VEP test hi eng nge ni? Engvangin nge he test hi tih a nih? (Visual Evoked Potential Test) tih a ni.

A châng chuan i mit hmuhnaah inthlâk danglamna tlem te, i mit a fiah lo va, a nih loh leh i mit a na em? I doctor chuan VEP tih test nei turin a ti che a ni mai thei. Tlemte chuan hlauhna leh hriat duhna neiin, "He test hi eng nge ni?" Mahse, lungngai suh, vawiin hian he VEP test hi eng nge a nih, eng nge a zawn, engtin nge a tih tih hi awlsam tak leh friendly takin kan sawi dawn a ni.

A awlsam zawngin, he VEP test hi eng nge ni?

I mit chu camera pahnih angin ngaihtuah rawh. Heng camera-te hian an hmuh, chu chu hmuh theiha hriatna (visual information) hi thluak lamah thawn a ngai a ni. A tirh hunah chauh chuan chu thil chu eng nge a nih chiang takin kan hrethiam thei ang. Chuvangin, he VEP (Visual Evoked Potential) test hi i mit leh i thluak inkara he inbiakpawhna kawng hi a thawk tha em tih hriat nan hman a ni.

A awlsam zawngin, he test hian i thluak hmun (visual cortex) nena inzawm (visual cortex) hian visual stimulus, chu chu image i en hian eng ang electrical signal nge a chhuah tih a teh a ni.

Heng zawng zawng hi mit leh thluak inkara inbiakpawhna kawng, a nih loh leh hmuh theihna kawng, a mi an ni:

• Mit: Thil kan hmuhna hmun.
• Optic Nerves: Mit atanga thluak thlenga information phur thei cable ang chi.
• Optic Chiasm: Thluak chhunga hmun bik, mit pahnih atanga nerve fiber te inzawmkhawmna hmun.
• Optic Tract: Mit nerve atanga thluak thlenga thuchah thawn chhuahna kawng.
• Optic Radiation: He pathway-a thil dang pakhat.
• Cerebral Cortex: A tawpah chuan he thu hi a process a, "Here is a chair" emaw "Here is mom" emaw tih hrethiamtu thluak hmun a ni.

He kawngpui zawng zawngah hian khawi hmunah pawh harsatna tenau emaw, daltu emaw a awm chuan VEP test-ah hian a danglamin a lang ang.

Engvangin nge doctor chuan VEP test neih a rawt ang?

VEP test order a nih theih chhan hrang hrang a awm. A bik takin, i mit hmuhna tichhe thei damdawi lam thila rinhlelhna a awm chuan i doctor chuan he test hi a ti thei ang. Condition pakhat diagnose-na atan emaw, condition awm tawh dinhmun hriatthiamna atan emaw a pui thei bawk.

He test hian a hriat theihna tura a puih theih damdawi lam dinhmun pawimawh ber berte chu a hnuaia table hi en la.

Engtin nge he test hian hna a thawh?

Hei hi a takah chuan thil awlsam tak, hrehawm lo tak a ni. I lu-ah sensor te te i bun tir ang tih han ngaihtuah teh. Damdawi lamah chuan heng electrode te hi kan ti a ni.

Heng metal disc ang chi electrode te te hi hmun bik takah i sam ah an dah thin. Tichuan, monitor hmaah i thu a. Chu screen-ah chuan checkerboard pattern eng mawi tak a rawn lang a, a bo ta a ni.

I en chuan i mit chuan chu thlalak chu a hmu a, chu thu chu optic nerve kaltlangin thluak lamah a thawn chhuak a ni. Chu signal chu thluak chuan a dawn chuan thluak cell inkarah electrical activity a awm a. Lu-a electrode dah chuan chu electrical activity chu a teh a, machine-ah a record a ni. He test hi EEG (Electroencephalogram) machine hmanga tih a ni tlangpui a, chu chuan thluaka electrical wave a record thin.

He machine hian mitin a hmuh tirh atang khan thluak hian thlalak a chhan let theih hun chhung a teh a, chu chhanna chu eng chen nge a chak tih a teh bawk. Chu chhanna chu wave pattern angin record a ni. Specialist chuan heng wave pattern te hi a zirchiang a, a tlai emaw, a dik lo emaw a awm leh awm loh a zawng thin.

Test atan engtin nge kan inbuatsaih ang?

Hei hian inbuatsaihna a ngai lo. Mahse, test hma ni khatah hengte hi zawm a pawimawh:

• I sam chu uluk takin silfai la, fai takin vawng reng rawh. Shampoo la, tuiin uluk takin silfai la, vawt rawh.
• Test ni hian i sam ah oil, gel, hair spray engmah hnawih suh. Heng thilte hi i sam ah i neih chuan electrode te hian thluak signal te chu a pick up tha thei dawn lo.
• I doctor emaw damdawi in emaw chuan hemi chungchangah hian thupek dang a pe ang che. Engkim ngun takin ngaithla la, zawm rawh. Zawhna i neih chuan zawh hreh ngai suh.

Test neih chhung hian eng nge thleng?

Exam room chhunga i luh chuan thil hlauhawm tak i tawng lovang.

1. Pakhatnaah chuan technician pakhatin chair-ah nuam takin a thut tir ang che.

2. Tichuan, electrode te chu i lu vun hmun bik ah glue chi bik hmangin i dah a. He glue hi awlsam takin a hnuah lakchhuah theih a ni.

3. A dawtah chuan i mit pakhat chu patch in a khuh ang.

4. I hmaa screen-a chessboard pattern lo lang chu uluk taka ngaihven turin an ti ang che.

5. Mit pakhat hmanga test zawh a nih chuan mit dang nen pawh hetiang bawk hian test nawn leh a ni.

Test pumpui hi minute 60 vel a ni thei . Hemi chhung zawng hian natna engmah i hre lovang .

Test report hian eng nge a sawi?

Test atanga waveform lo awmte chu neurologist-in a zirchiang a, mit atanga signal lo lut chu thluak in a chhan hun chhung (latency) leh chu chhanna chakna (amplitude) ang chi thil te a teh thin.

Entirnan, Multiple Sclerosis (MS) ang dinhmunah chuan nerve chhehvela myelin sheath chu a chhe a, signal kal chakna chu a ti hniam a ni. Hei hian thluak hian VEP test (delayed response) a chhanna atan a tlangpui aia rei a ti rei thei a ni. Hei hian doctor hnenah natna chungchangah clue pawimawh tak a pe thei a ni.

Specialist chuan hei hi a zirchiang ang a, report kimchang tak a siam ang a, chu chu i enkawltu doctor hnenah a thawn ang. Chumi hnuah chuan i doctor chuan report chu a hrilhfiah ang che. Test dang neih belh a ngai em tih te, a hnuaia hmalakna tur awm tur te pawh a hrilh bawk ang che.