Design considerations for ground referencing in multi-module neural implants

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Title: Design considerations for ground referencing in multi-module neural implants
Authors: Haci, D
Liu, Y
Ghoreishizadeh, S
Constandinou, TG
Item Type: Conference Paper
Abstract: Implantable neural interfaces have evolved in the past decades from stimulation-only devices to closed-loop record- ing and stimulation systems, allowing both for more targeted therapeutic techniques and more advanced prosthetic implants. Emerging applications require multi-module active implantable devices with intrabody power and data transmission. This distributed approach poses a new set of challenges related to inter-module connectivity, functional reliability and patient safety. This paper addresses the ground referencing challenge in active multi-implant systems, with a particular focus on neural recording devices. Three different grounding schemes (passive, drive, and sense) are presented and evaluated in terms of both recording reliability and patient safety. Considerations on the practical implementation of body potential referencing circuitry are finally discussed, with a detailed analysis of their impact on the recording performance.
Issue Date: 17-Oct-2018
Date of Acceptance: 13-Aug-2018
Publisher: IEEE
Start Page: 1
End Page: 4
Copyright Statement: This paper is embargoed until publication.
Sponsor/Funder: Wellcome Trust
Funder's Grant Number: BH134389
Conference Name: IEEE Biomedical Circuits and Systems (BioCAS) Conference 2018
Publication Status: Accepted
Start Date: 2018-10-17
Finish Date: 2018-10-19
Conference Place: Cleveland, Ohio, USA
Embargo Date: publication subject to indefinite embargo
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering

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