标题： 直接观察人类视觉中左右镜像的交叉半球传递 显示英文标题

标题： Direct observation of the crossed interhemispheric transfer of the left-right mirror-images in human vision

摘要： 对称性破坏在动物和人类大脑中很常见，缺乏不对称性通常会干扰行为和认知功能。 特别是，年幼儿童中镜像混淆的普遍性，这种现象常常持续到诵读困难中，已经得到证实。 然而，这些对称的镜像以及它们的感知或记忆性质仍然存在争议。 在这里，我们使用噪声激活后像方法，证明有镜像的诵读困难者是解决这一谜题的理想人选。 事实上，在单眼注视之后，主要的后像仅通过这只眼睛被感知，而镜像也仅通过另一只保持闭合的眼睛被感知。 我们推断，胼胝体的半球间连接必然投射到初级皮层4层的优势柱上，这是唯一严格分离的层，并且是交叉的。 我们的结果表明，感知的主要图像和镜像在空间和时间上都被解析。 显示英文摘要

摘要： Symmetry breaking is common in animal and human brains where the lack of asymmetry often perturbs behavioral and cognitive functions. In particular, the ubiquity of mirror-image confusion in young children, which often persists in dyslexia, is established. However, the very existence of these symmetric mirror-images and their perceptual or memory nature remain controversial. Here, using the noise-activated afterimage method, we demonstrate that a dyslexic with mirror-images is an ideal candidate for solving the mystery. Indeed, after a monocular fixation, the primary afterimages are perceived alone through this eye, while the mirror-images are also perceived alone, but exclusively through the other eye which has remained closed. We deduce that the callosal interhemispheric connections are necessarily projected on the dominance columns of layer 4 of the primary cortex, the only layer where segregation is strict, and are furthermore crossed. Our results show that perceived primary and mirror images are spatially and temporally resolved.