Umgomo we-EEG?

Ukukhiqizwa nokuqoshwa kwe-EEG:

I-EEG ngokuvamile itholakala ngama-electrode ebusweni bekhanda lekhanda.Indlela yokukhiqiza okungenzeka kwe-scalp ngokuvamile ikholelwa ukuthi: uma ithulile, ama-apical dendrites amangqamuzana e-pyramidal - yonke ingqamuzana e-axis yomzimba weseli isesimweni se-polarized;lapho umfutho udluliselwa komunye umkhawulo wengqamuzana, kubangela ukuphela kwe-depolarized.Umehluko ongaba khona kulo lonke iseli udala isistimu yensimu kagesi eyi-bipolar, yamanje egeleza ukusuka komunye umkhawulo kuya komunye.Njengoba kokubili i-cytoplasm kanye ne-extracellular fluid iqukethe ama-electrolyte, amanje nawo adlula ngaphandle kweseli.Lo msebenzi kagesi ungarekhodwa kusetshenziswa ama-electrode ekhanda.Eqinisweni, izinguquko ezingaba khona ku-EEG esikhumbeni ziyinhlanganisela yezinkambu eziningi zikagesi ze-bipolar.I-EEG ayibonisi ukusebenza kukagesi kwengqamuzana lezinzwa, kodwa esikhundleni salokho irekhoda isamba somsebenzi kagesi wamaqembu amaningi wamangqamuzana ezinzwa endaweni yobuchopho emelwe ama-electrode.
Izingxenye eziyisisekelo ze-EEG: I-waveform ye-EEG ayijwayelekile kakhulu, futhi imvamisa yayo ishintsha ebangeni lezikhathi ezingaba ngu-1 kuye kwezingama-30 ngomzuzwana.Ngokuvamile lolu shintsho lwemvamisa luhlukaniswa ngamabhande angu-4: imvamisa ye-delta wave izikhathi ezingu-0.5 kuya kwezi-3./ isekhondi, i-amplitude i-20-200 microvolts, abantu abadala abavamile bangaqopha kuphela leli gagasi lapho belele ubuthongo obukhulu;imvamisa ye-theta wave izikhathi ezingama-4-7 ngomzuzwana, futhi i-amplitude imayelana ne-100-150 microvolts, abantu abadala bavame ukulala Le wave ingarekhodwa;amagagasi e-theta nawe-delta ngokuhlangene abizwa ngokuthi amagagasi ahamba kancane, futhi amagagasi e-delta namagagasi e-theta ngokuvamile awabhalwa kubantu abavamile abaphapheme;imvamisa yamagagasi e-alpha yizikhathi eziyisi-8 kuye kweziyi-13 ngomzuzwana, futhi i-amplitude ingama-20 kuya ku-100 microvolts.Kuyisigqi esiyisisekelo samaza obuchopho obuvamile obuvamile, okwenzeka lapho amehlo ephapheme futhi evalekile;imvamisa yamagagasi e-beta yizikhathi eziyi-14 kuye kwezingama-30 ngomzuzwana, futhi i-amplitude i-5 kuya ku-20 microvolts.Ububanzi bokucabanga babanzi, futhi ukubonakala kwamagagasi e-beta ngokuvamile kubonisa ukuthi i-cerebral cortex isesimweni sokujabula.I-EEG yezingane ezivamile ihlukile kweyabantu abadala.Izingane ezisanda kuzalwa zibuswa amaza ane-amplitude ephansi enensayo, futhi imvamisa yamaza obuchopho kancane kancane ikhula ngokuya ngeminyaka.
①α wave: imvamisa 8～13Hz, amplitude 10～100μV.Zonke izifunda zobuchopho zine, kodwa ezisobala kakhulu esifundeni se-occipital.Isigqi se-alpha siwumsebenzi oyinhloko we-EEG evamile kubantu abadala nasezinganeni ezindadlana lapho amehlo azo ephapheme futhi evalekile, futhi isigqi se-alpha wave ezinganeni sibonakala kancane kancane ngokuya ngeminyaka.
②β wave: imvamisa ingu-14～30Hz, futhi i-amplitude icishe ibe ngu-5～30/μV, esobala kakhulu ezifundeni ezingaphambili, zesikhashana nezimaphakathi.Ukwanda komsebenzi wengqondo kanye nesasasa lomzwelo.Cishe u-6% wabantu abajwayelekile basenesigqi se-beta ku-EEG erekhodiwe ngisho noma bezinzile ngokwengqondo futhi amehlo evaliwe, okubizwa nge-beta EEG.
③Theta wave: imvamisa 4～7Hz, amplitude 20～40μV.
④δ igagasi: imvamisa 0.5～3Hz, amplitude 10～20μV.Ngokuvamile kuvela esiphongweni.