1、1,Reporter:#Number:#,Brain-Computer Interface,2,CONTENTS,IntroductionTheoryApplicationsFuture Work,3,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 exter
2、nal device.,INTRODUCTION,4,.,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,5,theory,fig2.the structure of BCI system,6,Signal Acquisition
3、:#to measure EEG 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
4、algorithm:#feature=command,7,Applications,For disabled peopleCommunications ControlNeural prothesesNeural rehabilitationFor ordinary peopleControl in special environmentBCI gameLie detection based on EEG/fMRI,8,Future Work,Improving physical methods for gathering EEGsImproving generalizationImproving knowledge of how to interpret waves(not just the“new phrenology”),9,Thank you for your attention,