脑电信号控制康复机器人的关键技术-程明

4520034[],,[][Abstract]Thispaperpresentsarehabilitationrobotcontroltechniquebasedonbrain-computerinterface(BCI).ThedefinitionandcurrentresearchapproachesofBCIaregiveninthebeginning.Then,theconstructionmethodofasteady-statevisualevokedpotential(SSVEP)basedBCIisintroducedindetail.Finally,theBCIisappliedtocontrolartificiallimbsuccessfully.[Keywords]electroencephalogram,brain-computerinterface,steady-statevisualevokedpotential,rehabilitationrobot,,,,-,-(Brain-ComputerInterface,BCI),,()-(),(),,(),Berger1929,;,,,,,,,,,,,,,,,,,,4620034,,,(VisualEvokedPotential,VEP),VEP(SteadyStateVEP,SSVEP)2Hz,,6,VEP,SSVEPSSVEP,,,,,,,,,,1.SSVEPSSVEP:,SSVEP,;,SSVEP,;,SSVEP,1.1SSVEPSSVEP,Oz(10-20);SSVEP,,SSVEP,,,10Hz,10Hz20Hz;,20Hz,10Hz17HzSSVEP,7Hz14Hz21Hz17HzSSVEP,SSVEP,SSVEP,,,SSVEPSSVEP1.2SSVEP,(),SSVEP,2,LmaxLmin,m:24720034(a)(b)3(a)SSVEP;(b)SSVEP,8Hzm=ab100%=Lmax-LminLmax+Lmin100%(1),100%,,,620HzSSVEP,1Hz3(a),610Hz,;10Hz,,8Hz,10%90%,10%,3(b),,30%40%,SSVEP,,,,,,30%,2.SSVEP4SSVEP,,,SSVEP0102,A/D(200Hz),,4SSVEP50Hz435Hz0.3,1024,512,512,200/10240.195Hz,,,,,,,,435Hz,4820034SSVEP,,,N,,P,(),(1-P)/(N-1),B=log2N+Plog2P+(1-P)log2[(1-P)/(N-1)](2),13,55.69/,27.15/5-25/3.,,5,,,,,344.SSVEP,,,,,,,,6()