Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 112, Issue 13, Pages 3920-3925Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1424875112
Keywords
soft electronics; auricle integration; brain-computer interface; text speller
Categories
Funding
- US Department of Energy, Office of Science, Basic Energy Sciences [DE-FG02-07ER46741]
- School of Engineering and research development support from Center for Rehabilitation Science and Engineering, Virginia Commonwealth University
- Integrative Graduate Education and Research Traineeship, Neuroengineering program at the University of Illinois at Urbana-Champaign
- Global Research Laboratory Program through the National Research Foundation, the Ministry of Science, Korea [K20704000003TA050000310]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0955088] Funding Source: National Science Foundation
Ask authors/readers for more resources
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).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available