A Wearable Ear-EEG Recording System Based on Dry-Contact Active Electrodes

Xiong Zhou; Qiang Li; Søren Kilsgaard; Farshad Moradi; Simon Kappel; Preben Kidmose

doi:10.1109/VLSIC.2016.7573559

A Wearable Ear-EEG Recording System Based on Dry-Contact Active Electrodes

Xiong Zhou
, Qiang Li
, Søren Kilsgaard
, Farshad Moradi
, Simon Kappel
, Preben Kidmose

Publikation: Bidrag til bog/antologi/rapport/proceeding › Konferencebidrag i proceedings › Forskning › peer review

51 Citationer (Scopus)

Abstract

This work reports an ear-EEG acquisition system with dry-contact active electrodes for future wearable applications. Employing dedicated chopper buffer in the active electrodes, a prototype fabricated in a 0.18-μm CMOS demonstrates input impedance as large as 18GΩ@DC and 6.7GΩ@50Hz, and 3.03fA/vHz input current noise, and a total input-referred noise (IRN) of 0.67μV _rms in 0.5-100Hz bandwidth. System's CMRR in combination with active electrodes is higher than 100dB@DC. Under large source impedance imbalance of 1MΩ, a 78-dB@50Hz CMRR is still obtained. To validate the system's ability to record EEG, an auditory stead-state response was measured, showing same SNR with wet electrodes and a commercial EEG amplifier.

Originalsprog	Engelsk
Titel	2016 IEEE Symposium on VLSI Circuits, VLSI Circuits 2016 : VLSI Circuits 2016
Antal sider	2
Vol/bind	2016
Forlag	IEEE Press
Publikationsdato	21 sep. 2016
Artikelnummer	7573559
ISBN (Trykt)	978-150900634-2
ISBN (Elektronisk)	9781509006342
DOI	https://doi.org/10.1109/VLSIC.2016.7573559
Status	Udgivet - 21 sep. 2016
Begivenhed	Symposia on VLSI Technology and Circuits - Honolulu, USA Varighed: 13 jun. 2016 → 17 jun. 2016

Konference

Konference	Symposia on VLSI Technology and Circuits
Land/Område	USA
By	Honolulu
Periode	13/06/2016 → 17/06/2016

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Citationsformater

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abstract = "This work reports an ear-EEG acquisition system with dry-contact active electrodes for future wearable applications. Employing dedicated chopper buffer in the active electrodes, a prototype fabricated in a 0.18-μm CMOS demonstrates input impedance as large as 18GΩ@DC and 6.7GΩ@50Hz, and 3.03fA/vHz input current noise, and a total input-referred noise (IRN) of 0.67μV rms in 0.5-100Hz bandwidth. System's CMRR in combination with active electrodes is higher than 100dB@DC. Under large source impedance imbalance of 1MΩ, a 78-dB@50Hz CMRR is still obtained. To validate the system's ability to record EEG, an auditory stead-state response was measured, showing same SNR with wet electrodes and a commercial EEG amplifier.",

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T1 - A Wearable Ear-EEG Recording System Based on Dry-Contact Active Electrodes

AU - Zhou, Xiong

AU - Li, Qiang

AU - Kilsgaard, Søren

AU - Moradi, Farshad

AU - Kappel, Simon

AU - Kidmose, Preben

PY - 2016/9/21

Y1 - 2016/9/21

N2 - This work reports an ear-EEG acquisition system with dry-contact active electrodes for future wearable applications. Employing dedicated chopper buffer in the active electrodes, a prototype fabricated in a 0.18-μm CMOS demonstrates input impedance as large as 18GΩ@DC and 6.7GΩ@50Hz, and 3.03fA/vHz input current noise, and a total input-referred noise (IRN) of 0.67μV rms in 0.5-100Hz bandwidth. System's CMRR in combination with active electrodes is higher than 100dB@DC. Under large source impedance imbalance of 1MΩ, a 78-dB@50Hz CMRR is still obtained. To validate the system's ability to record EEG, an auditory stead-state response was measured, showing same SNR with wet electrodes and a commercial EEG amplifier.

AB - This work reports an ear-EEG acquisition system with dry-contact active electrodes for future wearable applications. Employing dedicated chopper buffer in the active electrodes, a prototype fabricated in a 0.18-μm CMOS demonstrates input impedance as large as 18GΩ@DC and 6.7GΩ@50Hz, and 3.03fA/vHz input current noise, and a total input-referred noise (IRN) of 0.67μV rms in 0.5-100Hz bandwidth. System's CMRR in combination with active electrodes is higher than 100dB@DC. Under large source impedance imbalance of 1MΩ, a 78-dB@50Hz CMRR is still obtained. To validate the system's ability to record EEG, an auditory stead-state response was measured, showing same SNR with wet electrodes and a commercial EEG amplifier.

UR - https://www.scopus.com/pages/publications/84990888685

U2 - 10.1109/VLSIC.2016.7573559

DO - 10.1109/VLSIC.2016.7573559

M3 - Article in proceedings

SN - 978-150900634-2

VL - 2016

BT - 2016 IEEE Symposium on VLSI Circuits, VLSI Circuits 2016

PB - IEEE Press

T2 - Symposia on VLSI Technology and Circuits

Y2 - 13 June 2016 through 17 June 2016

ER -

A Wearable Ear-EEG Recording System Based on Dry-Contact Active Electrodes

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