Evidence map›Paper›PMID 25775550›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

Soft, curved electrode systems capable of integration on the auricle as a persistent brain-computer interface.

James J S Norton, Dong Sup Lee, Jung Woo Lee, Woosik Lee, Ohjin Kwon, Phillip Won, Sung-Young Jung, Huanyu Cheng, Jae-Woong Jeong, Abdullah Akce and 10 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 104 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
104citing papers in PubMed, 1 pooled it
18.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

104 citing papers in PubMed, 1 synthesis or guideline pooled it, 378 citations in OpenAlex.

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44 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

20 authors at 8 institutions in 3 countries.

James J S NortonNeuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801;
Dong Sup LeeDepartment of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA 23284; Department of Mechanical and Nuclear Engineering, Center for Rehabilitation Science and Engineering, Virginia Commonwealth University, Richmond, VA 23284;
Jung Woo LeeDepartment of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801; Department of Materials Science and Engineering, Department of Energy Engineering, Hanyang University, Seoul 133-791, Republic of Korea;
Woosik LeeDepartment of Mechanical and Nuclear Engineering, Center for Rehabilitation Science and Engineering, Virginia Commonwealth University, Richmond, VA 23284;
Ohjin KwonDepartment of Mechanical and Nuclear Engineering, Center for Rehabilitation Science and Engineering, Virginia Commonwealth University, Richmond, VA 23284;
Phillip WonDepartment of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801;
Sung-Young JungDepartment of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801; Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;
Huanyu ChengDepartments of Civil and Environmental Engineering and Mechanical Engineering, Center for Engineering and Health, Skin Disease Research Center, Northwestern University, Evanston, IL 60208;
Jae-Woong JeongDepartment of Electrical, Computer, and Energy Engineering, University of Colorado Boulder, Boulder, CO 80309;
Abdullah AkceGoogle Inc., Mountain View, CA 94043;
Stephen UmunnaDepartment of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801;
Ilyoun NaDepartment of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801; Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;
Yong Ho KwonDepartment of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801;
Xiao-Qi WangDepartment of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611;
ZhuangJian LiuInstitute of High Performance Computing, 138632, Singapore; and.
Ungyu PaikDepartment of Materials Science and Engineering, Department of Energy Engineering, Hanyang University, Seoul 133-791, Republic of Korea;
Yonggang HuangDepartments of Civil and Environmental Engineering and Mechanical Engineering, Center for Engineering and Health, Skin Disease Research Center, Northwestern University, Evanston, IL 60208;
Timothy BretlDepartment of Aerospace Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801.
Woon-Hong YeoDepartment of Mechanical and Nuclear Engineering, Center for Rehabilitation Science and Engineering, Virginia Commonwealth University, Richmond, VA 23284; jrogers@illinois.edu whyeo@vcu.edu.
John A RogersDepartment of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801; jrogers@illinois.edu whyeo@vcu.edu.
University of Illinois Urbana-Champaign · USVirginia Commonwealth University · USNorthwestern University · USPohang University of Science and Technology · KRGoogle (United States) · USHanyang University · KRInstitute of High Performance Computing · SGUniversity of Colorado Boulder · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent advances in electrodes for noninvasive recording of electroencephalograms expand opportunities collecting such data for diagnosis of neurological disorders and brain-computer interfaces. Existing technologies, however, cannot be used effectively in continuous, uninterrupted modes for more than a few days due to irritation and irreversible degradation in the electrical and mechanical properties of the skin interface. Here we introduce a soft, foldable collection of electrodes in open, fractal mesh geometries that can mount directly and chronically on the complex surface topology of the auricle and the mastoid, to provide high-fidelity and long-term capture of electroencephalograms in ways that avoid any significant thermal, electrical, or mechanical loading of the skin. Experimental and computational studies establish the fundamental aspects of the bending and stretching mechanics that enable this type of intimate integration on the highly irregular and textured surfaces of the auricle. Cell level tests and thermal imaging studies establish the biocompatibility and wearability of such systems, with examples of high-quality measurements over periods of 2 wk with devices that remain mounted throughout daily activities including vigorous exercise, swimming, sleeping, and bathing. Demonstrations include a text speller with a steady-state visually evoked potential-based brain-computer interface and elicitation of an event-related potential (P300 wave).

Indexed as

Brain-Computer InterfacesEar, ExternalCognitionComputersElectrodesElectroencephalographyElectronicsEquipment DesignEvent-Related Potentials, P300FractalsHumansSignal Processing, Computer-AssistedSignal-To-Noise Ratioauricle integrationbrain–computer interfacesoft electronicstext speller

Identifiers

PMID25775550
PMCPMC4386388
OpenAlexW2065613910

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.