Martino Juan, De Lucas Enrique Marco
Department of Neurological Surgery, Hospital Universitario Marqués de Valdecilla and Instituto de Formación e Investigación Marqués de Valdecilla (IFIMAV), Avda, Valdecilla s/n, Santander, Cantabria, Spain.
Clin Anat. 2014 May;27(4):563-9. doi: 10.1002/ca.22321. Epub 2014 Jan 22.
Precise knowledge of the connectivities of the different white matter bundles is of great value for neuroscience research. Our knowledge of subcortical anatomy has improved exponentially during recent decades owing to the development of magnetic resonance diffusion tensor imaging tractography (DTI). Although DTI tractography has led to important progress in understanding white matter anatomy, the precise trajectory and cortical connections of the subcortical bundles remain poorly determined. The recent literature was extensively reviewed in order to analyze the trajectories and cortical terminations of the lateral association fibers of the brain.The anatomy of the following tracts is reviewed: superior longitudinal fasciculus, middle longitudinal fasciculus, inferior longitudinal fasciculus, inferior fronto-occipital fasciculus, uncinate fasciculus, frontal aslant tract, and vertical occipital fasciculus. The functional role of a tract can be inferred from its topography within the brain. Knowing the functional roles of the cortical areas connected by a certain bundle, it is possible to develop new insights into the putative functional properties of such connections.
精确了解不同白质束的连接情况对神经科学研究具有重要价值。近几十年来，由于磁共振扩散张量成像纤维束示踪技术（DTI）的发展，我们对皮质下解剖结构的认识呈指数级增长。尽管DTI纤维束示踪技术在理解白质解剖结构方面取得了重要进展，但皮质下束的精确轨迹和皮质连接仍未完全确定。为了分析大脑外侧联合纤维的轨迹和皮质终末，我们对近期文献进行了广泛综述。本文将对以下纤维束的解剖结构进行综述：上纵束、中纵束、下纵束、额枕下束、钩束、额斜束和枕垂直束。纤维束的功能作用可以从其在脑内的拓扑结构推断出来。了解由某一束连接的皮质区域所起的功能作用，有助于深入了解这些连接可能具有的功能特性。
