镜像等效或守恒及其打破：从行为到认知神经机制的研究证据

镜像等效或守恒是动物与人类个体对两侧对称自然物体的一种进化自适应加工。但是, 这种知觉特性会妨碍包含镜像字符的文字阅读学习。阅读者有必要学会利用镜像泛化抑制的“去学习”机制, 打破镜像等效或守恒, 以获得识别镜像字符的能力。这一过程中, 左侧梭状回皮层通过与早期视觉皮层、顶叶皮层和口语脑网络的交互作用, 逐渐发展出一个可以识别镜像字符的视觉词形区(visual word form area, VWFA)。今后的研究需要关注两半球及其连合纤维在镜像等效或守恒加工中的作用、镜像泛化与抑制的详尽加工机制及其对镜像书写的影响、正常汉语儿童的汉字镜像泛化加工等问题。

Mirror equivalence or invariance and its breaking: Evidence from behavioral to cognitive neural mechanism

Mirror equivalence or invariance, also known as mirror generalization or symmetry generalization, is a perceptual property in which individuals regard the left-right mirror of a visual perception object as the same stimulus. Experimental evidence of animal behavior and human cognition shows that mirror equivalence or invariance is an evolutionary adaptive process of animal and human individuals to the bilateral symmetry of natural objects, which has obvious advantages in reducing cognitive learning load and survival pressure. Recent studies on cognitive neural mechanism finds that mirror equivalence or invariance is hierarchically processed in the ventral visual pathway of primates, and the fusiform gyrus cortex in the human brain is a key region for processing mirror equivalence or invariance information of objects or faces.