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Wednesday, 5 pm CET, i.e, 11 am ET


Organized by David Hansel, Ran Darshan

& Carl van Vreeswijk (1962-2022) 

About Us

About the Seminar

VVTNS  is a weekly digital seminar on Zoom targeting the theoretical neuroscience community. Created as the World Wide Neuroscience Seminar (WWTNS) in November 2020 and renamed in homage to Carl van Vreeswijk in Memoriam (April 20, 2022), its aim is to be a platform to exchange ideas among theoreticians. 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  are 45 min long followed by a discussion and are held on Wednesdays at 11 am EDT. The talks are recorded with authorization of the speaker and are available to everybody on our YouTube channel.


To participate in the seminar you need to fill out a registration form after which you will

receive an email telling you how to connect.

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Eve Marder

Brandeis University

June 26, 2024


VVTNS Fourth Season Closing Lecture

Cryptic (hidden) changes that result from perturbations and climate change shape future dynamics of degenerate neurons and circuits

A fundamental problem in neuroscience is understanding how the properties of individual neurons and synapses contribute to neuronal circuit dynamics and behavior.  In recent years we have done both computational and experimental studies that demonstrate that the same physiological output can arise from multiple, degenerate solutions, and that individual animals with similar behavior can nonetheless have quite different sets of underlying circuit parameters.  Most recently, we have been studying the resilience of individual animals to perturbations such as temperature and high potassium concentrations.  This has revealed that extreme environmental experiences can produce long-term changes in circuit performance that can be hidden, or “cryptic” unless the animals are again challenged or perturbed.  Our present experimental and computational work is designed to understand differential resilience in natural, wild-caught animals in response to climate change, and shows long-lasting influences of the animals’ temperature history.  



David Hansel

I am a theoretical neuroscientist at the National Center for Scientific Research in Paris, France and visiting professor at The Hebrew University in Jerusalem, Israel. I am mainly interested in the recurrent dynamics in the cortex and 

basal ganglia.

Carl van Vreeswijk *

I am a theoretical neuroscientist working at the National Center for Scientific Research in Paris, France. My main interest is the dynamics of recurrent networks of neurons in the sensory system.



Ran Darshan

 I am a theoretical neuroscientist working at the Faculty of Medicine, the Sagol School of Neuroscience & the School of Physics and Astronomy at Tel Aviv University, Israel. I am interested in learning and dynamics of neural networks. My main goal is to achieve a mechanistic understanding of brain functions.

©2020 by WWTNS

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