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Using the Partial Directed Coherence to Understand Brain Functional Connectivity During Movement Imagery Tasks

  • Myriam Alanis-Espinosa
  • David Gutiérrez
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11309)

Abstract

We propose to use the partial directed coherence (PDC) to analyze the coupling between pairs of electroencephalographic (EEG) measurements during movement imagery tasks, as well as the directionality of such coupling. For this, we consider the multivariate autoregressive model of the signals from a selection of eleven EEG channels that are assumed as a fully-connected measurement network. Then, we aim to find differences in connectivity patterns between motor imagery and resting state that arise in a brain-computer interface (BCI) system with visual feedback that controls the movement of a robot. Our preliminary results show that it is possible to relate the changes in the magnitude of the PDC to different connectivity patterns in the measurement network we have considered, and those changes are in agreement with brain functional connectivity that has been reported in other studies based mainly in magnetic resonance imaging.

Keywords

Brain-computer interfaces Partial directed coherence Functional connectivity 

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Center for Research and Advanced Studies at MonterreyApodacaMexico

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