Reinholz Julia, Pollmann Stefan
Day Clinic of Cognitive Neurology, University of Leipzig, Leipzig, Germany.
Neurosci Lett. 2007 Jan 29;412(2):123-8. doi: 10.1016/j.neulet.2006.11.004. Epub 2006 Nov 22.
Bilateral redundant information often leads to improved detection performance compared to only unilateral input. This experiment investigates redundancy effects at the level of object processing in behavioral and functional imaging data. Subjects received different combinations of categorical information presented to both visual hemifields simultaneously. For pictures of faces as well as for pictures of buildings, response latencies were faster when two pictures from the same object category were presented compared to two pictures from different categories. This behavioral advantage was accompanied by increased activation in the respective object-selective areas, i.e. in the Fusiform Face Area (FFA) for pictures of faces and in the Parahippocampal Place Areas (PPAs) for pictures of buildings. These results suggest an involvement of visual object-selective areas in the behavioral redundancy gain.
与仅单侧输入相比，双侧冗余信息通常会带来更好的检测性能。本实验在行为和功能成像数据中研究了物体处理层面的冗余效应。受试者同时接收呈现给两个视觉半视野的不同类别信息组合。对于面部图片以及建筑物图片，与呈现来自不同类别的两张图片相比，当呈现来自同一物体类别的两张图片时，反应潜伏期更快。这种行为优势伴随着相应物体选择性区域激活增加，即对于面部图片，梭状回面孔区（FFA）激活增加；对于建筑物图片，海马旁回位置区（PPA）激活增加。这些结果表明视觉物体选择性区域参与了行为冗余增益。
