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Automatic Artifact Removal of Resting-State fMRI with Deep Neural Networks KU Leuven
Functional Magnetic Resonance Imaging (fMRI) is a noninvasive technique for studying brain activity. During an fMRI session, the subject executes a set of tasks (task-related fMRI study) or no tasks (resting-state fMRI), and a sequence of 3-D brain images is obtained for further analysis. In the course of fMRI, some sources of activation are caused by noise and artifacts. The removal of these sources is essential before the analysis of the brain ...
Can we use resting-state fMRI and CSD fiber tractography in presurgical mapping? KU Leuven
The brain is the most complex organ in the human body. It is a fascinating biological machine capable of processing massive amounts of information and performing a wide array of functions. In fact, it is so complex that we estimate that the number of connections between nerve cells (neurons) in the human brain to be about 100 times the number of stars in our neighboring Andromeda galaxy (1 trillion). However, like any other organ in our body, ...
Visibility graphs for fMRI data : multiplex temporal graphs and their modulations across resting-state networks Universiteit Gent
Visibility algorithms are a family of methods that map time series into graphs, such that the tools of graph theory and network science can be used for the characterization of time series. This approach has proved a convenient tool, and visibility graphs have found applications across several disciplines. Recently, an approach has been proposed to extend this framework to multivariate time series, allowing a novel way to describe collective ...
Predicting functional networks from region connectivity profiles in task-based versus resting-state fMRI data Universiteit Gent
Hemodynamic response function (HRF) variability confounds resting-state fMRI functional connectivity Universiteit Gent
Functional specialization of macaque premotor F5 subfields with respect to hand and mouth movements: A comparison of task and resting-state fMRI KU Leuven
Based on architectonic, tract-tracing or functional criteria, the rostral portion of ventral premotor cortex in the macaque monkey, also termed area F5, has been divided into several subfields. Cytoarchitectonical investigations suggest the existence of three subfields, F5c (convexity), F5p (posterior) and F5a (anterior). Electrophysiological investigations have suggested a gradual dorso-ventral transition from hand- to mouth-dominated motor ...
Resting-state fMRI revealed different brain activities responding to valproic acid and levetiracetam in benign epilepsy with central-temporal spikes KU Leuven
OBJECTIVES: Our aim was to investigate regional difference in brain activities in response to antiepileptic drug (AED) medications in benign epilepsy with central-temporal spikes (BECTS) using resting-state functional magnetic resonance imaging (fMRI). METHODS: Fifty-seven patients with BECTS underwent resting-state fMRI scans after receiving either valproic acid (VPA) (n = 15), levetiracetam (LEV) (n = 21), or no medication (n = 21). fMRI ...
Can sliding-window correlations reveal dynamic functional connectivity in resting-state fMRI? KU Leuven Universiteit Antwerpen
During the last several years, the focus of research on resting-state functional magnetic resonance imaging (fMRI) has shifted from the analysis of functional connectivity averaged over the duration of scanning sessions to the analysis of changes of functional connectivity within sessions. Although several studies have reported the presence of dynamic functional connectivity (dFC), statistical assessment of the results is not always carried out ...
Resting-state fMRI and social cognition: An opportunity to connect KU Leuven
Many psychiatric disorders are characterized by altered social cognition. The importance of social cognition has previously been recognized by the National Institute of Mental Health Research Domain Criteria project, in which it features as a core domain. Social task-based functional magnetic resonance imaging (fMRI) currently offers the most direct insight into how the brain processes social information; however, resting-state fMRI may be just ...