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Simultaneous EEG Recordings with Dry and Wet Electrodes in Motor-Imagery

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons76021

Saab,  J.
Dept. Empirical Inference, Max Planck Institute for Intelligent Systems, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons75256

Battes,  B.
Dept. Empirical Inference, Max Planck Institute for Intelligent Systems, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons75531

Grosse-Wentrup,  M.
Dept. Empirical Inference, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Citation

Saab, J., Battes, B., & Grosse-Wentrup, M. (2011). Simultaneous EEG Recordings with Dry and Wet Electrodes in Motor-Imagery. In 5th International Brain-Computer Interface Conference (BCI 2011) (pp. 312-315).


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-4C68-0
Abstract
Robust dry EEG electrodes are arguably the key to making EEG Brain-Computer Interfaces (BCIs) a practical technology. Existing studies on dry EEG electrodes can be characterized by the recording method (stand-alone dry electrodes or simultaneous recording with wet electrodes), the dry electrode technology (e.g. active or passive), the paradigm used for testing (e.g. event-related potentials), and the measure of performance (e.g. comparing dry and wet electrode frequency spectra). In this study, an active-dry electrode prototype is tested, during a motor-imagery task, with EEG-BCI in mind. It is used simultaneously with wet electrodes and assessed using classification accuracy. Our results indicate that the two types of electrodes are comparable in their performance but there are improvements to be made, particularly in finding ways to reduce motion-related artifacts.