Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/52547
Título: | Multichannel EEG with novel Ti/TiN dry electrodes |
Autor(es): | Fiedler, P. Griebel, S. Pedrosa, Paulo Eduardo Teixeira Baptista Fonseca, C. Vaz, F. Zentner, L. Zanow, F. Haueisen, J. |
Palavras-chave: | Dry electrode Bioelectric signal Electroencephalography (EEG) Multichannel cap Actuator Titanium-nitride |
Data: | 2015 |
Editora: | Elsevier |
Revista: | Sensors and Actuators A: Physical |
Resumo(s): | Research using multichannel electroencephalographic recordings is increasingly characterized by greater numbers of electrodes. With up to 256 silver/silver chloride (Ag/AgCI) electrodes, preparation and electrode placement is time consuming and error prone. We propose a novel type of dry titanium/titanium nitride (Ti/TiN) electrode, integrated into a novel electroencephalography (EEG) cap based on pneumatic-driven mechanisms. The electrodes were characterized electrochemically and comparative biosignal measurements were carried out. In a NaCl solution, the impedance values were between 824 and 54 ohm and the phase values between 52 and 100 at frequencies between 5 Hz and 10 kHz for the Ti/TiN electrodes. For resting-state EEG, and with eye movements, alpha activity, and pattern reversal visual evoked potential (VEP), there were no significant differences between adjacent novel Ti/TiN and standard Ag/AgCI electrodes in 97.2% of the signal episodes investigated. The potential maps for pattern reversal VEP were similar with both types of electrodes. In conclusion, our novel cap system based on Ti/TiN electrodes and pneumatic-driven mechanisms enables completely dry EEG acquisition and can thus potentially replace conventional Ag/AgCI electrodes due to similar signal quality. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/52547 |
DOI: | 10.1016/j.sna.2014.10.010 |
ISSN: | 0924-4247 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito autor |
Aparece nas coleções: | CDF - GRF - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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fiedler et al 2014 - Multichannel EEG with novel TiTiN dry electrodes (1).pdf Acesso restrito! | 2,23 MB | Adobe PDF | Ver/Abrir |