Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/69990
Título: | Surface EEG-Transcranial Direct Current Stimulation (tDCS) closed-loop system |
Autor(es): | Leite, Jorge Morales-Quezada, Leon Carvalho, Sandra Thibaut, Aurore Doruk, Deniz Chen, Chiun-Fan Schachter, Steven C. Rotenberg, Alexander Fregni, Felipe |
Palavras-chave: | EEG-tDCS closed-loop system EEG algorithm cognitive task proof-of-concept |
Data: | Set-2017 |
Editora: | World Scientific Publishing |
Revista: | International Journal of Neural Systems |
Citação: | Leite, J., Morales-Quezada, L., Carvalho, S., Thibaut, A., Doruk, D., Chen, C.-F., . . . Fregni, F. (2017). Surface EEG-Transcranial Direct Current Stimulation (tDCS) Closed-Loop System. International Journal of Neural Systems, 27(06), 1750026. doi: 10.1142/s0129065717500265 |
Resumo(s): | Conventional transcranial direct current stimulation (tDCS) protocols rely on applying electrical current at a fixed intensity and duration without using surrogate markers to direct the interventions. This has led to some mixed results; especially because tDCS induced effects may vary depending on the ongoing level of brain activity. Therefore, the objective of this preliminary study was to assess the feasibility of an EEG-triggered tDCS system based on EEG online analysis of its frequency bands. Six healthy volunteers were randomized to participate in a double-blind sham-controlled crossover design to receive a single session of 10 min 2 mA cathodal and sham tDCS. tDCS trigger controller was based upon an algorithm designed to detect an increase in the relative beta power of more than 200%, accompanied by a decrease of 50% or more in the relative alpha power, based on baseline EEG recordings. EEG-tDCS closed-loop-system was able to detect the predefined EEG magnitude deviation and successfully triggered the stimulation in all participants. This preliminary study represents a proof-of-concept for the development of an EEG-tDCS closed-loop system in humans. We discuss and review here different methods of closed loop system that can be considered and potential clinical applications of such system. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/69990 |
DOI: | 10.1142/S0129065717500265 |
ISSN: | 0129-0657 |
e-ISSN: | 1793-6462 |
Versão da editora: | https://www.worldscientific.com/doi/abs/10.1142/S0129065717500265 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CIPsi - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Leite 2017_International Journal of Neural Systems.pdf Acesso restrito! | 338,04 kB | Adobe PDF | Ver/Abrir |