On-skin paintable biogel for long-term high-fidelity electroencephalogram recording

Chunya Wang; Haoyang Wang; Binghao Wang; Hiroo Miyata; Yan Wang; Md Osman Goni Nayeem; Jae Joon Kim; Sunghoon Lee; Tomoyuki Yokota; Hiroshi Onodera; Takao Someya

doi:10.1126/sciadv.abo1396

On-skin paintable biogel for long-term high-fidelity electroencephalogram recording

Chunya Wang, Haoyang Wang, Binghao Wang, Hiroo Miyata, Yan Wang, Md Osman Goni Nayeem, Jae Joon Kim, Sunghoon Lee, Tomoyuki Yokota, Hiroshi Onodera, Takao Someya^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

Long-term high-fidelity electroencephalogram (EEG) recordings are critical for clinical and brain science applications. Conductive liquid-like or solid-like wet interface materials have been conventionally used as reliable interfaces for EEG recording. However, because of their simplex liquid or solid phase, electrodes with them as interfaces confront inadequate dynamic adaptability to hairy scalp, which makes it challenging to maintain stable and efficient contact of electrodes with scalp for long-term EEG recording. Here, we develop an on-skin paintable conductive biogel that shows temperature-controlled reversible fluid-gel transition to address the abovementioned limitation. This phase transition endows the biogel with unique on-skin paintability and in situ gelatinization, establishing conformal contact and dynamic compliance of electrodes with hairy scalp. The biogel is demonstrated as an efficient interface for long-term high-quality EEG recording over several days and for the high-performance capture and classification of evoked potentials. The paintable biogel offers a biocompatible and long-term reliable interface for EEG-based systems.

Original language	American English
Journal	Science advances
Volume	8
Issue number	20
DOIs	https://doi.org/10.1126/sciadv.abo1396
State	Published - 20 May 2022
Externally published	Yes

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@article{c90b73c812014eb8918150e62aa5f945,

title = "On-skin paintable biogel for long-term high-fidelity electroencephalogram recording",

abstract = "Long-term high-fidelity electroencephalogram (EEG) recordings are critical for clinical and brain science applications. Conductive liquid-like or solid-like wet interface materials have been conventionally used as reliable interfaces for EEG recording. However, because of their simplex liquid or solid phase, electrodes with them as interfaces confront inadequate dynamic adaptability to hairy scalp, which makes it challenging to maintain stable and efficient contact of electrodes with scalp for long-term EEG recording. Here, we develop an on-skin paintable conductive biogel that shows temperature-controlled reversible fluid-gel transition to address the abovementioned limitation. This phase transition endows the biogel with unique on-skin paintability and in situ gelatinization, establishing conformal contact and dynamic compliance of electrodes with hairy scalp. The biogel is demonstrated as an efficient interface for long-term high-quality EEG recording over several days and for the high-performance capture and classification of evoked potentials. The paintable biogel offers a biocompatible and long-term reliable interface for EEG-based systems.",

author = "Chunya Wang and Haoyang Wang and Binghao Wang and Hiroo Miyata and Yan Wang and Nayeem, {Md Osman Goni} and Kim, {Jae Joon} and Sunghoon Lee and Tomoyuki Yokota and Hiroshi Onodera and Takao Someya",

year = "2022",

month = may,

day = "20",

doi = "10.1126/sciadv.abo1396",

language = "American English",

volume = "8",

journal = "Science advances",

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publisher = "American Association for the Advancement of Science",

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TY - JOUR

T1 - On-skin paintable biogel for long-term high-fidelity electroencephalogram recording

AU - Wang, Chunya

AU - Wang, Haoyang

AU - Wang, Binghao

AU - Miyata, Hiroo

AU - Wang, Yan

AU - Nayeem, Md Osman Goni

AU - Kim, Jae Joon

AU - Lee, Sunghoon

AU - Yokota, Tomoyuki

AU - Onodera, Hiroshi

AU - Someya, Takao

PY - 2022/5/20

Y1 - 2022/5/20

N2 - Long-term high-fidelity electroencephalogram (EEG) recordings are critical for clinical and brain science applications. Conductive liquid-like or solid-like wet interface materials have been conventionally used as reliable interfaces for EEG recording. However, because of their simplex liquid or solid phase, electrodes with them as interfaces confront inadequate dynamic adaptability to hairy scalp, which makes it challenging to maintain stable and efficient contact of electrodes with scalp for long-term EEG recording. Here, we develop an on-skin paintable conductive biogel that shows temperature-controlled reversible fluid-gel transition to address the abovementioned limitation. This phase transition endows the biogel with unique on-skin paintability and in situ gelatinization, establishing conformal contact and dynamic compliance of electrodes with hairy scalp. The biogel is demonstrated as an efficient interface for long-term high-quality EEG recording over several days and for the high-performance capture and classification of evoked potentials. The paintable biogel offers a biocompatible and long-term reliable interface for EEG-based systems.

AB - Long-term high-fidelity electroencephalogram (EEG) recordings are critical for clinical and brain science applications. Conductive liquid-like or solid-like wet interface materials have been conventionally used as reliable interfaces for EEG recording. However, because of their simplex liquid or solid phase, electrodes with them as interfaces confront inadequate dynamic adaptability to hairy scalp, which makes it challenging to maintain stable and efficient contact of electrodes with scalp for long-term EEG recording. Here, we develop an on-skin paintable conductive biogel that shows temperature-controlled reversible fluid-gel transition to address the abovementioned limitation. This phase transition endows the biogel with unique on-skin paintability and in situ gelatinization, establishing conformal contact and dynamic compliance of electrodes with hairy scalp. The biogel is demonstrated as an efficient interface for long-term high-quality EEG recording over several days and for the high-performance capture and classification of evoked potentials. The paintable biogel offers a biocompatible and long-term reliable interface for EEG-based systems.

U2 - 10.1126/sciadv.abo1396

DO - 10.1126/sciadv.abo1396

M3 - Article

C2 - 35594357

SN - 2375-2548

VL - 8

JO - Science advances

JF - Science advances

IS - 20

ER -

On-skin paintable biogel for long-term high-fidelity electroencephalogram recording

Abstract

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