Estimating the discriminative power of time varying features for EEG BMI

Independent components analysis;Dimensionality reduction;Brain-machine interface;Mental rotation;Electroencephalography;Symmetry

Mappus, Rudolph Louis, IV ; Computing

University:Georgia Institute of Technology

Department:Computing

关键词: Independent components analysis;    Dimensionality reduction;    Brain-machine interface;    Mental rotation;    Electroencephalography;    Symmetry;   

Others  :  https://smartech.gatech.edu/bitstream/1853/31738/1/mappus_rudolph_l_200912_phd.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

In this work, we present a set of methods aimed at improving the discriminative power of time-varying features of signals that contain noise. These methods use properties of noise signals as well as information theoretic techniques to factor types of noise and support signal inference for electroencephalographic (EEG) based brain-machine interfaces (BMI). EEG data were collected over two studies aimed at addressing Psychophysiological issues involving symmetry and mental rotation processing. The Psychophysiological data gathered in the mental rotation study also tested the feasibility of using dissociations of mental rotation tasks correlated with rotation angle in a BMI. We show the feasibility of mental rotation for BMI by showing comparable bitrates and recognition accuracy to state-of-the-art BMIs. The conclusion is that by using the feature selection methods introduced in this work to dissociate mental rotation tasks, we produce bitrates and recognition rates comparable to current BMIs.