Bai Shuwei, Liu Wenyan, Guan Yangtai
Department of Neurology, The Second Affiliated Hospital of Xinjiang Medical University, Urumqi, China.
Department of Neurology, Renji Hospital, Shanghai Jiaotong University Medical School, Shanghai, China.
Front Aging Neurosci. 2021 Oct 14;13:717002. doi: 10.3389/fnagi.2021.717002. eCollection 2021.
Drawing is a comprehensive skill that primarily involves visuospatial processing, eye-hand coordination, and other higher-order cognitive functions. Various drawing tasks are widely used to assess brain function. The neuropsychological basis of drawing is extremely sophisticated. Previous work has addressed the critical role of the posterior parietal cortex (PPC) in drawing, but the specific functions of the PPC in drawing remain unclear. Functional magnetic resonance imaging and electrophysiological studies found that drawing activates the PPC. Lesion-symptom mapping studies have shown an association between PPC injury and drawing deficits in patients with global and focal cerebral pathology. These findings depicted a core framework of the fronto-parietal network in drawing tasks. Here, we review neuroimaging and electrophysiological studies applying drawing paradigms and discuss the specific functions of the PPC in visuospatial and sensorimotor aspects. Ultimately, we proposed a hypothetical model based on the dorsal stream. It demonstrates the organization of a PPC-centered network for drawing and provides systematic insights into drawing for future neuropsychological research.
绘画是一项综合技能，主要涉及视觉空间处理、眼手协调以及其他高级认知功能。各种绘画任务被广泛用于评估脑功能。绘画的神经心理学基础极其复杂。先前的研究已经探讨了顶叶后皮质（PPC）在绘画中的关键作用，但PPC在绘画中的具体功能仍不清楚。功能磁共振成像和电生理研究发现，绘画会激活PPC。病变-症状映射研究表明，在患有全局性和局灶性脑部病变的患者中，PPC损伤与绘画缺陷之间存在关联。这些发现描绘了绘画任务中额顶叶网络的核心框架。在此，我们回顾应用绘画范式的神经影像学和电生理研究，并讨论PPC在视觉空间和感觉运动方面的具体功能。最终，我们基于背侧通路提出了一个假设模型。它展示了一个以PPC为中心的绘画网络的组织架构，并为未来的神经心理学研究提供了关于绘画的系统性见解。
