脑电记录中参考 电极的设置 及其对脑电图特征的影响.pdf

, 2002 9 , 11 3 .　Journal　of 　Clinical 　Elec roneurophysiology (China), 　Sep ember 2002, Vol.11, No.3 [] 　1009-5934(2002)-03-0132-05　[] 　A 　[] 　R741.044 ·· “” 尧德中 　　[　] 　:(EEG)“” 。 :, EEG , 。 :, , EEG 。 :EEG “ ”, 。 [] 　;;;;; A study on the place of reference electrode in scalp EEG recordings YAO Dezhong School of L if e Science and Technology , University of Electronic S cience and Technology, Chengdu (610054), China [Abstract] 　Objective:To explore a new echique o approxima ely s andardize he ref erence elec rode of scalp EEG recordings o a poin a infini y.Method:Based on he f ac ha he source of he neural elec rical ac ivi ies by scalp EEG recordings or heir equivalen sources do no depend on he reference, he equivalen sources from scalp EEG recordings by a classical reference w ere recons ruc ed approxima ely, and hen he po en ials referenced a infini y are approxima ely w orked ou from he equivalen sources.Results:Simula ion s udies performed w i h assumed neural sources inside a volume conduc or model showed ha he effec of reference on EEG recordings could be grea ly reduced as he elec rical sources w ere loca ed in he mos impor an superf acial cor ical region.Conclusion:The reference elec rode of EEG recordings could be approxima ely ransformed o a poin a inf ini y o ge a s andardized EEG recording w i h zero ref erence. [Key words] 　Elec roencephalogram;Zero po en ial ref erence;Ref erence elec rode;Average ref erence;Spec ral analysis;Waveform analy sis 　　(EEG ), 、, [4] 、、、 EEG 。 。, , (inac ive elec rode) (ac ive reference elec rode ) 。, 。, , , , [ 1 ～6] , 。 (reference elec rode) 。, , ,