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

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons84850

Saab,  J
Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons83798

Battes,  B
Department Empirical Inference, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons83948

Grosse-Wentrup,  M
Department Empirical Inference, Max Planck Institute for Biological Cybernetics, 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. Talk presented at 12th Conference of Junior Neuroscientists of Tübingen (NeNA 2011). Heiligkreuztal, Germany.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-BA02-E
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 passive-wet electrodes and assessed using offline 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.