Journal article
Creating virtual electrodes with 2D current steering
TC Spencer, JB Fallon, MN Shivdasani
Journal of Neural Engineering | IOP PUBLISHING LTD | Published : 2018
Abstract
Objective. Current steering techniques have shown promise in retinal prostheses as a way to increase the number of distinct percepts elicitable without increasing the number of implanted electrodes. Previously, it has been shown that 'virtual' electrodes can be created between simultaneously stimulated electrode pairs, producing unique cortical response patterns. This study investigated whether virtual electrodes could be created using 2D current steering, and whether these virtual electrodes can produce cortical responses with predictable spatial characteristics. Approach. Normally-sighted eyes of seven adult anaesthetised cats were implanted with a 42-channel electrode array in the suprach..
View full abstractGrants
Awarded by National Health and Medical Research Council
Funding Acknowledgements
The authors wish to thank Stephanie Epp, Ceara McGowan, Ali Almasi, Felix Aplin, Kerry Halupka, Faith Lamont, Rodney Millard, Alison Neil, Alexia Saunders, Evgeni Sergeev, Dimitra Stathopoulos, Patrick Thien, and Sam Titchener for assistance. Also, thanks to Penny Allen and Chi Luu for implanting the suprachoroidal device. Funding for this research was provided by the National Health and Medical Research Council (NHMRC) Project Grant #1063093 and the Bart Reardon PhD Scholarship. The Bionics Institute acknowledges the support it receives from the Victorian Government through its Operational Infrastructure Support Program.