Common Spatio-Time-Frequency Patterns for Motor Imagery-Based Brain Machine Interfaces. (3rd November 2013)

• Record Type: Journal Article
• Authors: Higashi, Hiroshi; Tanaka, Toshihisa
• Other Names: Zhang Daoqiang Academic Editor.
• Is Part Of: Computational intelligence and neuroscience. Volume 2013(2013)
• Publication Date: 2013-11-03
• Subjects: Neurosciences -- Data processing -- Periodicals; Computational intelligence -- Periodicals; Computational neuroscience -- Periodicals; 612.80285
• DOI: 10.1155/2013/537218
• Languages: English
• ISSNs: 1687-5265

Abstract

Abstract : For efficient decoding of brain activities in analyzing brain function with an application to brain machine interfacing (BMI), we address a problem of how to determine spatial weights (spatial patterns), bandpass filters (frequency patterns), and time windows (time patterns) by utilizing electroencephalogram (EEG) recordings. To find these parameters, we develop a data-driven criterion that is a natural extension of the so-called common spatial patterns (CSP) that are known to be effective features in BMI. We show that the proposed criterion can be optimized by an alternating procedure to achieve fast convergence. Experiments demonstrate that the proposed method can effectively extract discriminative features for a motor imagery-based BMI.