Ka'idar EEG?

Ƙirƙiri da rikodin EEG:

Ana samun EEG gabaɗaya ta hanyar lantarki a saman fatar kai.An yi imani da tsarin samar da gashin kai mai yuwuwa: lokacin da aka yi shiru, dendrites apical na sel pyramidal - dukkanin tantanin halitta a cikin axis na jikin tantanin halitta suna cikin yanayi mara kyau;lokacin da motsin motsa jiki ke yadawa zuwa ƙarshen tantanin halitta, yana sa ƙarshen ya ɓace.Bambanci mai yuwuwa a cikin tantanin halitta yana haifar da tsarin filin lantarki na bipolar, tare da halin yanzu yana gudana daga wannan ƙarshen zuwa wancan.Tunda duka cytoplasm da ruwa na extracellular sun ƙunshi electrolytes, halin yanzu kuma yana wucewa a waje da tantanin halitta.Ana iya yin rikodin wannan aikin lantarki ta amfani da na'urorin lantarki.A gaskiya ma, yuwuwar sauye-sauye a cikin EEG a kan fatar kai shine haɗuwa da yawancin filayen lantarki na bipolar.EEG baya nuna aikin lantarki na kwayar jijiyoyi, amma a maimakon haka yana yin rikodin jimlar ayyukan lantarki na ƙungiyoyin jijiyoyi da yawa a cikin yanki na kwakwalwa da na'urorin lantarki ke wakilta.
Asalin abubuwan da ke cikin EEG: Siffar kalaman EEG ba ta da ka'ida sosai, kuma mitar sa tana canzawa cikin kewayon kusan sau 1 zuwa 30 a cikin daƙiƙa guda.Yawancin lokaci wannan canjin mitar yana kasu kashi 4: yawan igiyoyin delta shine sau 0.5 zuwa 3./ sec, amplitude shine 20-200 microvolts, manya na al'ada na iya yin rikodin wannan kalaman kawai lokacin da suke cikin barci mai zurfi;mitar theta wave shine sau 4-7 a sakan daya, kuma amplitude shine kusan 100-150 microvolts, manya sukan yi barci Wannan kalaman za a iya yin rikodin;Theta da delta taguwar ruwa ana kiranta a matsayin raƙuman raƙuman ruwa, kuma raƙuman ruwa na delta da theta ba a rubuta su cikin farke mutanen al'ada;mitar alpha taguwar ruwa ne 8 zuwa 13 sau a cikin dakika, da kuma amplitude ne 20 zuwa 100 microvolts.Shi ne ainihin rhythm na igiyoyin kwakwalwar manya na al'ada, wanda ke faruwa a lokacin da idanu suka farka kuma sun rufe;Mitar beta taguwar ruwa shine sau 14 zuwa 30 a sakan daya, kuma girman shine 5 zuwa 20 microvolts.Iyalin tunani ya fi fadi, kuma bayyanar raƙuman beta gabaɗaya yana nuna cewa ƙwayar ƙwayar cuta tana cikin yanayi mai daɗi.EEG na yara na al'ada ya bambanta da na manya.Neonates suna mamaye ƙananan raƙuman raƙuman raƙuman ruwa, kuma yawan igiyoyin kwakwalwa a hankali yana ƙaruwa da shekaru.
①A kalaman: mita 8～13Hz, amplitude 10 ~ 100μV.Duk yankuna na kwakwalwa suna da, amma mafi bayyane a cikin yankin occipital.Alfa rhythm shine babban aikin EEG na yau da kullun a cikin manya da manyan yara lokacin da idanunsu suka farka kuma suna rufe, kuma yanayin motsin alpha a cikin yara yana bayyana a hankali tare da shekaru.
②β kalaman: mitar ita ce 14 ~ 30Hz, kuma girman girman shine kusan 5～30/μV, wanda ya fi bayyana a yankuna na gaba, na wucin gadi da na tsakiya.Ƙaruwa a cikin ayyukan tunani da jin daɗin zuciya.Kimanin kashi 6% na mutane na yau da kullun har yanzu suna da beta rhythm a cikin EEG da aka yi rikodin ko da lokacin da suke da kwanciyar hankali da rufe idanu, wanda ake kira beta EEG.
③ Theta kalaman: mitar 4～7Hz, amplitude 20～40μV.
④δ kalaman: mita 0.5 ~ 3 Hz, amplitude 10 ~ 20μV.Sau da yawa yana bayyana akan goshi.