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1、Reporter:Number:,Brain-Computer Interface,CONTENTS,IntroductionTheoryApplicationsFuture Work,what is BCI?,Abraincomputer interface(BCI),often called amind-machine interface(MMI),or sometimes called abrainmachine interface(BMI),is a direct communication pathway between the brain and an external devic
2、e.,INTRODUCTION,.,EEG,An electroencephalogram is a measure of the brains voltage fluctuations as detected from scalp electrodes.It is an approximation of the cumulative electrical activity of neurons.,fig1.electroencephalogram,theory,fig2.the structure of BCI system,Signal Acquisition:to measure EEG
3、 from scalp(non-invasive)or brain surface(invasive);Signal recording,amplification,digitization;Pre-processing:to improve signal-to-noise ratio;to improve signal-to-interference ratioFeature extraction/selection:to reduce dimension;to find best projection direction Translation algorithm:feature=comm
4、and,Applications,For disabled peopleCommunications ControlNeural prothesesNeural rehabilitationFor ordinary peopleControl in special environmentBCI gameLie detection based on EEG/fMRI,Future Work,Improving physical methods for gathering EEGsImproving generalizationImproving knowledge of how to interpret waves(not just the“new phrenology”),Thank you for your attention,
