Journal ArticleDOI
Conn: A Functional Connectivity Toolbox for Correlated and Anticorrelated Brain Networks
TLDR
The results indicate that the CompCor method increases the sensitivity and selectivity of fcMRI analysis, and show a high degree of interscan reliability for many fc MRI measures.Citations
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Analyzing Dynamical Brain Functional Connectivity As Trajectories on Space of Covariance Matrices
TL;DR: This paper aims to statistically analyze the dynamic nature of FC by representing the collective time-series data, over a set of brain regions, as a trajectory on the space of covariance matrices, or symmetric-positive definite matrices (SPDMs).
Journal ArticleDOI
Functional connectome reorganization relates to post-stroke motor recovery and structural and functional disconnection
Emily Olafson,Keith Jamison,Elizabeth M. Sweeney,Hesheng Liu,Danhong Wang,Joel Bruss,Aaron D. Boes,Amy Kuceyeski +7 more
TL;DR: In this paper, a graph matching approach was used to identify patterns of functional connectivity reorganization during motor recovery following stroke, and it was shown that the areas that undergo functional reorganization most frequently are in cerebellar/subcortical networks.
Journal ArticleDOI
Structural and Functional Connectivity Changes Beyond Visual Cortex in a Later Phase of Visual Perceptual Learning.
Dong-Wha Kang,Dongho Kim,Dongho Kim,Li Hung Chang,Yong-Hwan Kim,Emi Takahashi,Matthew S. Cain,Matthew S. Cain,Takeo Watanabe,Yuka Sasaki +9 more
TL;DR: A two-phase model of VPL is suggested in which localized functional changes in V1 in the encoding phase of training are followed by changes in both structural and functional connectivity in ventral visual processing, perhaps leading to the long-term stabilization of V PL.
Journal ArticleDOI
GraphVar 2.0: a user-friendly toolbox for machine learning on functional connectivity measures
Lea Waller,Anastasia Brovkin,Lena Dorfschmidt,Danilo Bzdok,Henrik Walter,Johann Daniel Kruschwitz,Johann Daniel Kruschwitz +6 more
TL;DR: GraphVar 2.0 allows comprehensive, user-friendly exploration of encoding (GLM) and decoding (ML) modelling approaches on functional connectivity measures making big data neuroscience readily accessible to a broader audience of neuroimaging investigators.
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A computational study of whole-brain connectivity in resting state and task fMRI.
TL;DR: Results suggest that the network paths may be rerouted when performing the task condition, and that task performance induces stronger inter-regional connections, leading to a denser processing network, but that this does not imply a more efficient system.
References
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Journal ArticleDOI
Collective dynamics of small-world networks
TL;DR: Simple models of networks that can be tuned through this middle ground: regular networks ‘rewired’ to introduce increasing amounts of disorder are explored, finding that these systems can be highly clustered, like regular lattices, yet have small characteristic path lengths, like random graphs.
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A default mode of brain function.
Marcus E. Raichle,Ann Mary MacLeod,Abraham Z. Snyder,William J. Powers,Debra A. Gusnard,Gordon L. Shulman +5 more
TL;DR: A baseline state of the normal adult human brain in terms of the brain oxygen extraction fraction or OEF is identified, suggesting the existence of an organized, baseline default mode of brain function that is suspended during specific goal-directed behaviors.
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Complex brain networks: graph theoretical analysis of structural and functional systems
Edward T. Bullmore,Olaf Sporns +1 more
TL;DR: This article reviews studies investigating complex brain networks in diverse experimental modalities and provides an accessible introduction to the basic principles of graph theory and highlights the technical challenges and key questions to be addressed by future developments in this rapidly moving field.
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Functional connectivity in the motor cortex of resting human brain using echo-planar MRI.
TL;DR: It is concluded that correlation of low frequency fluctuations, which may arise from fluctuations in blood oxygenation or flow, is a manifestation of functional connectivity of the brain.
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The Brain's Default Network Anatomy, Function, and Relevance to Disease
TL;DR: Past observations are synthesized to provide strong evidence that the default network is a specific, anatomically defined brain system preferentially active when individuals are not focused on the external environment, and for understanding mental disorders including autism, schizophrenia, and Alzheimer's disease.