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Effects of tDCS on Real-Time BCI Detection of Pedaling Motor Imagery

The purpose of this work is to strengthen the cortical excitability over the primary motor cortex (M1) and the cerebro-cerebellar pathway by means of a new transcranial direct current stimulation (tDCS) configuration to detect lower limb motor imagery (MI) in real time using two different cognitive...

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Autores principales: Rodriguez-Ugarte, Maria de la Soledad, Iáñez, Eduardo, Ortiz-Garcia, Mario, Azorín, José M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5948891/
https://www.ncbi.nlm.nih.gov/pubmed/29642493
http://dx.doi.org/10.3390/s18041136
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author Rodriguez-Ugarte, Maria de la Soledad
Iáñez, Eduardo
Ortiz-Garcia, Mario
Azorín, José M.
author_facet Rodriguez-Ugarte, Maria de la Soledad
Iáñez, Eduardo
Ortiz-Garcia, Mario
Azorín, José M.
author_sort Rodriguez-Ugarte, Maria de la Soledad
collection PubMed
description The purpose of this work is to strengthen the cortical excitability over the primary motor cortex (M1) and the cerebro-cerebellar pathway by means of a new transcranial direct current stimulation (tDCS) configuration to detect lower limb motor imagery (MI) in real time using two different cognitive neural states: relax and pedaling MI. The anode is located over the primary motor cortex in Cz, and the cathode over the right cerebro-cerebellum. The real-time brain–computer interface (BCI) designed is based on finding, for each electrode selected, the power at the particular frequency where the most difference between the two mental tasks is observed. Electroencephalographic (EEG) electrodes are placed over the brain’s premotor area (PM), M1, supplementary motor area (SMA) and primary somatosensory cortex (S1). A single-blind study is carried out, where fourteen healthy subjects are separated into two groups: sham and active tDCS. Each subject is experimented on for five consecutive days. On all days, the results achieved by the active tDCS group were over 60% in real-time detection accuracy, with a five-day average of 62.6%. The sham group eventually reached those levels of accuracy, but it needed three days of training to do so.
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spelling pubmed-59488912018-05-17 Effects of tDCS on Real-Time BCI Detection of Pedaling Motor Imagery Rodriguez-Ugarte, Maria de la Soledad Iáñez, Eduardo Ortiz-Garcia, Mario Azorín, José M. Sensors (Basel) Article The purpose of this work is to strengthen the cortical excitability over the primary motor cortex (M1) and the cerebro-cerebellar pathway by means of a new transcranial direct current stimulation (tDCS) configuration to detect lower limb motor imagery (MI) in real time using two different cognitive neural states: relax and pedaling MI. The anode is located over the primary motor cortex in Cz, and the cathode over the right cerebro-cerebellum. The real-time brain–computer interface (BCI) designed is based on finding, for each electrode selected, the power at the particular frequency where the most difference between the two mental tasks is observed. Electroencephalographic (EEG) electrodes are placed over the brain’s premotor area (PM), M1, supplementary motor area (SMA) and primary somatosensory cortex (S1). A single-blind study is carried out, where fourteen healthy subjects are separated into two groups: sham and active tDCS. Each subject is experimented on for five consecutive days. On all days, the results achieved by the active tDCS group were over 60% in real-time detection accuracy, with a five-day average of 62.6%. The sham group eventually reached those levels of accuracy, but it needed three days of training to do so. MDPI 2018-04-08 /pmc/articles/PMC5948891/ /pubmed/29642493 http://dx.doi.org/10.3390/s18041136 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rodriguez-Ugarte, Maria de la Soledad
Iáñez, Eduardo
Ortiz-Garcia, Mario
Azorín, José M.
Effects of tDCS on Real-Time BCI Detection of Pedaling Motor Imagery
title Effects of tDCS on Real-Time BCI Detection of Pedaling Motor Imagery
title_full Effects of tDCS on Real-Time BCI Detection of Pedaling Motor Imagery
title_fullStr Effects of tDCS on Real-Time BCI Detection of Pedaling Motor Imagery
title_full_unstemmed Effects of tDCS on Real-Time BCI Detection of Pedaling Motor Imagery
title_short Effects of tDCS on Real-Time BCI Detection of Pedaling Motor Imagery
title_sort effects of tdcs on real-time bci detection of pedaling motor imagery
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5948891/
https://www.ncbi.nlm.nih.gov/pubmed/29642493
http://dx.doi.org/10.3390/s18041136
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