Stimulation in the Implanted Guinea Pig Cochlea

Author(s): Paul Wong, Shefin George, Phillip Tran, Andrian Sue, Paul Carter, Qing Li
Development and Validation of a High Fidelity Finite Element Model of Monopolar Stimulation in the Implanted Guinea Pig Cochlea 170 177 IEEE Transactions on Biomedical Engineering (TBME)

Paul Wong, Shefin George, Phillip Tran,  Andrian Sue, Paul Carter, and Qing Li, The University of Sydney, The Bionics Institute, Cochlear Limited, Australia Electroanatomical models are a promising means for furthering…

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