Masifunde ngovavanyo lweVEP (Visual Evoked Potential Test), oluhlola unxibelelwano phakathi kokubona kwakho nengqondo yakho.

Usenokuba uxelelwe ngugqirha ukuba, 'Singenza uvavanyo lwe -`(VEP)`?' Xa esitsho, umbuzo omncinci ufika engqondweni, akunjalo, 'Yintoni le `(VEP)`? Namhlanje siza kuthetha ngovavanyo olubizwa ngokuba luvavanyo olubonakalayo oluvuselelwe, okanye njengoko sonke sisazi, uvavanyo lwe -`(Visual Evoked Potential)` okanye lwe -`(VEP)` . Olu luvavanyo olukhethekileyo olujonga umsebenzi wengqondo yakho onxulumene nokubona. Musa ukoyika, oku akuyonto inkulu njengoko ucinga.

Yintoni kanye kanye le VEP test ijonge yona?

Kulungile, ngoku masibone ukuba olu vavanyo lwe-`(VEP)` lwenza ntoni kanye kanye . Ngamafutshane, xa ujonga into ethile, ilinganisa indlela i-cortex ebonakalayo engqondweni yakho esabela ngayo kuloo mvuselelo yokubona, oko kukuthi, nokuba ikhupha isignali yombane kwaye yenza oko ngokukhawuleza kangakanani. Oku kukwabizwa ngokuba yi-`(Visual Evoked Response)` okanye `(VER)`.

Cinga ngayo ngathi iliso lakho liyikhamera. Xa uthatha umfanekiso ngaloo khamera, kufuneka udlulisele ulwazi oluvela kuloo mfanekiso uye engqondweni yakho, akunjalo? Indlela ephethe loo myalezo ibizwa ngokuba yi-'Visual Pathway' . I-'(VEP)' ijonga ikakhulu ukuba le ndlela isebenza kakuhle na. Le ndlela yokubona ibandakanya:

• Amehlo akho ('Amehlo')
• IiNerve ze-Optic - Ezi zifana neentambo ezithwala imiyalezo esuka elisweni ukuya engqondweni. Ziyinxalenye ebaluleke kakhulu.
• I-Optic Chiasm - Le yindawo engaqhelekanga ngaphakathi kwengqondo yakho. Kulapho ezinye zee-optic nerve fibers ezivela kwelinye iliso zidibana khona nee-nerve fibers ezivela kwelinye iliso.
• Indlela ye-Optic Tract - Indlela ethwala ulwazi oluvela kwi-retina ukuya engqondweni.
• Imitha ye-Optic - Le yindlela ulwazi olubonakalayo oluvela kwi-retina yakho, kwi-optic nerve, nakwi-optic disc oludluliselwa ngayo engqondweni.
• I-Cerebral Cortex - Iziko eliphambili lokucubungula ulwazi nokuqonda ingqondo .

Ngoko ke, ukuba kukho nasiphi na isiphako okanye ingxaki kwindlela yokubona okanye kwi-cortex yokubona yengqondo yakho, singayibona kwiziphumo zovavanyo lwe-`(VEP)`.

Zeziphi izifo ezinokufunyaniswa ngovavanyo lweVEP?

Ngoku usenokuba ucinga, 'Kulungile, oku kumalunga nokujonga izinto ezinxulumene nombono, ngoko ke zeziphi izifo ezinokubonwa?' Enyanisweni, uvavanyo lwe-`(VEP)` luhlala lusetyenziselwa ukunceda ekufumaneni iimeko ezithile zempilo.Okanye njengecebiso lokukhomba kuloo ndlela.

Isizathu esiphambili sokuba oogqirha bacele olu vavanyo kukuba abantu abane- Multiple Sclerosis (MS) banokuba ne-Optic Neuritis. Kulapho olu vavanyo lubaluleke kakhulu khona.

Akunjalo nje kuphela, kodwa oku kunceda ekuchongeni ezinye iimeko ezininzi:

• Ithumba elenzeka kwi-optic nerve yakho, elibizwa ngokuba yi-glioma . Oku kudla ngokunxulunyaniswa nemeko ebizwa ngokuba yi-Neurofibromatosis type 1.
• Ukuvaleka kwendlela yakho yokubona, umzekelo, ngenxa ye -hydrocephalus okanye i-pituitary adenoma .
• Ukonakala kwendlela yokubona ngenxa yokwenzakala entloko okanye engqondweni .
• I-Toxic Optic Neuropathy, enokubangelwa ngamayeza athile okanye izinto ezinobuthi ezifana ne -carbon monoxide .
• Ezinye iintlobo ze-optic neuropathy, umzekelo , i-Anterior Ischemic Optic Neuropathy .
• Iingxaki ngebala lokubona ezibangelwa zizifo. Umzekelo, isifo sephepha se-meningeal .

Olu vavanyo lunokuvavanya nobungakanani bezinye izifo ezisele ziqatshelwe ukuba zibangela ukuwohloka kwemithambo-luvo . Eminye imizekelo yile:

• I-Multiple Sclerosis ( MS )
• I-Leber Optic Neuropathy (LON)
• I-Kjer-uhlobo lwe-Dominant Optic Neuritis (DON)
• I-Ataxia kaFriedrich

Lusebenza njani olu vavanyo lweVEP?

Kulungile, ngoku masibone ukuba olu vavanyo lwe-`(VEP)` lwenziwa njani kanye kanye, kwaye kwenzeka ntoni . Oku akukukhulu okanye akoyiki njengoko unokucinga, yinkqubo elula kakhulu.

Bancamathisela ii-electrode ezincinci ezimbalwa kwiindawo ezithile zentloko yakho, okanye ukhakhayi. Ezi zifana nezitikha ezincinci. Emva koko uboniswa isikhuthazo esibonakalayo. Ngokuqhelekileyo le yipateni yebhodi yokujonga ekhanyayo .

Ii-electrode ezinamathele entlokweni yakho zenza imiyalezo yombane (iimiyalezo) ehamba phakathi kweeseli zobuchopho bakho.Ukulinganisa. Xa loo pateni yebhodi yechess ikhanya, i-cortex yakho yokubona iyasabela kuyo kwaye izame ukuqonda olo lwazi. Ngaloo mzuzu, umsebenzi wombane engqondweni yakho urekhodwa zezo electrodes. Oogqirha benza olu vavanyo lwe-``(VEP)`` kunye ne -``Electroencephalogram`` (``EEG```) . Oko kuthetha ukuba bajonga nomsebenzi oqhelekileyo wombane wengqondo yakho.

Oko kwenziwa ngulo matshini we-`(VEP)` kukukubonisa loo mvuselelo yokubona izihlandlo ezininzi kwaye uthathe ixabiso eliphakathi lemiqondiso evela kwi-`(EEG)` ngalo lonke ixesha. Kulapho unokuvavanya ngokuchanekileyo ukusebenza kwendlela yakho yokubona. Lo matshini urekhoda iimpendulo zombane ezivela ebuchosheni bakho kwiindlela ezahlukeneyo, okanye 'imikhondo'. Uyazi, kukho 'ii-waveforms' ezithile ebuchosheni bakho (i-visual cortex), ezenzeka ngamaxesha athile xa kuphendulwa imvuselelo yokubona.

Ingcali emva koko ihlalutya la maza ukuze ibone ukuba kukho nawuphi na umsebenzi ongaqhelekanga, onokumnceda aqonde ukuba loluphi uhlobo lwengxaki olunokubakho kwicandelo lakho lokubona.

Ufanele uzilungiselele njani ngaphambi kovavanyo?

Akukho nto ifunekayo ukuba uyenze ukuze ulungiselele kakhulu olu vavanyo lwe-`(VEP)`. Kodwa kukho izinto ezimbalwa ekufuneka uzikhumbule.

Ugqirha wakho uza kukuxelela yonke into ekufuneka uyazi malunga novavanyo kunye nento omawuyenze ngaphambi kwalo. Ukuba unemibuzo okanye iinkxalabo, qiniseka ukuba uyabuza . Eyona nto ibalulekileyo kukulungiselela njengoko bethetha.

Kufuneka ugcine iinwele zakho zicocekile ngosuku olungaphambi kovavanyo, okanye ngentsasa yovavanyo. Kungcono ukuba ungahlamba iinwele zakho. Musa ukufaka naziphi na izitshizi zeenwele, iioyile, okanye iijeli ezinweleni zakho. Kuba, ukuba unayo nayiphi na kwezo zinto, inokuphazamisana nee-electrode ezinamathele entlokweni yakho zisebenza kakuhle. Yiloo nto kuphela ekufuneka uyenze. Kulula kakhulu, akunjalo?

Kwenzeka ntoni ngexesha lovavanyo?

Ekubeni kukho iintlobo ezahlukeneyo zovavanyo lwe-`(VEP)`, indlela ezenziwa ngayo inokwahluka kancinci. Kodwa kudla ngokuba ngolu hlobo:

• Ilungu labasebenzi bezonyango liza kuncamathisela inani lee -electrode, ezibonakala ngathi ziipleyiti ezincinci zesinyithi, kwiindawo ezithile zentloko yakho . Ezi zincamathiselwe ngohlobo oluthile lweglue olunokususwa lula. Ezi electrode ziqhagamshelwe kumatshini. Umatshini ngulowo unika ugqirha ulwazi malunga nomsebenzi wakho wobuchopho.
• Emva koko, uza kucelwa ukuba ugqume iliso elinye ngesiqwenga uze ujonge isikrini ngelinye iliso. Isikrini siza kubonisa isikhuthazo esikhanyayo (ngesiqhelo ipateni yebhodi yokujonga). Wakugqiba ukuvavanya iliso elinye, elinye iliso liza kuvavanywa ngendlela efanayo.

Awuyi kuva ntlungu ngelixa usenza oku. Usenokuziva ungakhululekanga kuba kufuneka uhlale kwindawo efanayo okwethutyana. Kodwa akukho nto inokubangela uxhalabe ngayo. Ungahlala uzolile.

Uvavanyo luthatha ixesha elingakanani?

Olu vavanyo lonke lungathatha malunga nemizuzu engama-60, okanye malunga neyure, ukugqitywa. Ngamanye amaxesha lunokuba ngaphantsi okanye ngaphezulu koko. Ngoko ke lungela oko kwaye ubeke ecaleni ixesha.

Zithini iziphumo zovavanyo?

Nje ukuba uvavanyo lwe-`(VEP)` lugqityiwe, ingcali iya kufunda iziphumo ngononophelo. Emva koko iya kulungiselela 'ingxelo' ize iyithumele kugqirha wakho. Kulapho ke kuphela apho ugqirha wakho aya kukuchazela khona iziphumo.

Olu vavanyo lwe-`(VEP)` lunokuchonga iingxaki ezahlukeneyo kwicandelo lakho lokubona. Ngokuxhomekeke kwingxaki, imo yee-waveforms kunye nexesha elithathayo ukuba ingqondo iphendule ukususela ngexesha elinikiweyo isikhuthazo ziya kwahluka. Umzekelo, kwiimeko 'zokususa i-myelin' ezonakalisa i-myelin sheath ye-optic nerve (ezifana ne-`(MS)`), uvavanyo lwe-`(VEP)` luya kubonisa ukuba ingqondo yakho ilibazisekile ekuphenduleni. Oku kuthetha ukuba umyalezo uthatha ixesha elide ukudlula.

Khumbula, nokuba iziphumo zolu vavanyo zibonisa into ethile, ugqirha wakho angakucela ukuba wenze ezinye iimvavanyo ukuqinisekisa oko. Ngoko ke ungoyiki ngoko nangoko. Thetha nogqirha wakho umchazele yonke into.

Ugqirha wakho uza kukuchazela ngokweenkcukacha iziphumo. Baza kukuxelela nokuba kufuneka olunye uvavanyo. Baza kukunika nesikhokelo sokuba wenze ntoni emva koko.

Okokugqibela, kufuneka ndikuxelele oku.

Uvavanyo lweVisual Evoked Potential (VEP) luvavanyo olulula, olungangenisi ntsholongwane olunokunceda ekuchongeni iimeko ezithile ezichaphazela indlela amehlo akho nengqondo yakho ezisebenza ngayo izinto ezibonakalayo. Awuyi kuva ntlungu ngexesha lovavanyo.

Ugqirha wakho uza kukuchazela yonke into ngaphambi nasemva kovavanyo. Ukuba unemibuzo okanye izinto ezikuxhalabisayo, ungoyiki ukubuza . Iqela lakho lezonyango likho ukukunceda. Ngoko ke, ukuba ugqirha wakho ukuxelela ukuba wenze uvavanyo olufana nolu, ungoyiki ngokungeyomfuneko, kulungile? Oku kukukukunceda ufumane ulwazi olubalulekileyo malunga nempilo yakho.

Uvavanyo olubonakalayo oluvela kwi - vis, uvavanyo lwe-VEP, ukubona, ukusebenza kwengqondo, indlela yokubona, izifo ze-neurological, i-Multiple Sclerosis (MS)