[CTN] CTN seminar: Wilten Nicola (University of Calgary): 3:30 Oct 8, E5 2004

[Bryan Tripp]

Hi everyone,

Just a reminder about the talk today. Hope to see you there!

Bryan


On Wed, Sep 25, 2019 at 10:28 PM Bryan Tripp <bptripp at gmail.com> wrote:

> Hi everyone,
>
> Please join us for the next CTN talk with Prof. Wilten Nicola (details
> below). Some of you will remember this speaker from his time as a student
> at the University of Waterloo. He has since been at Imperial College London
> as a post-doc, and is now at the University of Calgary. He will be
> presenting work from this astonishing paper:
> https://www.nature.com/articles/s41593-019-0415-2
>
> Bryan
>
>
> Fast, Compressible Learning in the Hippocampus using Interneuron Sequences
> Wilten Nicola, University of Calgary
>
> Abstract
> The hippocampus is able to rapidly learn incoming information, even if
> that information is only observed once. Furthermore, this information can
> be replayed in a compressed format in either forward or reverse modes
> during sharp wave–ripples (SPW–Rs). We leveraged state-of-the-art
> techniques in training recurrent spiking networks to demonstrate how
> primarily interneuron networks can achieve the following: (1) generate
> internal theta sequences to bind externally elicited spikes in the presence
> of inhibition from the medial septum; (2) compress learned spike sequences
> in the form of a SPW–R when septal inhibition is removed; (3) generate and
> refine high-frequency assemblies during SPW–R-mediated compression; and (4)
> regulate the inter-SPW interval timing between SPW–Rs in ripple clusters.
> From the fast timescale of neurons to the slow timescale of behaviors,
> interneuron networks serve as the scaffolding for one-shot learning by
> replaying, reversing, refining, and regulating spike sequences.
>
>
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