Results 21 to 30 of about 116,293 (248)

An information-theoretic analysis of resting-state versus task fMRI

Network Neuroscience, 2023
Resting-state fMRI is an increasingly popular alternative to task-based fMRI. However, a formal quantification of the amount of information provided by resting-state fMRI as opposed to active task conditions about neural responses is lacking.
Julia Tuominen, Karsten Specht, Liucija Vaisvilaite, Peter Zeidman   +3 more
doaj   +1 more source

Propagated infra-slow intrinsic brain activity reorganizes across wake and slow wave sleep [PDF]

, 2015
Propagation of slow intrinsic brain activity has been widely observed in electrophysiogical studies of slow wave sleep (SWS). However, in human resting state fMRI (rs-fMRI), intrinsic activity has been understood predominantly in terms of zero-lag ...
Abel, Achermann, Alkire, Allen, Beckmann, Biswal, Blethyn, Boly, Born, Boyle, Braun, Brown, Caminiti, Cirelli, Cirelli, Dang-Vu, Doyon, Euston, Everson, Ferezou, Florin, Fox, Franks, Franks, Gais, Graybiel, Hacker, Hacker, Hahn, Hahn, Halsband, Hayasaka, He, He, Hiltunen, Hirsch, Hobson, Horikawa, Horovitz, Horovitz, Hughes, Knowlton, König, Larson-Prior, Laureys, Lim, Loomis, Loomis, Maquet, Marshall, Mascetti, Mashour, Mashour, Massimini, Maxim, McClelland, McCormick, McCormick, McNaughton, Minka, Mitra, Mitra, Mohajerani, Mohajerani, Murphy, Nikolić, Nir, Nir, Pan, Petersen, Picchioni, Power, Rechtschaffen, Rechtschaffen, Riedner, Schneider, Seth, Sheroziya, Sirota, Soeffing, Soeffing, Steriade, Steriade, Stickgold, Stickgold, Sämann, Tagliazucchi, Tagliazucchi, Takashima, Tononi, Yuste   +90 more
core   +4 more sources

A DCM for resting state fMRI

NeuroImage, 2014
This technical note introduces a dynamic causal model (DCM) for resting state fMRI time series based upon observed functional connectivity--as measured by the cross spectra among different brain regions. This DCM is based upon a deterministic model that generates predicted crossed spectra from a biophysically plausible model of coupled neuronal ...
Friston, Karl J., Kahan, Joshua, Biswal, Bharat, Razi, Adeel   +3 more
openaire   +4 more sources

Arousal Contributions to Resting-State fMRI Connectivity and Dynamics

Frontiers in Neuroscience, 2019
Resting-state functional magnetic resonance imaging (rsfMRI) is being widely used for charting brain connectivity and dynamics in healthy and diseased brains. However, the resting state paradigm allows an unconstrained fluctuation of brain arousal, which
Yameng Gu, Feng Han, Xiao Liu, Xiao Liu
doaj   +1 more source

On nodes and modes in resting state fMRI

NeuroImage, 2014
ISSN:1095 ...
Friston, Karl J, Kahan, Joshua, Razi, Adeel, Stephan, Klaas Enno, Sporns, Olaf   +4 more
openaire   +6 more sources

Functional connectomics from resting-state fMRI [PDF]

Trends in Cognitive Sciences, 2013
Spontaneous fluctuations in activity in different parts of the brain can be used to study functional brain networks. We review the use of resting-state functional MRI (rfMRI) for the purpose of mapping the macroscopic functional connectome. After describing MRI acquisition and image-processing methods commonly used to generate data in a form amenable ...
Smith, S, Vidaurre, D, Beckmann, C, Beckmann, C, Beckmann, C, Glasser, M, Jenkinson, M, Miller, K, Nichols, T, Nichols, T, Robinson, E, Salimi-Khorshidi, G, Woolrich, M, Woolrich, M, Barch, D, Uǧurbil, K, Van Essen, D   +16 more
openaire   +5 more sources

Phenotyping Superagers Using Resting-State fMRI

American Journal of Neuroradiology, 2023
Superagers are defined as older adults with episodic memory performance similar or superior to that in middle-aged adults. This study aimed to investigate the key differences in discriminative networks and their main nodes between superagers and cognitively average elderly controls.
de Godoy, L.L., Studart-Neto, A., de Paula, D.R., Green, N., Halder, A., Arantes, P., Chaim, K.T., Moraes, N.C., Yassuda, M.S., Nitrini, R., Dresler, M., Dresler, M., da Costa Leite, C., Panovska-Griffiths, J., Soddu, A., Bisdas, S.   +15 more
openaire   +4 more sources

Compressed Online Dictionary Learning for Fast fMRI Decomposition [PDF]

, 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, Thirion, Bertrand, Varoquaux, Gaël   +2 more
core   +5 more sources

3T vs. 7T fMRI: capturing early human memory consolidation after motor task utilizing the observed higher functional specificity of 7T

Frontiers in Neuroscience, 2023
ObjectiveFunctional magnetic resonance imaging (fMRI) visualizes brain structures at increasingly higher resolution and better signal-to-noise ratio (SNR) as field strength increases.
Silke Kreitz, Angelika Mennecke, Laura Konerth, Julie Rösch, Armin M. Nagel, Frederik B. Laun, Michael Uder, Arnd Dörfler, Andreas Hess, Andreas Hess   +9 more
doaj   +1 more source

Resting-State fMRI [PDF]

The 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, Mackey, Allyson P, Bunge, Silvia A   +2 more
openaire   +5 more sources