Results 21 to 30 of about 63,144 (227)

Resting-State fMRI

open access: yesThe Neuroscientist, 2014
Although brain plasticity is greatest in the first few years of life, the brain continues to be shaped by experience throughout adulthood. Advances in fMRI have enabled us to examine the plasticity of large-scale networks using blood oxygen level-dependent (BOLD) correlations measured at rest.
Guerra-Carrillo, Belén   +2 more
openaire   +5 more sources

Resting-state fMRI confounds and cleanup [PDF]

open access: yesNeuroImage, 2013
The goal of resting-state functional magnetic resonance imaging (fMRI) is to investigate the brain's functional connections by using the temporal similarity between blood oxygenation level dependent (BOLD) signals in different regions of the brain "at rest" as an indicator of synchronous neural activity.
Kevin, Murphy   +2 more
openaire   +2 more sources

Caffeine-Induced Global Reductions in Resting-State BOLD Connectivity Reflect Widespread Decreases in MEG Connectivity. [PDF]

open access: yes, 2013
In resting-state functional magnetic resonance imaging (fMRI), the temporal correlation between spontaneous fluctuations of the blood oxygenation level dependent (BOLD) signal from different brain regions is used to assess functional connectivity ...
Diwakar, Mithun   +6 more
core   +1 more source

Large-scale DCMs for resting-state fMRI [PDF]

open access: yesNetwork Neuroscience, 2017
This paper considers the identification of large directed graphs for resting-state brain networks based on biophysical models of distributed neuronal activity, that is, effective connectivity. This identification can be contrasted with functional connectivity methods based on symmetric correlations that are ubiquitous in resting-state functional MRI ...
Adeel Razi   +8 more
openaire   +5 more sources

Compressed Online Dictionary Learning for Fast fMRI Decomposition [PDF]

open access: yes, 2016
We present a method for fast resting-state fMRI spatial decomposi-tions of very large datasets, based on the reduction of the temporal dimension before applying dictionary learning on concatenated individual records from groups of subjects. Introducing a
Mensch, Arthur   +2 more
core   +5 more sources

Resting State fMRI-Guided Fiber Clustering [PDF]

open access: yes, 2011
Fiber clustering is a prerequisite step towards tract-based analysis of white mater integrity via diffusion tensor imaging (DTI) in various clinical neuroscience applications. Many methods reported in the literature used geometric or anatomic information for fiber clustering.
Bao, Ge   +6 more
openaire   +2 more sources

Lag structure in resting-state fMRI

open access: yesJournal of Neurophysiology, 2014
The discovery that spontaneous fluctuations in blood oxygen level-dependent (BOLD) signals contain information about the functional organization of the brain has caused a paradigm shift in neuroimaging. It is now well established that intrinsic brain activity is organized into spatially segregated resting-state networks (RSNs). Less is known regarding
A, Mitra   +3 more
openaire   +3 more sources

Hemodynamic and electrophysiological evidence of resting-state network activity in the primate [PDF]

open access: yes, 2008
An expanding body of literature describes the existence of concerted brain activations in the absence of any external stimuli. Resting-state networks have been identified and demonstrated to be modulated during the performance of specific cognitive ...
Allen Ardestani   +4 more
core   +2 more sources

Temporal dynamics in fMRI resting-state activity [PDF]

open access: yesProceedings of the National Academy of Sciences, 2015
In a significant new study, Mitra et al. (1) demonstrate the existence of reproducible temporal patterns of spontaneous activity from human functional magnetic resonance imaging (fMRI) recordings. This finding and the novel methods used to demonstrate it bring the question of the role of temporally patterned activity into the domain of human cognition.
Rafael, Yuste, Adrienne L, Fairhall
openaire   +2 more sources

A Resting-State fMRI Study [PDF]

open access: yes, 2017
Mirror visual feedback (MVF) is a promising approach to enhance motor performance without training in healthy adults as well as in patients with focal brain lesions.
Hoff, Maike   +7 more
core   +1 more source

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