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- Sophie Achard, Raymond Salvador, Brandon Whitcher, John Suckling, Ed. Bullmore
- The Journal of neuroscience : the officialâ€¦
- 2006

Small-world properties have been demonstrated for many complex networks. Here, we applied the discrete wavelet transform to functional magnetic resonance imaging (fMRI) time series, acquired fromâ€¦ (More)

- Sophie Achard, Edward T. Bullmore
- PLoS Computational Biology
- 2007

Brain anatomical networks are sparse, complex, and have economical small-world properties. We investigated the efficiency and cost of human brain functional networks measured using functionalâ€¦ (More)

- David Meunier, Sophie Achard, Alexa M. Morcom, Edward T. Bullmore
- NeuroImage
- 2009

Graph theory allows us to quantify any complex system, e.g., in social sciences, biology or technology, that can be abstractly described as a set of nodes and links. Here we derived human brainâ€¦ (More)

- Danielle S. Bassett, Andreas Meyer-Lindenberg, Sophie Achard, Thomas Duke, Edward T. Bullmore
- Proceedings of the National Academy of Sciencesâ€¦
- 2006

Brain function depends on adaptive self-organization of large-scale neural assemblies, but little is known about quantitative network parameters governing these processes in humans. Here, we describeâ€¦ (More)

- Lara Menzies, Sophie Achard, +6 authors Ed. Bullmore
- Brain : a journal of neurology
- 2007

Endophenotypes (intermediate phenotypes) are objective, heritable, quantitative traits hypothesized to represent genetic risk for polygenic disorders at more biologically tractable levels than distalâ€¦ (More)

- Sophie Achard, Chantal Delon-Martin, +6 authors Edward T. Bullmore
- Proceedings of the National Academy of Sciencesâ€¦
- 2012

Human brain networks have topological properties in common with many other complex systems, prompting the following question: what aspects of brain network organization are critical for distinctiveâ€¦ (More)

- Fabrizio De Vico Fallani, Jonas Richiardi, Mario Chavez, Sophie Achard
- Philosophical transactions of the Royal Societyâ€¦
- 2014

The brain can be regarded as a network: a connected system where nodes, or units, represent different specialized regions and links, or connections, represent communication pathways. From aâ€¦ (More)

This work focuses on a quadratic dependence measure which can be used for blind source separation. After defining it, we show some links with other quadratic dependence measures used by Feuervergerâ€¦ (More)

- Charles Persoz, Sophie Achard, Christopher Leleu, Isabelle Momas, Nathalie Seta
- Toxicology letters
- 2010

Asthma is a public health problem worldwide, and indoor air pollution considered to be a potential etiology. New tools need to be developed to study the effects of air pollutants in vitro andâ€¦ (More)

- Sophie Achard, Danielle S. Bassett, Andreas Meyer-Lindenberg, Ed. Bullmore
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2008

Using the multivariate long memory (LM) model and Taylor expansions, we find the conditions for convergence of the wavelet correlations between two LM processes on an asymptotic value at lowâ€¦ (More)