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UID:20260810T101332EDT-92786FgJR9@132.216.98.100
DTSTAMP:20260810T141332Z
DESCRIPTION:Séminaire Applied Mathematics/Mathématiques appliquées\n\nBurns
 ide Hall 920\, Â鶹Éç\n\nAround the complex interplay of spatia
 l organization\, heterogeneity and collective dynamics of neuronal network
 s\n\nJonathan Touboul\, Inria et College de France\n\nSite web : http://ww
 w.dms.umontreal.ca/~mathapp/index_fr.html\n\nAbstract:\n\nIncreasing biolo
 gical evidence suggests that the anatomical and functional organization of
  neuronal networks of the brain subtend their function. This talk will dis
 cuss a few questions related to this interplay and on which mathematical a
 pproach can shed new light. First\, I will discuss the characterization of
  large-scale dynamics of randomly connected neural networks\, in particula
 r taking into account their multi-scale connectivity patterns. I will inve
 stigate the role of noise and disorder in these macroscopic dynamics\, wit
 h a particular focus on a mysterious and somewhat paradoxical role of nois
 e or disorder in synchronizing neurons. Closer from biology\, I will prese
 nt a new dataset and analyses on the functional organization of the visual
  cortex that tend to indicate that orientation and spatial frequency of si
 mple stimuli organize within continuous maps with common punctual singular
 ities that have a very particular pinwheel-dipole topology. Using argument
 s from planar topology\, I will show that how these may reveal that exhaus
 tivity and parsimony of representation may be fundamental organization pri
 nciples of the primary visual area.\n
DTSTART:20161128T200000Z
DTEND:20161128T210000Z
LOCATION:room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Jonathan Touboul\, Inria et College de France
URL:/channels/event/around-complex-interplay-spatial-o
 rganization-heterogeneity-and-collective-dynamics-neuronal-network-264366
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