脑机接口1PPT课件.ppt

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1、Reporter:Number:Brain-ComputerInterface.CONTENTSIntroductionTheoryApplicationsFutureWork.whatisBCI?Abrain–computerinterface(BCI),oftencalledamind-machineinterface(MMI),orsometimescalledabrain–machineinterface(BMI),isadirectcommunicationpathwaybetweenthebrainandane

2、xternaldevice.INTRODUCTION..EEGAnelectroencephalogramisameasureofthebrain'svoltagefluctuationsasdetectedfromscalpelectrodes.Itisanapproximationofthecumulativeelectricalactivityofneurons.fig1.electroencephalogram.theoryfig2.thestructureofBCIsystem.SignalAcquisition

3、:tomeasureEEGfromscalp(non-invasive)orbrainsurface(invasive);Signalrecording,amplification,digitization;Pre-processing:toimprovesignal-to-noiseratio;toimprovesignal-to-interferenceratioFeatureextraction/selection:toreducedimension;tofindbestprojectiondirectionTran

4、slationalgorithm:feature=>command.ApplicationsFordisabledpeopleCommunicationsControlNeuralprothesesNeuralrehabilitationForordinarypeopleControlinspecialenvironmentBCIgameLiedetectionbasedonEEG/fMRI.FutureWorkImprovingphysicalmethodsforgatheringEEGsImprovinggeneral

5、izationImprovingknowledgeofhowtointerpretwaves(notjustthe“newphrenology”).Thankyouforyourattention.