脑机接口1PPT课件.ppt

脑机接口1PPT课件.ppt

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1,Reporter:

Number:

Brain-ComputerInterface,2,CONTENTS,IntroductionTheoryApplicationsFutureWork,3,whatisBCI?

Abraincomputerinterface（BCI）,oftencalledamind-machineinterface（MMI）,orsometimescalledabrainmachineinterface（BMI）,isadirectcommunicationpathwaybetweenthebrainandanexternaldevice.,INTRODUCTION,4,.,EEG,Anelectroencephalogramisameasureofthebrainsvoltagefluctuationsasdetectedfromscalpelectrodes.Itisanapproximationofthecumulativeelectricalactivityofneurons.,fig1.electroencephalogram,5,theory,fig2.thestructureofBCIsystem,6,SignalAcquisition:

tomeasureEEGfromscalp（non-invasive）orbrainsurface（invasive）;Signalrecording,amplification,digitization;Pre-processing:

toimprovesignal-to-noiseratio;toimprovesignal-to-interferenceratioFeatureextraction/selection:

toreducedimension;tofindbestprojectiondirectionTranslationalgorithm:

feature=command,7,Applications,FordisabledpeopleCommunicationsControlNeuralprothesesNeuralrehabilitationForordinarypeopleControlinspecialenvironmentBCIgameLiedetectionbasedonEEG/fMRI,8,FutureWork,ImprovingphysicalmethodsforgatheringEEGsImprovinggeneralizationImprovingknowledgeofhowtointerpretwaves（notjustthe“newphrenology”）,9,Thankyouforyourattention,