局部一致性:人类连接组的一种多模态、多尺度神经影像标志物。
Regional Homogeneity: A Multimodal, Multiscale Neuroimaging Marker of the Human Connectome.
作者信息
Jiang Lili, Zuo Xi-Nian
机构信息
Key Laboratory of Behavioral Science, Magnetic Resonance Imaging Research Center, Institute of Psychology, Chinese Academy of Sciences, Beijing, China Laboratory for Functional Connectome and Development, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
Key Laboratory of Behavioral Science, Magnetic Resonance Imaging Research Center, Institute of Psychology, Chinese Academy of Sciences, Beijing, China Laboratory for Functional Connectome and Development, Institute of Psychology, Chinese Academy of Sciences, Beijing, China Faculty of Psychology, Southwest University, Beibei, Chongqing, China Department of Psychology, School of Education Science, Guangxi Teachers Education University, Nanning, Guangxi, China
出版信息
Neuroscientist. 2016 Oct;22(5):486-505. doi: 10.1177/1073858415595004. Epub 2015 Jul 13.
Much effort has been made to understand the organizational principles of human brain function using functional magnetic resonance imaging (fMRI) methods, among which resting-state fMRI (rfMRI) is an increasingly recognized technique for measuring the intrinsic dynamics of the human brain. Functional connectivity (FC) with rfMRI is the most widely used method to describe remote or long-distance relationships in studies of cerebral cortex parcellation, interindividual variability, and brain disorders. In contrast, local or short-distance functional interactions, especially at a scale of millimeters, have rarely been investigated or systematically reviewed like remote FC, although some local FC algorithms have been developed and applied to the discovery of brain-based changes under neuropsychiatric conditions. To fill this gap between remote and local FC studies, this review will (1) briefly survey the history of studies on organizational principles of human brain function; (2) propose local functional homogeneity as a network centrality to characterize multimodal local features of the brain connectome; (3) render a neurobiological perspective on local functional homogeneity by linking its temporal, spatial, and individual variability to information processing, anatomical morphology, and brain development; and (4) discuss its role in performing connectome-wide association studies and identify relevant challenges, and recommend its use in future brain connectomics studies.
人们已经付出了很多努力,使用功能磁共振成像(fMRI)方法来理解人类大脑功能的组织原则,其中静息态功能磁共振成像(rfMRI)是一种越来越被认可的用于测量人类大脑内在动力学的技术。在大脑皮层分区、个体间差异和脑部疾病研究中,基于rfMRI的功能连接(FC)是描述远距离或长距离关系最广泛使用的方法。相比之下,局部或短距离的功能相互作用,尤其是在毫米尺度上,虽然已经开发了一些局部FC算法并应用于发现神经精神疾病状态下基于大脑的变化,但很少像远距离FC那样被研究或系统综述。为了填补远距离和局部FC研究之间的这一空白,本综述将:(1)简要回顾人类大脑功能组织原则的研究历史;(2)提出局部功能同质性作为一种网络中心性,以表征脑连接组的多模态局部特征;(3)通过将其时间、空间和个体变异性与信息处理、解剖形态和大脑发育联系起来,从神经生物学角度阐述局部功能同质性;(4)讨论其在进行全连接组关联研究中的作用,识别相关挑战,并推荐其在未来脑连接组学研究中的应用。