Development of a system to analyze dynamic variations of the eye fixation related potentials.

眼球运动记录显示了一个阶梯状的模式，包括眼球跳动（saccades）和眼睛注视，当被试注视某物时。特殊事件相关的脑电位称为眼固定相关电位（EFRP）是通过平均眼跳终止时的脑电图获得的。在之前的项目中，我们已经完成了一个分析EFRP的新系统的原型。该系统的独特之处在于，我们可以在受试者移动眼睛的情况下测量ERP。该系统可以对头部多个城市的脑电图数据进行分析，并能实时显示与大脑活动相关的地形图。该系统可以对头部14个城市的脑电图数据进行滑动平均处理，并实时显示与大脑活动相关的地形图。该系统申请了专利。潜伏期：某一潜伏期的地形图；即，在以前的系统中，实时显示大约80ms。EFRP在潜伏期分为几个组成部分。本项目的目的是开发一种新的系统来显示地形图在大约三个潜伏期，以便更详细地分析大脑中的心理和神经活动。系统按计划顺利完成。该系统由一台具有4个cpu和软件的高速计算机构成。每次扫视发生时，屏幕上实时显示三幅地形图。运动地形图随感觉、知觉、注意等心理因素的变化而变化。

Eye movements record shows a step-like pattern consisting of saccadic eye movements (saccades) and eye fixations, when a subject looks at something. The special event related brain potentials called the eye fixation related potential (EFRP) is obtained with averaging EEGs at terminations of saccades. We have completed a prototype of the new system for analyzing the EFRP in the previous project. The distinctive feature of the system is that we can measure the ERP under the conditions where a subject moves eyes. This system can analyze EEG data from many cites on the head and can display the topographical map related to the brain activities in real time. This system can process EEG data from 14 cites on the head with a sliding average method and can display the topographical map related to the brain activities in real time. The system was applied for a patent. A topographical map at a single latent period; i.e. around 80ms was displayed in real time with the previous system.EFRP is classified into several components at latent periods. The purpose of the present project was to develop a new system to display topographical maps at around three latent periods in order to analyze in more detail psychological and neural activities in the brain. The system was successfully completed as planed. The system is constructed by a high speed computer with four CPUs and soft ware. Three topographical maps are displayed on a screen in real time when every saccade occurs. The moving topographical maps changed with such psychological factors as sensation, perception and attention.