Results 31 to 40 of about 80,806 (260)

Structural Covariance of the Ipsilesional Primary Motor Cortex in Subcortical Stroke Patients with Motor Deficits

Neural Plasticity, 2022
The analysis of structural covariance has emerged as a powerful tool to explore the morphometric correlations among broadly distributed brain regions. However, little is known about the interactions between the damaged primary motor cortex (M1) and other
Xinyuan Chen, Mengcheng Li, Naping Chen, Huimin Lai, Ziqiang Huang, Yuqing Tu, Qunlin Chen, Jianping Hu   +7 more
doaj   +1 more source

Common and Specific Characteristics of Adolescent Bipolar Disorder Types I and II: A Combined Cortical Thickness and Structural Covariance Analysis

Frontiers in Psychiatry, 2022
BackgroundBy calculating cortical thickness (CT) and cortical structural covariance (SC), we aimed to investigate cortical morphology and cortical inter-regional correlation alterations in adolescent bipolar disorder type I (BD-I) and type II (BD-II ...
Liangfeng Kuang, Weijia Gao, Zhiliang Long, Weifang Cao, Dong Cui, Yongxin Guo, Qing Jiao, Jianfeng Qiu, Linyan Su, Guangming Lu   +9 more
doaj   +1 more source

Statistical approaches for the study of cognitive and brain aging

Frontiers in Aging Neuroscience, 2016
Neuroimaging studies of cognitive and brain aging often yield massive datasets that create many analytic and statistical challenges. In this paper, we discuss and address several limitations in the existing work.
Huaihou Chen, Huaihou Chen, Bingxin Zhao, Guanqun Cao, Eric C Porges, Andrew O'Shea, Adam J Woods, Ronald Cohen   +7 more
doaj   +1 more source

Degeneracy and disordered brain networks in psychiatric patients using multivariate structural covariance analyzes

Frontiers in Psychiatry, 2023
IntroductionIn this study, we applied multivariate methods to identify brain regions that have a critical role in shaping the connectivity patterns of networks associated with major psychiatric diagnoses, including schizophrenia (SCH), major depressive ...
Rositsa Paunova, Rositsa Paunova, Cristina Ramponi, Sevdalina Kandilarova, Sevdalina Kandilarova, Anna Todeva-Radneva, Anna Todeva-Radneva, Adeliya Latypova, Drozdstoy Stoyanov, Drozdstoy Stoyanov, Ferath Kherif   +10 more
doaj   +1 more source

Multi-modal imaging of neural correlates of motor speed performance in the Trail Making Test

Frontiers in Neurology, 2015
The assessment of motor and executive functions following stroke or traumatic brain injury is a key aspect of impairment evaluation and used to guide further therapy.
Julia A. Camilleri, Julia A. Camilleri, Andrew T. Reid, Veronika I. Müller, Veronika I. Müller, Christian eGrefkes, Katrin eAmunts, Katrin eAmunts, Simon B. Eickhoff, Simon B. Eickhoff   +9 more
doaj   +1 more source

Structural covariance in the hard sphere fluid [PDF]

The Journal of Chemical Physics, 2018
We study the joint variability of structural information in a hard sphere fluid biased to avoid crystallisation and form five-fold symmetric geometric motifs. We show that the structural covariance matrix approach, originally proposed for on-lattice liquids [P. Ronceray and P. Harrowell, J. Stat. Mech.: Theory Exp. 2016(8), 084002], can be meaningfully
Benjamin M. G. D. Carter, Francesco Turci, Pierre Ronceray, C. Patrick Royall   +3 more
openaire   +5 more sources

Association Between Hippocampus, Thalamus, and Caudate in Mild Cognitive Impairment APOEε4 Carriers: A Structural Covariance MRI Study

Frontiers in Neurology, 2019
Objective: Although, the apolipoprotein E (APOE) genotype is widely recognized as one of the most important risk factors for Alzheimer's disease (AD) development, the neural mechanisms by which the ε4 allele promotes the AD occurring remain under debate.
Fabiana Novellino, María Eugenia López, María Eugenia López, María Eugenia López, Maria Grazia Vaccaro, Yus Miguel, María Luisa Delgado, Fernando Maestu, Fernando Maestu, Fernando Maestu   +9 more
doaj   +1 more source

Hippocampal morphological atrophy and distinct patterns of structural covariance network in Alzheimer’s disease and mild cognitive impairment

Frontiers in Psychology, 2022
Elucidating distinct morphological atrophy patterns of Alzheimer’s disease (AD) and its prodromal stage, namely, mild cognitive impairment (MCI) helps to improve early diagnosis and medical intervention of AD. On that account, we aimed to obtain distinct
Dawei Miao, Xiaoguang Zhou, Xiaoyuan Wu, Chengdong Chen, Le Tian   +4 more
doaj   +1 more source

On the structure of covariant phase observables [PDF]

Journal of Mathematical Physics, 2002
We study the mathematical structure of covariant phase observables. Such observables can alternatively be expressed as phase matrices, as sequences of unit vectors, as sequences of phase states, or as equivalence classes of covariant trace-preserving operations.
openaire   +3 more sources

Network-level structural alterations distinguish persistent from remitted post-traumatic stress disorder: a morphometric covariance approach

European Journal of Psychotraumatology
Background: Post-traumatic stress disorder (PTSD) exhibits heterogeneous clinical trajectories: while many affected individuals achieve remission, a substantial proportion develop a chronic, persistent form.
Suji Lee, Hyeonji Lee, Yoonji Joo, Chaewon Suh, Youngeun Shim, Yunjung Jin, Harin Song, Sujung Yoon, In Kyoon Lyoo   +8 more
doaj   +1 more source