Microarchitecture and connectivity of the parietal lobe.
Microarchitecture and connectivity of the parietal lobe.
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DOI：
10.1016/b978-0-444-63622-5.00003-6
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发表时间：
2018-01-01
影响因子：
--
通讯作者：
Zilles, Karl
中科院分区：
文献类型：
--
作者：
Caspers, Svenja;Zilles, Karl
本章总结了目前的知识顶叶的结构隔离的基础上，细胞，髓，和receptorarchitectonic研究，以及与其他皮质和皮质下结构的连接，这个大脑区域。人类顶叶皮层的前部包括躯体感觉区3a、3b、1和2，而后部在上级和下顶叶小叶中包含七个多峰区。现有的人类顶内沟的细胞结构图还不能提供完整的图像。骨髓和受体结构分析在很大程度上证实，但也进一步区分细胞结构图。随着扩散成像和功能连接研究的出现，已经实现了对结构和功能组织的进一步了解。这表明后顶叶皮层是连接视觉和（前）额叶皮层以及颞叶和部分额叶皮层的解剖网络中的关键节点。在这里，上级纵束及其组成部分发挥了主要作用，连同弓状和中间纵束。与皮质下结构，特别是基底神经节和丘脑核的主要连接，进行了讨论。最后，强调了顶骨区域的精确地图对于在结构和功能连接性研究中定义种子区域的重要性。
This chapter summarizes current knowledge on the structural segregation of the parietal lobe based on cyto-, myelo-, and receptorarchitectonic studies, as well as the connectivity of this brain region with other cortical and subcortical structures. The anterior part of the human parietal cortex comprises the somatosensory areas 3a, 3b, 1, and 2, whereas the posterior part contains seven multimodal areas in both the superior and inferior parietal lobules. Available cytoarchitectonic maps of the human intraparietal sulcus do not provide a complete picture yet. Myelo- and receptorarchitectonic analyses largely confirm but also further differentiate the cytoarchitectonic maps. With the advent of diffusion imaging and functional connectivity studies, further insight into the structural and functional organization has been achieved. It shows that the posterior parietal cortex is a key node in anatomic networks connecting visual with (pre)frontal cortices, and temporal with parts of frontal cortices. Here, the superior longitudinal fascicle and its components play a major role, together with the arcuate and middle longitudinal fascicles. Major connections with subcortical structures, particularly the basal ganglia and thalamic nuclei, are discussed. Finally, the importance of precise maps of parietal areas for defining seed regions in structural and functional connectivity studies is emphasized.