眼跳任务中的偏心距效应  

ECCENTRICITY EFFECT IN SACCADIC TASKS

作　　者：田静[1] 王敬欣[1] 张赛[2] 

机构地区：[1]天津师范大学心里与行为研究院,天津300074 [2]武警医学院附属医院,天津300162

出　　处：《心理与行为研究》2011年第4期286-290,314,共6页Studies of Psychology and Behavior

基　　金：天津市科技计划(09ZCZDSF04600)项目;教育部人文社会科学青年基金(10YJCXLX058)项目

摘　　要：采用完全被试内设计,控制了眼跳任务类型(朝向眼跳、反向眼跳)和目标偏心距水平,考察了大学生在两种眼跳任务中的偏心距效应,即目标刺激相对于屏幕中心的距离对于眼跳过程的影响。研究结果发现:(1)反向眼跳任务中的首次眼跳方向错误率显著高于朝向眼跳,眼跳潜伏期也显著较长。(2)在朝向和反向眼跳过程中,都出现了目标的偏心距效应,即随着目标偏心距的增大,眼跳潜伏期缩短,眼跳落点视角增大。In current research, EyeLink Ⅱ eye tracker was used to explore the eccentricity effect in pro- and antisaccade tasks of university students, which means the systematical influences on saccade performance of the eccentricity of target stimulus in saccadic tasks. The design was a within-subject one, with saccade task and target eccentricity both as variables. The results showed： （1） antisaccade task was more difficult than prosaccade task, with a higher direction error rate and a longer saccade latency of the first saccade in antisaccade task; （2） there was an eccentricity effect in both prosaccade and antisaccade tasks, that is, saccade latency and amplitude both increased with the increasing of target eccentricity.

关 键 词：眼跳 朝向眼跳 反向眼跳 偏心距效应 

分 类 号：B842.1[哲学宗教—基础心理学]