Connectionists: World wide VVTNS series (fifth season): Wednesday, February 19, 2025, at 11:00 am EST| Jens-Bastian Eppler , Centre de Recerca Matemàtica Barcelona

[David Hansel]

[image: VVTNS.png]
https://www.wwtns.online
<https://streaklinks.com/A9c7PbbpKY7PxB6PaAJWGD3-/https%3A%2F%2Fwww.wwtns.online>
-
on twitter: wwtns at TheoreticalWide

You are cordially invited to the lecture given by

Jens-Bastian Eppler

 Centre de Recerca Matemàtica Barcelona
<https://www.researchgate.net/institution/Goethe-Universitaet_Frankfurt_am_Main?_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InByb2ZpbGUiLCJwYWdlIjoicHJvZmlsZSJ9fQ>
 on the topic of

Representational drift reflects ongoing balancing of stochastic changes by
Hebbian learning


The lecture will be held on zoom on Wednesday, February 19, 2025, at *11:00
am EST *
To receive the link: https://www.wwtns.online/register-page

*Abstract: * Even in stable environments, sensory responses undergo
continuous reformatting, a phenomenon known as representational drift.
Using chronic calcium imaging in mouse auditory cortex, we show that during
this representational drift signal correlations predict future noise
correlations, suggesting that stimulus-driven co-activation strengthens
effective connectivity via Hebbian-like plasticity. Linear network models
reveal that these temporal dependencies between signal and noise
correlations emerge only when Hebbian learning balances stochastic synaptic
changes, preventing functional degradation. Our findings highlight how
ongoing input-driven plasticity stabilizes neural representations amidst
inherent synaptic variability.

*About VVTNS : Launched as the World Wide  Theoretical Neuroscience Seminar
(WWTNS) in November 2020 and renamed in homage to Carl van Vreeswijk in
Memoriam (April 20, 2022), Speakers have the occasion to talk about
theoretical aspects of their work which cannot be discussed in a setting
where the majority of the audience consists of experimentalists. The
seminars, **held on Wednesdays at 11 am ET,**  are 45-50 min long followed
by a discussion. The talks are recorded with authorization of the speaker
and are available to everybody on our YouTube channel.*
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