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. 2016 Jun 10;10:58. doi: 10.3389/fncom.2016.00058

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Copyright © 2016 Teplitzky, Zitella, Xiao and Johnson.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Multi-cathode, non-uniform current shifting of the CoM. Monopolar stimulation currents uniformly split across an increasing number of radial electrodes using DBSA–e8–h1.5 compared to monopolar stimulation non-uniformly split across electrodes using DBSA–e4–h1.5 (A). Non-uniform configurations using DBSA–e4–h1.5 resulted in improved shifting resolution in comparison to uniform configurations using DBSA–e8–h1.5 (B). Aspect ratio profile was similar for the two strategies but was shifted for non-uniform current shifting indicating more circular RoAs were generated from non-uniform shifting (C).