A comparison of regression techniques for a two-dimensional sensorimotor rhythm-based brain–computer interface
Fruitet, Joan; McFarland, Dennis J; Wolpaw, Jonathan R; Fruitet, Joan; Ecole Normale Supérieure, 45 rue d'Ulm, 75230 Paris cedex 05, France; McFarland, Dennis J; Laboratory of Neural Injury and Repair, Wadsworth Center, New York State Department of Health and State University of New York, Albany, NY 12201, USA; Wolpaw, Jonathan R; Laboratory of Neural Injury and Repair, Wadsworth Center, New York State Department of Health and State University of New York, Albany, NY 12201, USA
Журнал:
Journal of Neural Engineering
Дата:
2010-02-01
Аннотация:
People can learn to control electroencephalogram (EEG) features consisting of sensorimotor-rhythm amplitudes and use this control to move a cursor in one, two or three dimensions to a target on a video screen. This study evaluated several possible alternative models for translating these EEG features into two-dimensional cursor movement by building an offline simulation using data collected during online performance. In offline comparisons, support-vector regression (SVM) with a radial basis kernel produced somewhat better performance than simple multiple regression, the LASSO or a linear SVM. These results indicate that proper choice of a translation algorithm is an important factor in optimizing brain–computer interface (BCI) performance, and provide new insight into algorithm choice for multidimensional movement control.
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