Jiang, D;
Demosthenous, A;
(2018)
A Multichannel High-Frequency Power-Isolated Neural Stimulator With Crosstalk Reduction.
IEEE Transactions on Biomedical Circuits and Systems
, 12
(4)
pp. 940-953.
10.1109/TBCAS.2018.2832541.
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Abstract
In neuroprostheses applications requiring simultaneous stimulations on a multielectrode array, electric crosstalk, the spatial interaction between electric fields from various electrodes is a major limitation to the performance of multichannel stimulation. This paper presents a multichannel stimulator design that combines high-frequency current stimulation (using biphasic charge-balanced chopped pulse profile) with a switched-capacitor power isolation method. The approach minimizes crosstalk and is particularly suitable for fully integrated realization. A stimulator fabricated in a 0.6 & #x03BC;m CMOS high-voltage technology is presented. It is used to implement a multichannel, high-frequency, power-isolated stimulator. Crosstalk reduction is demonstrated with electrodes in physiological media while the efficacy of the high-frequency stimulator chip is proven in vivo. The stimulator provides fully independent operation on multiple channels and full flexibility in the design of neural modulation protocols.
| Type: | Article |
|---|---|
| Title: | A Multichannel High-Frequency Power-Isolated Neural Stimulator With Crosstalk Reduction |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TBCAS.2018.2832541 |
| Publisher version: | http://dx.doi.org/10.1109/TBCAS.2018.2832541 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/ |
| Keywords: | Chopped pulse, electric crosstalk, mixed-signal integrated circuit, multichannel neural stimulator, power isolation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10049968 |
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