Publications de Nora Leonardi | EPFL Graph Search

On spurious and real fluctuations of dynamic functional connectivity during rest

Dimitri Nestor Alice Van De Ville, Nora Leonardi

Functional brain networks reconfigure spontaneously during rest. Such network dynamics can be studied by dynamic functional connectivity (dynFC); i.e., sliding-window correlations between regional brain activity. Key parameters-such as window length and cu ...

Elsevier2015

Anatomically-adapted graph wavelets for improved group-level fMRI activation mapping

Dimitri Nestor Alice Van De Ville, Nora Leonardi, Hamid Behjat

A graph based framework for fMRI brain activation mapping is presented. The approach exploits the spectral graphwavelet transform (SGWT) for the purpose of defining an advanced multi-resolutional spatial transformation for fMRI data. The framework extends ...

Elsevier2015

Erratum to "On spurious and real fluctuations of dynamic functional connectivity during rest"

Dimitri Nestor Alice Van De Ville, Nora Leonardi

Elsevier2015

Disentangling Dynamic Networks: Separated and Joint Expressions of Functional Connectivity Patterns in Time

Dimitri Nestor Alice Van De Ville, Nora Leonardi

Resting-state functional connectivity (FC) is highly variable across the duration of a scan. Groups of coevolving connections, or reproducible patterns of dynamic FC (dFC), have been revealed in fluctuating FC by applying unsupervised learning techniques. ...

Wiley-Blackwell2014

Dynamic brain networks explored by structure-revealing methods

Nora Leonardi

The human brain is a complex system able to continuously adapt. How and where brain activity is modulated by behavior can be studied with functional magnetic resonance imaging (fMRI), a non-invasive neuroimaging technique with excellent spatial resolution ...

EPFL2014

Principal components of functional connectivity: A new approach to study dynamic brain connectivity during rest

Jonas Richiardi, Dimitri Nestor Alice Van De Ville, Nora Leonardi

Functional connectivity (FC) as measured by correlation between NM BOLD time courses of distinct brain regions has revealed meaningful organization of spontaneous fluctuations in the resting brain. However, an increasing amount of evidence points to non-st ...

Elsevier2013

Functional Connectivity Eigennetworks Reveal Different Brain Dynamics In Multiple Sclerosis Patients

Jonas Richiardi, Dimitri Nestor Alice Van De Ville, Nora Leonardi

Resting state functional connectivity is defined as correlations in brain activity measured by functional magnetic resonance imaging without any stimulation paradigm. Such connectivity is dynamic, even over the course of minutes, and the development of too ...

Ieee2013

Substrate Elasticity Regulates Skeletal Muscle Stem Cell Self-Renewal in Culture

Matthias Lütolf, Nora Leonardi

Freshly isolated muscle stem cells (MuSCs) exhibit robust regenerative capacity in vivo that is rapidly lost in culture. Using a bioengineered substrate to recapitulate key biophysical and biochemical niche features in conjunction with a novel highly autom ...

American Association for the Advancement of Science2010