Journal Article

Penalized Multi-Way Partial Least Squares for Smooth Trajectory Decoding from Electrocorticographic (ECoG) Recording

Eliseyev, Andrey, Aksenova, Tetiana

2016

Overview

In the current paper the decoding algorithms for motor-related BCI systems for continuous upper limb trajectory prediction are considered. Two methods for the smooth prediction, namely Sobolev and Polynomial Penalized Multi-Way Partial Least Squares (PLS) regressions, are proposed. The methods are compared to the Multi-Way Partial Least Squares and Kalman Filter approaches. The comparison demonstrated that the proposed methods combined the prediction accuracy of the algorithms of the PLS family and trajectory smoothness of the Kalman Filter. In addition, the prediction delay is significantly lower for the proposed algorithms than for the Kalman Filter approach. The proposed methods could be applied in a wide range of applications beyond neuroscience.

• Publisher: Public Library of Science,Public Library of Science (PLoS)
• Subject: Algorithms / Biology and Life Sciences / Brain research / Brain-Computer Interfaces / Calibration / Decoding / Discriminant analysis / Electrocorticography - methods / Electrodes / Electroencephalography / Engineering / Engineering and Technology / Food science / Humans / Imaging, Three-Dimensional / Interfaces (Computers) / Kalman filter / Kalman filters / Least squares / Least-Squares Analysis / Methods / Models, Statistical / Movement / Nervous system / Neuroimaging / Neurosciences / Online Systems / Physical Sciences / Principal components analysis / Reproducibility of Results / Research and Analysis Methods / Signal Processing, Computer-Assisted / Smoothness / Spectrum analysis / Trajectories / Variables