On spatial selectivity and prediction across conditions with fMRI

Abstract : Researchers in functional neuroimaging mostly use activation coordinates to formulate their hypotheses. Instead, we propose to use the full statistical images to define regions of interest (ROIs). This paper presents two machine learning approaches, transfer learning and selection transfer, that are compared upon their ability to identify the common patterns between brain activation maps related to two functional tasks. We provide some preliminary quantification of these similarities, and show that selection transfer makes it possible to set a spatial scale yielding ROIs that are more specific to the context of interest than with transfer learning. In particular, selection transfer outlines well known regions such as the Visual Word Form Area when discriminating between different visual tasks.
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Communication dans un congrès
PRNI 2012 : 2nd International Workshop on Pattern Recognition in NeuroImaging, Jul 2012, London, United Kingdom. pp.53-56, 2012
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Contributeur : Yannick Schwartz <>
Soumis le : jeudi 6 septembre 2012 - 15:42:33
Dernière modification le : jeudi 7 février 2019 - 15:01:16
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  • HAL Id : hal-00728765, version 1
  • ARXIV : 1209.1450

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Yannick Schwartz, Gaël Varoquaux, Bertrand Thirion. On spatial selectivity and prediction across conditions with fMRI. PRNI 2012 : 2nd International Workshop on Pattern Recognition in NeuroImaging, Jul 2012, London, United Kingdom. pp.53-56, 2012. 〈hal-00728765〉

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