简介：Empiricalmodedecomposition(EMD)isanewsignaldecompositionmethod,whichcoulddecomposethenon-stationarysignalintoseveralsingle-componentintrinsicmodefunctions(IMFs)andeachIMFhassomephysicalmeanings.ThispaperstudiesthesingletrialextractionofvisualevokedpotentialbycombiningEMDandwaveletthresholdfilter.ExperimentalresultsshowedthattheEMDbasedmethodcanseparatethenoiseoutoftheeventrelatedpotentials(ERPs)andeffectivelyextracttheweakERPsinstrongbackgroundnoise,whichmanifestedasthewaveformcharacteristicsandrootmeansquareerror(RMSE).
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