Electrical stimulus spread

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