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在视觉表象构建过程中,新招募的视觉线索与预先存在的视觉线索之间的竞争。

Competition between newly recruited and pre-existing visual cues during the construction of visual appearance.

作者信息

Backus Benjamin T, Haijiang Qi

机构信息

Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104-6228, USA.

出版信息

Vision Res. 2007 Mar;47(7):919-24. doi: 10.1016/j.visres.2006.12.008. Epub 2007 Feb 15.

Abstract

During perception, conflicting visual cues often trade against each other. Recent cue recruitment experiments show that the visual system can be conditioned to use artificial visual cues during the perception of a bistable stimulus. Does the visual system treat the new cue as an independent source of information, separate from the long-trusted cues that were used to train it? If so, presence of the long-trusted cue should not be sufficient to block the new cue's effect. Here, we show that a newly recruited cue (stimulus location) and a long-trusted, pre-existing cue (binocular disparity) trade against each other: they contribute simultaneously to the direction of perceived 3D rotation of a Necker cube. We also show that the new position cue was based primarily on retinal position, so early visual areas may mediate the cue's effect.

摘要

在感知过程中,相互冲突的视觉线索常常相互竞争。最近的线索招募实验表明,视觉系统可以被训练在感知双稳态刺激时使用人工视觉线索。视觉系统会将新线索视为独立于用于训练它的长期可靠线索的信息源吗?如果是这样,长期可靠线索的存在应该不足以阻止新线索的作用。在这里,我们表明新招募的线索(刺激位置)和长期可靠的、预先存在的线索(双眼视差)相互竞争:它们同时影响内克尔立方体感知到的3D旋转方向。我们还表明,新的位置线索主要基于视网膜位置,因此早期视觉区域可能介导了该线索的作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09c6/1868499/30a8d20cd9e8/nihms20392f1.jpg

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