正常人视觉运动觉的测试

The test of motion perception in normal subjects

目的研究我国正常人视觉运动觉特性。方法在ＰＣ兼容机上，应用运动觉测试软件，由微机控制，于ＶＧＡ显示器产生棒状垂直视标，测定年龄１１～６８岁正常人５６例（１１２只眼）的视觉运动觉。结果当视标作２个象素的水平运动，从１０岁组至３０岁组，随年龄增长，视觉运动觉逐渐上升。４０岁以后年龄组逐渐降低，４个象素、６个象素水平运动和＞４０Ｈｚ闪烁运动状态不受年龄影响；性别和眼别与运动觉无相关关系。结论确定了我国正常人的运动觉特性，提供了正常参考值。

Objective To study the properties of motion perception (MP) of normal Chinese subjects.Method MPs were tested for 56 cases (112 eyes) of normal subjects,their ages ranging form 11 years to 68 years,by using vertical moving bars generated on VGA monitor in a PC compatible computer.Results MPs were affected by age when the bars moved horizontally for 2 pixels,the ratios of MP were increased with age growing from 10 year group to 30 year group,then the ratios of MP were gradually decreased from 40 year group. MPs were not afected by age under the hopizontally moving conditions of 4 pixels and 6 pixels and >40 Hz flicker movement. There were no relationships between either MP and sex or MP and eye side difference.Conclusions The characteristics of MP are determined and the normal reference values are provied in normal Chinese subjects