An FPGA-based vision prosthesis prototype: Implementing an efficient multiplexing method for addressing electrodes

Y. T. Wong; G. J. Suaning; S. Dokos; P. J. Preston; N. Dommel; D. Grace; N. H. Lovell

An FPGA-based vision prosthesis prototype: Implementing an efficient multiplexing method for addressing electrodes

Y. T. Wong, G. J. Suaning, S. Dokos, P. J. Preston, N. Dommel, D. Grace, N. H. Lovell

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

Abstract

A prototype of an epi-retinal vision prosthesis based upon an efficient electrode addressing schema has been developed. This system has the ability to stimulate multiple electrode regions simultaneously, hence greatly improving the maximum rate of stimulation compared to many currently available neural stimulation devices based on serial stimulation protocols. To minimize the problem of cross talk between stimulating electrodes, a hexagon layout of electrodes was implemented. Basic tests were completed using a field programmable gate array logic system driving analogue circuitry to inject current into physiological saline via electrodes in hexagon arrangements and in a simple paired arrangement. The hexagon layout of electrodes was shown to clearly reduce the interaction between multiple current sources and hence cross talk.

Original language	English
Title of host publication	Proceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
Pages	5268-5271
Number of pages	4
Volume	7 VOLS
Publication status	Published - 2005
Externally published	Yes
Event	International Conference of the IEEE Engineering in Medicine and Biology Society 2005 - Shanghai, China Duration: 1 Sept 2005 → 4 Sept 2005 Conference number: 27th https://ieeexplore.ieee.org/xpl/conhome/10755/proceeding (Proceedings)

Conference

Conference	International Conference of the IEEE Engineering in Medicine and Biology Society 2005
Abbreviated title	EMBC 2005
Country/Territory	China
City	Shanghai
Period	1/09/05 → 4/09/05
Internet address	https://ieeexplore.ieee.org/xpl/conhome/10755/proceeding (Proceedings)

Keywords

Electrodes
FPGA
Vision prosthesis

Cite this

Wong, Y. T., Suaning, G. J., Dokos, S., Preston, P. J., Dommel, N., Grace, D., & Lovell, N. H. (2005). An FPGA-based vision prosthesis prototype: Implementing an efficient multiplexing method for addressing electrodes. In Proceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005 (Vol. 7 VOLS, pp. 5268-5271)

@inproceedings{e23595a6ec144399be3458db1790c904,

title = "An FPGA-based vision prosthesis prototype: Implementing an efficient multiplexing method for addressing electrodes",

abstract = "A prototype of an epi-retinal vision prosthesis based upon an efficient electrode addressing schema has been developed. This system has the ability to stimulate multiple electrode regions simultaneously, hence greatly improving the maximum rate of stimulation compared to many currently available neural stimulation devices based on serial stimulation protocols. To minimize the problem of cross talk between stimulating electrodes, a hexagon layout of electrodes was implemented. Basic tests were completed using a field programmable gate array logic system driving analogue circuitry to inject current into physiological saline via electrodes in hexagon arrangements and in a simple paired arrangement. The hexagon layout of electrodes was shown to clearly reduce the interaction between multiple current sources and hence cross talk.",

keywords = "Electrodes, FPGA, Vision prosthesis",

author = "Wong, {Y. T.} and Suaning, {G. J.} and S. Dokos and Preston, {P. J.} and N. Dommel and D. Grace and Lovell, {N. H.}",

year = "2005",

language = "English",

isbn = "0780387406",

volume = "7 VOLS",

pages = "5268--5271",

booktitle = "Proceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005",

note = "International Conference of the IEEE Engineering in Medicine and Biology Society 2005, EMBC 2005 ; Conference date: 01-09-2005 Through 04-09-2005",

url = "https://ieeexplore.ieee.org/xpl/conhome/10755/proceeding",

}

Wong, YT, Suaning, GJ, Dokos, S, Preston, PJ, Dommel, N, Grace, D & Lovell, NH 2005, An FPGA-based vision prosthesis prototype: Implementing an efficient multiplexing method for addressing electrodes. in Proceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005. vol. 7 VOLS, pp. 5268-5271, International Conference of the IEEE Engineering in Medicine and Biology Society 2005, Shanghai, China, 1/09/05.

An FPGA-based vision prosthesis prototype: Implementing an efficient multiplexing method for addressing electrodes. / Wong, Y. T.; Suaning, G. J.; Dokos, S. et al.
Proceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005. Vol. 7 VOLS 2005. p. 5268-5271.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

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T1 - An FPGA-based vision prosthesis prototype

T2 - International Conference of the IEEE Engineering in Medicine and Biology Society 2005

AU - Wong, Y. T.

AU - Suaning, G. J.

AU - Dokos, S.

AU - Preston, P. J.

AU - Dommel, N.

AU - Grace, D.

AU - Lovell, N. H.

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N2 - A prototype of an epi-retinal vision prosthesis based upon an efficient electrode addressing schema has been developed. This system has the ability to stimulate multiple electrode regions simultaneously, hence greatly improving the maximum rate of stimulation compared to many currently available neural stimulation devices based on serial stimulation protocols. To minimize the problem of cross talk between stimulating electrodes, a hexagon layout of electrodes was implemented. Basic tests were completed using a field programmable gate array logic system driving analogue circuitry to inject current into physiological saline via electrodes in hexagon arrangements and in a simple paired arrangement. The hexagon layout of electrodes was shown to clearly reduce the interaction between multiple current sources and hence cross talk.

AB - A prototype of an epi-retinal vision prosthesis based upon an efficient electrode addressing schema has been developed. This system has the ability to stimulate multiple electrode regions simultaneously, hence greatly improving the maximum rate of stimulation compared to many currently available neural stimulation devices based on serial stimulation protocols. To minimize the problem of cross talk between stimulating electrodes, a hexagon layout of electrodes was implemented. Basic tests were completed using a field programmable gate array logic system driving analogue circuitry to inject current into physiological saline via electrodes in hexagon arrangements and in a simple paired arrangement. The hexagon layout of electrodes was shown to clearly reduce the interaction between multiple current sources and hence cross talk.

KW - Electrodes

KW - FPGA

KW - Vision prosthesis

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SN - 9780780387409

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BT - Proceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005

Y2 - 1 September 2005 through 4 September 2005

ER -

An FPGA-based vision prosthesis prototype: Implementing an efficient multiplexing method for addressing electrodes

Abstract

Conference

Keywords

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Cite this