Bertrand Thirion

..This protocol captures the cerebral bases of auditory and visual perception, motor actions, reading, language comprehension and mental calculation at an individual level...

..Furthermore, we extend this principle to mental imagery data: in five data sets, our algorithms could reconstruct and predict with significant accuracy a pattern imagined by the subjects...

..Finally, inter-subject correspondences are computed with Bayesian Network models. We show the power of the technique on both simulated and real datasets and compare it with standard inference techniques...

..Moreover, it directly provides information on the spatial position correspondence or variability of the activated regions across subjects, which is difficult to obtain in standard voxel-based analyses...

..These results demonstrate that explicit functional landmark modeling approaches are more effective than standard statistical mapping for brain functional focus detection...

..Moreover, our study shows that inter-subject variability plays a prominent role in the relatively low sensitivity and reliability of group studies...

..We explore a dataset acquired while subjects were involved in several cognitive and sensori-motor processes, and show that this representation allows to classify subjects into sub-groups on the basis of their BFL activity...

..We show that we can obtain groups (or cliques) of parcels that well summarize inter-subject activations. We also show that the spatial relaxation embedded in our procedure improves the sensitivity of random-effect analysis...

..Moreover, this article presents the first use of TV regularization for classification...

..We present results from the Functional Imaging Analysis Contest 2005 dataset to support this claim...

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..The resulting model includes the large bundles of anatomical literature and about 20 U-fiber bundles in each hemisphere...

..We show on simulated and real data that outliers can be detected satisfactorily, even in situations where the number of dimensions of the data exceeds the number of observations...

..The new tests are implemented in a freely available toolbox for SPM called Distance...

..In addition, on a specific transfer situation involving different scanners at different locations, we show that voxel selection based on transfer learning leads to higher detection power on small cohorts...

..Results show the superiority of the Log-domain Geometric Demons over their purely iconic counterparts...

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..We demonstrate on functional neuroimaging datasets that outlier detection can be performed with small sample sizes and improves group studies...

..We conclude that adding matter information consistently improves the quantitative analysis of BOLD responses in some areas of the brain, particularly those where accurate inter-subject registration remains challenging...

..On resting-state fMRI data, we extract the first atlas of spontaneous brain activity and show how it defines a subject-specific functional parcellation of the brain in localized regions...

..The excellent time resolution of MEG imaging further opens interesting perspectives on the temporal and spectral processes sustained by the human visual system...

..The paper ends with a discussion of a new theory of random shapes that may prove useful in building anatomical and functional atlases...

..Moreover, we demonstrated that incorporating a connectivity prior learned with our multimodal connectivity estimation approach improves activation detection...

..The IB quantization provides a consistent representation of the data, allowing for an easy interpretation and comparison of datasets...

..This phenomenon is clearly recovered as well as the hierarchical temporal organisation of the superior temporal sulcus, which is directly derived from the parcel-based HRF estimates...

..We illustrate the usefulness of nonlinearity through the analysis of a synthetic dataset and show on a real dataset how it helps to interpret the experimental results...