两种等亮度不同运动图形刺激下的交替OKN眼动

ALTERNATE CONTROL OF OPTOKINETIC NYSTAGMUS EYE-MOVEMENTS BY TWO DIFFERENT ISOLUMINANT MOVING CHROMATIC PATTERNS

等亮度彩色运动条纹产生视动震颤（ＯＫＮ）眼动反应揭示了ＯＫＮ眼动控制系统中存在颜色通道；而在两个相反方向运动的等亮度彩色运动条纹图象同时显示刺激时能引起交替的两个方向的ＯＫＮ跟踪眼动。故表明了在ＯＫＮ眼动控制系统中各个颜色通道交替地控制产生ＯＫＮ眼动反应。

Optokinetic nystagmus (OKN) eye movements can be elicited by isoluminant moving glatings which consist of only different color.The experimental data indicate the existence of chromatic channels for motion detection in the optokinetic system.(2)When the stimuli are two different isoluminant chromatic gratings moving moving in opposite din,OKN can be evoked alternately by each isoluminant cbornatic moving gratingS.There results reveal the atemate control mechanism of OKN system while tWo motion signals are input through different color channels.