Results 81 to 90 of about 117,241 (194)

Double Temporal Sparsity Based Accelerated Reconstruction in Compressed Sensing fMRI

, 2017
A number of reconstruction methods have been proposed recently for accelerated functional Magnetic Resonance Imaging (fMRI) data collection. However, existing methods suffer with the challenge of greater artifacts at high acceleration factors. This paper
Aggarwal, Priya, Gupta, Anubha
core   +1 more source

Disambiguating the role of blood flow and global signal with partial information decomposition [PDF]

, 2019
Global signal (GS) is an ubiquitous construct in resting state functional magnetic resonance imaging (rs-fMRI), associated to nuisance, but containing by definition most of the neuronal signal.
Calhoun, Vince D., Colenbier, Nigel, Marinazzo, Daniele, Poldrack, Russell A., Uddin, Lucina Q., Van de Steen, Frederik   +5 more
core   +2 more sources

Estimating Time-Varying Effective Connectivity in High-Dimensional fMRI Data Using Regime-Switching Factor Models

, 2017
Recent studies on analyzing dynamic brain connectivity rely on sliding-window analysis or time-varying coefficient models which are unable to capture both smooth and abrupt changes simultaneously. Emerging evidence suggests state-related changes in brain
Ombao, Hernando, Salleh, Sh-Hussain, Samdin, S. Balqis, Ting, Chee-Ming   +3 more
core   +1 more source

Modafinil-Induced changes in functional connectivity in the cortex and cerebellum of healthy elderly subjects [PDF]

, 2017
In the past few years, cognitive enhancing drugs (CEDs) have gained growing interest and the focus of investigations aimed at exploring their use to potentiate the cognitive performances of healthy individuals.
Caltagirone, C, Gili, T, Petrosini, L, Punzi, M, Sensi, Sl., Spalletta, G   +5 more
core   +3 more sources

On consciousness, resting state fMRI, and neurodynamics [PDF]

Nonlinear Biomedical Physics, 2010
During the last years, functional magnetic resonance imaging (fMRI) of the brain has been introduced as a new tool to measure consciousness, both in a clinical setting and in a basic neurocognitive research. Moreover, advanced mathematical methods and theories have arrived the field of fMRI (e.g.
openaire   +2 more sources

Thalamo-cortical network activity between migraine attacks. Insights from MRI-based microstructural and functional resting-state network correlation analysis [PDF]

, 2016
BACKGROUND: Resting state magnetic resonance imaging allows studying functionally interconnected brain networks. Here we were aimed to verify functional connectivity between brain networks at rest and its relationship with thalamic microstructure in ...
Colonnese, Claudio, Coppola, Gianluca, DI LORENZO, Cherubino, Di Lorenzo, Giorgio, DI RENZO, Antonio, Lepre, Chiara, Parisi, Vincenzo, Pierelli, Francesco, Scapeccia, Marco, Schoenen, Jean, Serrao, Mariano, Tinelli, Emanuele   +11 more
core   +1 more source

Correspondence Between Resting-State and Episodic Memory-Task Related Networks in Elderly Subjects

Frontiers in Aging Neuroscience, 2018
Resting-state fMRI studies demonstrated temporally synchronous fluctuations in brain activity among ensembles of brain regions, suggesting the existence of intrinsic functional networks.
Lee Simon-Vermot, Alexander N. W. Taylor, Miguel À. Araque Caballero, Nicolai Franzmeier, Katharina Buerger, Katharina Buerger, Cihan Catak, Daniel Janowitz, Lana M. Kambeitz-Ilankovic, Birgit Ertl-Wagner, Marco Duering, Michael Ewers   +11 more
doaj   +1 more source

Topographic Electrophysiological Signatures of fMRI Resting State Networks

PLoS ONE, 2010
fMRI Resting State Networks (RSNs) have gained importance in the present fMRI literature. Although their functional role is unquestioned and their physiological origin is nowadays widely accepted, little is known about their relationship to neuronal activity. The combined recording of EEG and fMRI allows the temporal correlation between fluctuations of
Jann, Kay, Kottlow, Mara, Dierks, Thomas, Boesch, Chris, Koenig, Thomas   +4 more
openaire   +5 more sources

Detecting language network alterations in mild cognitive impairment using task‐based fMRI and resting‐state fMRI: A comparative study

Brain and Behavior
Objective The objective of this study was to investigate the functional changes associated with mild cognitive impairment (MCI) using independent component analysis (ICA) with the word generation task functional magnetic resonance imaging (fMRI) and ...
Kerem Kemik, Emel Ada, Berrin Çavuşoğlu, Cansu Aykaç, Derya Durusu Emek Savaş, Görsev Yener   +5 more
doaj   +1 more source

Ten Key Insights into the Use of Spinal Cord fMRI

Brain Sciences, 2018
A comprehensive review of the literature-to-date on functional magnetic resonance imaging (fMRI) of the spinal cord is presented. Spinal fMRI has been shown, over more than two decades of work, to be a reliable tool for detecting neural activity.
Jocelyn M. Powers, Gabriela Ioachim, Patrick W. Stroman   +2 more
doaj   +1 more source