Pei Francesca, Pettet Mark W, Vildavski Vladimir Y, Norcia Anthony M
Department of Developmental Neuroscience, Stella Maris Institute, Pisa, Italy.
Neuroreport. 2005 Sep 8;16(13):1427-30. doi: 10.1097/01.wnr.0000177003.12322.9b.
Glass patterns are a type of moiré created when a random-dot field is overlaid with a rotated, translated or dilated copy. The overall form of the moiré cannot be detected using local processing mechanisms, and because of this, Glass patterns are useful probes of global form processing. Here, we use event-related potentials to show that certain global organizations (concentric structure created by rotation and radial structure produced by dilation) produce much larger brain responses than others (linear structure created by translation). The results are consistent with the existence of specialized form processing mechanisms in the extrastriate cortex.
格拉斯图案是一种莫尔条纹，当一个随机点场与一个旋转、平移或缩放的副本叠加时就会产生。莫尔条纹的整体形式无法通过局部处理机制检测到，因此，格拉斯图案是全局形式处理的有用探针。在这里，我们使用事件相关电位来表明，某些全局组织（由旋转产生的同心结构和由缩放产生的径向结构）比其他组织（由平移产生的线性结构）产生更大的大脑反应。这些结果与纹外皮层中存在专门的形式处理机制相一致。
