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  • Nov
    29

    Victor Barranca: Reconstruction of Neuronal Network Connectivity and Rivalrous Percepts Via Compressive Sensing of Network Dynamics

    McCormick-Engineering Sciences and Applied Mathematics (ESAM)

    11:15 AM M416 and online at https://northwestern.zoom.us/j/96091762215, Technological Institute

    EVENT DETAILS

    Title: Reconstruction of Neuronal Network Connectivity and Rivalrous Percepts Via Compressive Sensing of Network Dynamics

    Speaker: Victor Barranca, Associate Professor of Mathematics, Swarthmore College

    Abstract: Neuronal network connectivity demonstrates sparsity on multiple spatial scales and natural stimuli also possess sparse representations in numerous domains. In this talk, we underline the role of sparsity in the efficient encoding of network connectivity and inputs through nonlinear neuronal network dynamics. Addressing the fundamental challenge of recovering the structural connectivity of large-scale neuronal networks, we leverage properties of the balanced dynamical regime and compressive sensing theory to develop a theoretical framework for efficiently reconstructing sparse network connections through measurements of the network response to a relatively small ensemble of random stimuli. We further utilize sparse recovery ideas to probe the neural correlates of binocular rivalry through dynamic percept reconstructions based on the activity of a two-layer network model with competing downstream pools driven by disparate image stimuli. The resultant model dynamics agree with key experimental observations and give insights into the excitation/inhibition hypothesis for autism.

    **Please note, this event will be held in-person, as well as online via Zoom at the following link: https://northwestern.zoom.us/j/96091762215

    Special Note: This colloquium is on Tuesday at 11:15am, the new regular time for the applied math colloquium.

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    TIME Tuesday, November 29, 2022 at 11:15 AM - 12:15 PM

    LOCATION M416 and online at https://northwestern.zoom.us/j/96091762215, Technological Institute    map it

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    CONTACT Ted Shaeffer    ted.shaeffer@northwestern.edu EMAIL

    CALENDAR McCormick-Engineering Sciences and Applied Mathematics (ESAM)

  • Dec
    5

    Fall examinations begin

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Monday, December 5, 2022

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar

  • Dec
    10

    Fall examinations end

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Saturday, December 10, 2022

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar

  • Dec
    10

    Northwestern Engineering PhD Hooding and Master's Recognition Ceremony

    McCormick School of Engineering and Applied Science

    4:00 PM Pick-Staiger Concert Hall

    EVENT DETAILS

    TIME Saturday, December 10, 2022 at 4:00 PM - 5:30 PM

    LOCATION Pick-Staiger Concert Hall    map it

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    CONTACT Northwestern Engineering Events    northwestern-engineering-events@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Dec
    16

    Fall Degrees Conferred

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Friday, December 16, 2022

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar