The symmetry of multifocal visual evoked potential between both eyes in normal subjects
- VernacularTitle:多焦视诱发电位的双眼对称性分析
- Author:
Shizhou HUANG
;
Xiaopeng HU
;
Shixian LONG
- Publication Type:Journal Article
- Keywords:
Electrophysiology;
Multifocal visual evoked potential;
Normal
- From:
Chinese Journal of Ocular Fundus Diseases
1996;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo analyze the symmetry of multifocal visual evoked potential (mfVEP) between both eyes in normal subjects. Methods The monocular mfVEP of both eyes in thirty-six normal subjects (72 eyes) was tested with VERIS Science 4.0. The stimulus was the pattern reversal dart array consisted of 60 sectors each included 16 black-white reverse patterns. The visual stimulation was controlled by the binary pseudo-random m-sequences and subtended approximately 25 degrees. Results There existed no statistically significant difference of P1 latencies and amplitudes between correspondent quadrant visual field of both eyes. The data difference of the ipsilateral quadrant visual fields was greater than those of the correspondent quadrant visual field. The comparison among four quadrant visual fields in right eye or left eye each showed that there was statistically significant difference of P1 latencies between the superionasal quadrant visual field and inferiotemporal or inferionasal quadrant visual fields. Conclusions The symmetry of normal mfVEP is more dominant in retina than that in visual cortex.
