Journal article
Evaluation of focused multipolar stimulation for cochlear implants in acutely deafened cats
SS George, AK Wise, MN Shivdasani, RK Shepherd, JB Fallon
Journal of Neural Engineering | IOP PUBLISHING LTD | Published : 2014
Abstract
Objective. The conductive nature of the fluids and tissues of the cochlea can lead to broad activation of spiral ganglion neurons using contemporary cochlear implant stimulation configurations such as monopolar (MP) stimulation. The relatively poor spatial selectivity is thought to limit implant performance, particularly in noisy environments. Several current focusing techniques have been proposed to reduce the spread of activation with the aim towards achieving improved clinical performance. Approach. The present research evaluated the efficacy of focused multipolar (FMP) stimulation, a relatively new focusing technique in the cochlea, and compared its efficacy to both MP stimulation and tr..
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Funding Acknowledgements
This work was funded by The Garnett Passe and Rodney Williams Memorial Foundation, NHMRC and ARC. SSG was supported by an Australian Postgraduate Award through the Australian Government and a Bart Reardon Scholarship through the Bionics Institute. The Bionics Institute acknowledges the support it receives from the Victorian Government through its Operational Infrastructure Support Program. We would like to thank Philipp Senn for multi-channel stimulator engineering and support, Dexter Irvine and Sam Irving for surgical assistance, Helen Feng for electrode manufacture, Nicole Critch for animal care and Sue Pierce for veterinary advice.