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https://hdl.handle.net/11000/6504
Study of the Functional Brain Connectivity and Lower-Limb Motor Imagery Performance After Transcranial Direct Current Stimulation
Title: Study of the Functional Brain Connectivity and Lower-Limb Motor Imagery Performance After Transcranial Direct Current Stimulation |
Authors: Ortiz, Mario Iáñez Martínez, Eduardo Gaxiola Tirado, Jorge A. Gutiérrez Ruiz, David Azorín Poveda, José María |
Department: Departamentos de la UMH::Ingeniería de Sistemas y Automática |
Issue Date: 2020-04-05 |
URI: http://hdl.handle.net/11000/6504 |
Abstract:
The use of transcranial direct current stimulation (tDCS) has been related to the improvement of motor
and learning tasks. The current research studies the effects of an asymmetric tDCS setup over brain
connectivity, when the subject is performing a motor imagery (MI) task during five consecutive days.
A brain–computer interface (BCI) based on electroencephalography is simulated in offline analysis to
study the effect that tDCS has over different electrode configurations for the BCI. This way, the BCI
performance is used as a validation index of the effect of the tDCS setup by the analysis of the classifier
accuracy of the experimental sessions. In addition, the relationship between the brain connectivity and the
BCI accuracy performance is analyzed. Results indicate that tDCS group, in comparison to the placebo
sham group, shows a higher significant number of connectivity interactions in the motor electrodes during
MI tasks and an increasing BCI accuracy over the days. However, the asymmetric tDCS setup does not
improve the BCI performance of the electrodes in the intended hemisphere
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Keywords/Subjects: BCI Motor Imagery PDC tDCS |
Knowledge area: Ingeniería. Tecnología |
Type of document: application/pdf |
Access rights: info:eu-repo/semantics/openAccess |
DOI: http://dx.doi.org/ 10.1142/S0129065720500380 |
Appears in Collections: Artículos Ingeniería de Sistemas y Automática
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