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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Dynamic task-linked switching between brain networks - A tri-network perspective.
TL;DR: In this paper, the authors investigated the temporal dynamics of network activity during task switching and found that the salience network co-activates with the task-relevant network, providing a mechanistic insight into SN-mediated network selection in the context of explicit tasks.
Journal ArticleDOI
MDMA-induced changes in within-network connectivity contradict the specificity of these alterations for the effects of serotonergic hallucinogens.
Felix Müller,Friederike Holze,Patrick C. Dolder,Laura Ley,Patrick Vizeli,Alain Soltermann,Matthias E. Liechti,Stefan Borgwardt,Stefan Borgwardt +8 more
TL;DR: The results suggest that monoaminergic substances can induce widespread changes in within-network connectivity in the absence of marked subjective drug effects, which contradicts the notion that these alterations can be regarded as specific for serotonergic hallucinogens.
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A study of neural activity and functional connectivity within the olfactory brain network in Parkinson's disease.
Charalampos Georgiopoulos,Suzanne T. Witt,Sven Haller,Nil Dizdar,Helene Zachrisson,Maria Engström,Elna-Marie Larsson +6 more
TL;DR: Olfactory dysfunction in PD is associated with less significant recruitment of the olfactory brain network, and this network was less significant for PD patients than healthy controls.
Journal ArticleDOI
Task-Dependent Changes in Frontal-Parietal Activation and Connectivity During Visual Search.
TL;DR: It is found that goal-directed visual search engages a network of frontal-parietal areas that are modulated in relation to cognitive demand, suggesting that cognitive demand significantly increases brain resources across all three measures of brain processing.
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Resting-state functional connectivity as a biomarker of aggression in mild traumatic brain injury.
TL;DR: Resting state functional MRI is utilized to explore the association between default mode network connectivity and aggression in adults with mTBI and healthy controls, providing evidence for the use of resting state functional connectivity as a potential biomarker of postconcussive aggression in chronicmTBI.
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.