Accurate Definition of Brain Regions Position through the Functional Landmark Approach
(0) In many application of functional Magnetic Resonance Imaging (fMRI), including clinical or pharmacological studies, the definition of the location of the functional activity between subjects is crucial. While current acquisition and normalization procedures improve the accuracy of the functional signal localization, it is also important to ensure that functional foci detection yields accurate results, and reflects betweensubject variability. Here we introduce a fast functional landmark detection procedure, that explicitly models the spatial variability of activation foci in the observed population. We compare this detection approach to standard statistical maps peak extraction procedures: we show that it yields more accurate results on simulations, and more reproducible results on a large cohort of subjects. These results demonstrate that explicit functional landmark modeling approaches are more effective than standard statistical mapping for brain functional focus detection.
Bertrand Thirion Gael Varoquaux Jean-Baptiste Poline
Parietal team, INRIA Saclay-Ile-de-France, Saclay, France CEA, DSV, I2BM, Neurospin, Saclay, France
国际会议
北京
英文
241-248
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）