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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov ntsiab lus ntawm Vestibulo - ocular reflex thiab nystagmus
Nystagmus yog ib qho mob ntawm qhov muag tsis pom kev, tau txais thaum yau los yog tom qab hauv lub neej, uas yuav ua rau txo qis lossis tsis pom kev. Vim yog qhov tsis tuaj yeem txav ntawm lub qhov muag, nws feem ntau hu ua seev cev qhov muag.
Ntawm no, yuav ua li cas vestibulo ocular reflex ua haujlwm?
Vestibulo - ocular reflex (VOR), qhov muag txav uas ua haujlwm kom ruaj khov saib los ntawm kev tawm tsam ntawm lub taub hau. Nyob rau hauv VOR lub semicircular kwj dej ntawm lub puab pob ntseg ntsuas kev sib hloov ntawm lub taub hau thiab muab ib tug teeb liab rau lub oculomotor nuclei ntawm lub hlwb, uas innervate lub qhov muag nqaij.
Tsis tas li, dab tsi ua rau vestibulo ocular reflex? Cov vestibulo - ocular reflex (VOR) yog a rov ua dua , qhov twg qhib ntawm lub vestibular system ntawm lub pob ntseg ua qhov muag txav. Nws tuaj yeem tau txais los ntawm caloric (kub lossis txias) txhawb ntawm lub pob ntseg sab hauv, thiab ua haujlwm txawm tias nyob hauv qhov tsaus ntuj tag nrho lossis thaum lub qhov muag raug kaw.
Hauv qhov no, vestibular ocular dysfunction yog dab tsi?
Cov lub vestibular system muaj xws li cov seem ntawm pob ntseg thiab lub hlwb uas pab tswj kev sib npaug thiab qhov muag txav. Yog tias lub cev puas tsuaj los ntawm kab mob, laus, lossis raug mob, lub vestibular Cov kab mob tuaj yeem tshwm sim, thiab feem ntau cuam tshuam nrog ib lossis ntau dua ntawm cov tsos mob no, ntawm lwm tus: Vertigo thiab kiv taub hau.
Upbeating nystagmus txhais li cas?
Nystagmus zoo piav qhia txog qhov muag qhov muag nyob qhov twg lub qhov muag drift down thiab ua nce kho kom haum (beats). Rau cov neeg nyiam mus rau nqaij sai, muaj yog feem ntau tsis heev kawm los ntawm qaug zog upbeating nystagmus , tab sis muaj zog upbeating nystagmus yog feem ntau tshwm sim los ntawm kev puas hlwb.
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