The role of the saccade target object in the perception of a visually stable world

被引:114
作者
Currie, CB
McConkie, GW
Carlson-Radvansky, LA
Irwin, DE
机构
[1] Rutgers State Univ, Vis Res Lab, Piscataway, NJ 08854 USA
[2] Univ Illinois, Urbana, IL 61801 USA
[3] Univ Notre Dame, Notre Dame, IN 46556 USA
来源
PERCEPTION & PSYCHOPHYSICS | 2000年 / 62卷 / 04期
关键词
D O I
10.3758/BF03206914
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Although the proximal stimulus shifts position on our retinae with each saccade, we perceive our world as stable and continuous. Most theories of visual stability implicitly assume a. mechanism that spatially adjusts perceived locations associated with the retinal array by using, as a parameter, extraretinal eye position information, a signal that encodes the size and direction of the saccade. The results from the experiment reported in this article challenge this idea. During a participant's saccade to a target object, one of the following was displaced: the entire scene, the target object, or the background behind the target object. Participants detected the displacement of the target object twice as frequently as the displacement of the entire background. The direction of displacement relative to the saccade also affected detectability. We use a new theory, the saccade target theory (McConkie & Currie, 1996), to interpret these results. This theory proposes that retinal (as opposed to extra-retinal) factors, primarily those concerning the saccade target object, are critical for the detection of intrasaccadic stimulus shifts.
引用
收藏
页码:673 / 683
页数:11
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