Non-invasive dry electrodes for EEG

This paper presents a non-invasive dry electrode for electroencephalogram (EEG) acquisition. These electrodes can be integrated in a wearable braincap for wireless EEG that can be used for a long time by patients avoiding the contact gel. This wearable braincap will allow mobility to the patients, w...

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Bibliographic Details
Main Author: Silva, M. F. (author)
Other Authors: Dias, N. S. (author), Ribeiro, J. F. (author), Gonçalves, L. M. (author), Carmo, João Paulo Pereira (author), Mendes, P. M. (author), Correia, J. H. (author), Silva, A. F. (author)
Format: conferencePaper
Language:eng
Published: 2010
Subjects:
Electrode
IrOx
Bulk-micromachining
KOH
Online Access:http://hdl.handle.net/1822/17230
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/17230
Description
Summary:This paper presents a non-invasive dry electrode for electroencephalogram (EEG) acquisition. These electrodes can be integrated in a wearable braincap for wireless EEG that can be used for a long time by patients avoiding the contact gel. This wearable braincap will allow mobility to the patients, while simultaneously having their electrical brain activity monitored. The fabricated dry electrodes are based on iridium oxide (IrOx) deposited by reactively pulsed sputtering. The electrode employs an array of microtips that penetrate the outer skin layer (i.e. stratum corneum) that is 10 µm thick. The microtips (100-200 µm deep) were micromachined through a bulk-micromachining process based on a KOH solution.

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