Effect of experimental scotoma on multifocal visual evoked potential
- VernacularTitle:实验性暗区对多焦视觉诱发电位的影响
- Author:
Xiaopeng HU
;
Shizhou HUANG
;
Futian JIANG
;
Shixian LONG
;
Jiongji LIANG
;
Dezheng WU
;
Lezheng WU
- Publication Type:Journal Article
- Keywords:
multifocal visual evoked potential;
experimental scotoma;
normal individual
- From:Journal of Third Military Medical University
2003;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the influence of experimental scotoma on multifocal visual evoked potential (mf-VEP). Methods The mf-VEP of 10 healthy individuals (20 eyes) was measured with VERIS Science 4.0. Every eye was measured for 3 times. The right eye was measured with full field stimulation and upper hemi-field or lower hemi-field masked. The left eye was measured with full field stimulation and central three-rings area or lower nasal field masked. The first slice responses of the second order in different field were analyzed and compared by VERIS software. Results The mf-VEP in masked area was undetectable or obviously decreased in all subjects. In most unmasked field, the amplitudes of mf-VEP were not changed, except that in some place decreased slightly with statistically significant difference in comparison to the full field stimulation mode. Conclusion mf-VEP is influenced with experimental scotoma. The mf-VEP changes are consistent with the visual field masked.
