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Ụkpụrụ nke EEG?

Ọgbọ na ndekọ nke EEG:

Ụkpụrụ nke EEG?

 

A na-enweta EEG n'ozuzu site na electrodes n'elu isi isi.A na-ekwenyekarị na usoro ọgbọ nke isi isi nwere ike ịbụ: mgbe ọ dị jụụ, dendrites apical nke mkpụrụ ndụ pyramidal - sel dum dị na axis nke cell ahụ nọ n'ọnọdụ polarized;mgbe a na-ebunye mkpali n'otu akụkụ nke cell, ọ na-eme ka njedebe kwụsị.Ọdịiche dị n'ofe cell na-emepụta sistemu ọkụ eletrik bipolar, nke ugbu a na-esi n'otu nsọtụ ruo na nke ọzọ.Ebe ma cytoplasm na mmiri extracellular nwere electrolytes, ugbu a na-agafekwa n'èzí cell.Enwere ike ịdekọ ọrụ eletrik site na iji electrodes akpụkpọ ụkwụ.N'ezie, mgbanwe ndị nwere ike na EEG n'isi bụ ngwakọta nke ọtụtụ ebe ọkụ eletrik dị otú ahụ.Otu EEG anaghị egosipụta ọrụ eletriki nke cell akwara, kama ọ na-edekọ nchikota ọrụ eletrik nke ọtụtụ mkpụrụ ndụ akwara na mpaghara ụbụrụ nke electrodes nọchiri anya ya.
Ihe ndị bụ isi nke EEG: Ụdị ebili mmiri nke EEG adịghị adịkarị, na ugboro ole ya na-agbanwe n'ihe dị ka 1 ruo 30 ugboro kwa nkeji.Ọtụtụ mgbe, mgbanwe mgbanwe a na-ekewa n'ime 4 bands: ugboro nke delta wave bụ 0,5 ruo 3 ugboro./ sk, njupụta bụ 20-200 microvolts, ndị okenye nkịtị nwere ike ịdekọ ebili mmiri a mgbe ha nọ n'oké ụra;ugboro nke theta ife bụ 4-7 ugboro kwa sekọnd, na njupụta bụ banyere 100-150 microvolts, ndị okenye na-ehi ụra mgbe a ife nwere ike ịdekọ;A na-akpọkọta ebili mmiri theta na delta dị ka ebili mmiri nwayọ, na ebili mmiri delta na ebili mmiri theta anaghị edekọkarị na ndị nkịtị mụrụ anya;Ugboro nke ebili mmiri alpha bụ 8 ruo 13 ugboro kwa sekọnd, na njupụta bụ 20 ruo 100 microvolts.Ọ bụ ụda bụ isi nke ebili mmiri ụbụrụ ndị okenye nkịtị, nke na-eme mgbe anya na-amụ anya ma mechie;Ugboro nke ebili mmiri beta bụ 14 ruo 30 ugboro kwa sekọnd, na njupụta bụ 5 ruo 20 microvolts.Ogo nke echiche ka sara mbara, na ọdịdị nke ebili mmiri beta n'ozuzu na-egosi na ụbụrụ ụbụrụ dị n'ọnọdụ obi ụtọ.EEG nke ụmụaka nkịtị dị iche na nke ndị okenye.A na-achịkwa ụmụ ọhụrụ site na ebili mmiri na-adịghị njupụta nke dị ala, na ugboro nke ebili mmiri ụbụrụ na-eji nwayọọ nwayọọ na-abawanye ka afọ.
① ebili mmiri: ugboro 8 ~ 13 Hz, njupụta 10 ~ 100μV.Mpaghara niile nke ụbụrụ nwere, mana nke kacha pụta ìhè na mpaghara occipital.Alfa rhythm bụ isi ọrụ EEG nkịtị na ndị okenye na ụmụaka ndị toro eto mgbe anya ha mụrụ anya ma mechie, na ụda alfa na ụmụaka na-eji nwayọọ nwayọọ pụta ìhè n'afọ.
②β ife: ugboro bụ 14 ~ 30Hz, na njupụta bụ banyere 5~30/μV, nke pụtara ìhè karịa n'ihu, temporal na Central mpaghara.Na-abawanye na ọrụ uche na mkpali mmetụta uche.Ihe dị ka 6% nke ndị nkịtị ka nwere beta rhythm na EEG e dekọrọ ọbụna mgbe echiche ha kwụsiri ike na anya mechiri emechi, nke a na-akpọ beta EEG.
③ Theta ife: ugboro 4~7Hz, njupụta 20~40μV.
④δ ife: ugboro 0.5~3Hz, njupụta 10 ~ 20μV.Ọtụtụ mgbe na-apụta n'egedege ihu.


Oge nzipu: Ọgọst-26-2022