The characteristics of multifocal visual evoked potential in healthy individuals

VernacularTitle:正常人多焦视觉诱发电位的特征
Author: Xiaopeng HU ; Shizhou HUANG ; Shixian LONG
Publication Type:Journal Article
Keywords: Evoked potentials, visual/physiology
From: Chinese Journal of Ocular Fundus Diseases 2003;0(05):-
CountryChina
Language:Chinese
Abstract: Objective To investigate the characteristics of multifocal visual evoked potential (mf-VEP) in healthy individuals, and provide normal reference values for its clinical application. Methods The mf-VEP of 37 healthy individuals (70 eyes) were examined by VERIS Science TM 4.0. The visual stimulus was a dart board with patterns consisted of 60 patches spanning a 25? visual field. The length of m-sequence was 2 14-1. The results were recorded by bipolar occipital straddle. The signal was amplified 100 K and was put through a band-pass filter between 3 and 100 Hz. The first slice of the second order kernel was analyzed by VERIS software. The summed responses of fields with different stimulus were analyzed and compared according to different ages, genders and eyes. Results The latencies and response densities of amplitude had statistically significant differences both in dimidiate and quartered field(P 0.05). Conclusions The mf-VEP of healthy individuals can reflect the VEP at different field locations objectively with its specific physiological characteristics, which may provide normal reference values for its clinical application.