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- W4228999278 abstract "Objective.Intraneural nerve interfaces often operate in a monopolar configuration with a common and distant ground electrode. This configuration leads to a wide spreading of the electric field. Therefore, this approach is suboptimal for intraneural nerve interfaces when selective stimulation is required.Approach.We designed a multilayer electrode array embedding three-dimensional concentric bipolar (CB) electrodes. First, we validated the higher stimulation selectivity of this new electrode array compared to classical monopolar stimulation using simulations. Next, we compared themin-vivoby intraneural stimulation of the rabbit optic nerve and recording evoked potentials in the primary visual cortex.Main results.Simulations showed that three-dimensional CB electrodes provide a high localisation of the electric field in the tissue so that electrodes are electrically independent even for high electrode density. Experimentsin-vivohighlighted that this configuration restricts spatial activation in the visual cortex due to the fewer fibres activated by the electric stimulus in the nerve.Significance.Highly focused electric stimulation is crucial to achieving high selectivity in fibre activation. The multilayer array embedding three-dimensional CB electrodes improves selectivity in optic nerve stimulation. This approach is suitable for other neural applications, including bioelectronic medicine." @default.
- W4228999278 created "2022-05-08" @default.
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- W4228999278 date "2022-05-27" @default.
- W4228999278 modified "2023-09-30" @default.
- W4228999278 title "Three-dimensional multilayer concentric bipolar electrodes restrict spatial activation in optic nerve stimulation" @default.
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- W4228999278 doi "https://doi.org/10.1088/1741-2552/ac6d7e" @default.
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