Loading Events

« All Events

  • This event has passed.

BrainMap: From fMRI Mega-analyses to Universal Representations of Cognition

September 2 @ 12:00 pm - 1:00 pm

Dr. Bertrand Thirion, INRIA/CEA/Neurospin France


To map the neural substrate of mental function, cognitive neuroimaging relies on controlled psychological manipulations that engage brain systems associated with specific cognitive processes. In order to build comprehensive atlases of cognitive function in the brain, it must assemble maps for many different cognitive processes, which often evoke overlapping patterns of activation. Such data aggregation faces contrasting goals: on the one hand finding correspondences across vastly different cognitive experiments, while on the other hand precisely describing the function of any given brain region. In this talk I will present two analysis frameworks that tackle these difficulties and thereby enable the generation of brain atlases for cognitive function.  The first one uses deep-learning techniques to extract representations—task-optimized networks—that form a set of basis cognitive dimensions relevant to the psychological manipulations.This approach does not assume any prior knowledge of the commonalities shared by the studies in the corpus; those are inferred during model training. The second one leverages ontologies of cognitive concepts and multi-label brain decoding to map the neural substrate of these concepts. Crucially, it can accurately decode the cognitive concepts recruited in new tasks. These results demonstrate that aggregating independent task-fMRI studies can provide a more precise global atlas of selective associations between brain and cognition.


Bertrand Thirion is the leader of the Parietal team, part of INRIA research institute, Saclay, France, that develops statistics and machine learning techniques for brain imaging. He contributes both algorithms and software, with a special focus on functional neuroimaging applications. He is involved in the Neurospin (CEA) neuroimaging center, one of the leading high-field MRI for brain imaging places. Bertrand Thirion is also head of the DATAIA  Institute that federates research on AI, data science and their societal impact in Paris-Saclay University. He has recently been appointed as member of the expert committee in charge of advising the government during the Covid-19 pandemic.

Zoom Link: https://zoom.us/j/153319823

Or iPhone one-tap :
US: +13126266799,,153319823# or +16468769923,,153319823#
Or Telephone:
Dial(for higher quality, dial a number based on your current location):
US: +1 312 626 6799 or +1 646 876 9923 or +1 301 715 8592 or +1 346 248 7799 or +1 408 638 0968 or +1 669 900 6833 or +1 253 215 8782
Webinar ID: 153 319 823
International numbers available: https://zoom.us/u/adBWphwtx6




Dr. Bertrand Thirion, INRIA/CEA/Neurospin France


September 2
12:00 pm - 1:00 pm
Event Category:


Chiara Maffei
Viviana Siless