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Patric Hagmann

Cette personne n’est plus à l’EPFL

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Publications associées (94)

High b-value diffusion-weighted imaging: a sensitive method to reveal white matter differences in schizophrenia

Pierre Marquet, Jean-Philippe Thiran, Djalel Eddine Meskaldji, Patric Hagmann, Reto Meuli, Philipp Baumann, Leila Cammoun

Over the last ten years, Diffusion-weighted Imaging (DWI) has become an important tool to investigate white matter (WM) anomalies in schizophrenia. Despite technological improvement and the exponential use of this technique, discrepancies remain and little ...

Elsevier2012

Adaptive Strategy for the Statistical Analysis of Connectomes

Stephan Morgenthaler, Jean-Philippe Thiran, Djalel Eddine Meskaldji, Patric Hagmann, Reto Meuli, Leila Cammoun

We study an adaptive statistical approach to analyze brain networks represented by brain connection matrices of interregional connectivity (connectomes). Our approach is at a middle level between a global analysis and single connections analysis by conside ...

Public Library of Science2011

The Connectome Viewer Toolkit: an open source framework to manage, analyze, and visualize connectomes

Jean-Philippe Thiran, Patric Hagmann, Reto Meuli, Alia Lemkaddem, Alessandro Daducci

Advanced neuroinformatics tools are required for methods of connectome mapping, analysis, and visualization. The inherent multi-modality of connectome datasets poses new challenges for data organization, integration, and sharing. We have designed and imple ...

Frontiers Research Foundation2011

On the reproducibility and anatomical correspondence of DSI tractography

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Gunnar Krüger, Cristina Granziera, Alessandro Daducci, Leila Cammoun

Diffusion spectrum imaging (DSI) is increasingly explored in clinical research. The quantitative value of the DSI technique, however, has still to be established. In this context, a better understanding of the reproducibility and the anatomical corresponde ...

2010

White matter maturation reshapes structural connectivity in the late developing human brain

Jean-Philippe Thiran, Patric Hagmann, Reto Meuli, Van Jay Wedeen, Leila Cammoun, Olaf Sporns

From toddler to late teenager, the macroscopic pattern of axonal projections in the human brain remains largely unchanged while undergoing dramatic functional modifications that lead to network refinement. These functional modifications are mediated by inc ...

National Academy of Sciences2010

GLOBAL AND LOCAL CONNECTIVITY CHANGES IN SCHIZOPHRENIA INVESTIGATED BY DIFFUSION CONNECTOME

Jean-Philippe Thiran, Djalel Eddine Meskaldji, Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun

Elsevier2010

The effects of physiologically plausible connectivity structure on local and global dynamics in large scale brain models

Pascal Hagmann, Patric Hagmann, Olaf Sporns

Functionally relevant large scale brain dynamics operates within the framework imposed by anatomical connectivity and time delays due to finite transmission speeds. To gain insight on the reliability and comparability of large scale brain network simulatio ...

Elsevier2009

Mapping the human connectome at multiple scales with diffusion spectrum MRI

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun, Olaf Sporns

2009

Connectome alterations in schizophrenia

Pascal Hagmann, Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun, Olaf Sporns, Kim Do

2009

Modeling the Impact of Lesions in the Human Brain

Patric Hagmann, Leila Cammoun, Olaf Sporns

2009

Predicting Resting-State Functional Connectivity from Structural Connectivity

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun, Olaf Sporns

2009

Predicting Human Resting-State Functional Connectivity from structural Connectivity

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun, Olaf Sporns

In the cerebral cortex, the activity levels of neuronal populations are continuously fluctuating. When neuronal activity, as measured using functional MRI (fMRI), is temporally coherent across 2 populations, those populations are said to be functionally co ...

2009

Diffusion MR Image Segmentation: Towards Global Brain Connectivity Analysis

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun

The exploration of the human connectome, a term denoting the global structural connectivity of the brain, is accessible to MRI at millimeter and centimeter scales. In this paper, we propose a methodology to map the connectome by constructing normalized who ...

Societa Editrice Esculapio-Progetto Leonardo, Via Umberto Terracini 30, Bologna, 40131, Italy2009

Diffusion spectrum magnetic resonance imaging (DSI) tractography of crossing fibers

Pascal Hagmann, Patric Hagmann, Van Jay Wedeen

MRI tractography is the mapping of neural fiber pathways based on diffusion MRI of tissue diffusion anisotropy. Tractography based on diffusion tensor imaging (DTI) cannot directly image multiple fiber orientations within a single voxel. To address this li ...

Elsevier2008

Mapping the Structural Core of Human Cerebral Cortex

Pascal Hagmann, Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun, Olaf Sporns

Structurally segregated and functionally specialized regions of the human cerebral cortex are interconnected by a dense network of cortico-cortical axonal pathways. Using diffusion spectrum imaging we noninvasively map these pathways within and across cort ...

2008

Thalamic nuclei clustering on High Angular Resolution Diffusion Images

Pascal Hagmann, Jean-Philippe Thiran, Patric Hagmann, Reto Meuli, Azzurra Grassi, Leila Cammoun

Thalamic nuclei can be distinguished by their characteristic fiber orientations, which influence the diffusion. Fiber orientations are relatively aligned within a nucleus due to the fact that the cerebrocortical striations within a nucleus all target the s ...

2008

Predicting Resting-State Functional Connectivity from Structural Connectivity

Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun, Olaf Sporns

2008

Estimating the Confidence Level of White Matter Connections Obtained with MRI Tractography

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Maciej Kurant, Leila Cammoun

Background Since the emergence of diffusion tensor imaging, a lot of work has been done to better understand the properties of diffusion MRI tractography. However, the validation of the reconstructed fiber connections remains problematic in many respects. ...

2008

Mapping the Structural Core of Human Cerebral Cortex

Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun, Olaf Sporns

2008

Quantitative Validation of MR Tractography Using the CoCoMac Database

Xavier Gigandet, Patric Hagmann, Reto Meuli, Van Jay Wedeen, Olaf Sporns

2008

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