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laurentperrinet committed Sep 24, 2024
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Expand Up @@ -13,43 +13,45 @@ We are organizing a one-day workshop for computational neuroscientists in Marsei

When? *3rd of June 2024*

Where? [*Campus Timone (Amphithéâtre d'Odontologie), Aix-Marseille Université*, 27 Boulevard Jean Moulin, 13005 Marseille](https://goo.gl/maps/MLpmsN9cd2N1Uv1L7)
Where? [*Campus Timone (Amphithéâtre d'Odontologie), Aix-Marseille Université*, 27 Boulevard Jean Moulin, 13005 Marseille](https://maps.app.goo.gl/s7RUwYNq9yMpH3Kf8)

Organizers: Fanny Cazettes (INT), Spase Petkoski (INS), Etienne Thoret (INT), Lorenzo Fontolan (INMED)

The organizing committee thanks NeuroMarseille and the three partners institutes (INS, INMED, INT) for their support.

### PROGRAM

- 9:00 : Welcome

- 9:15 : Introduction by Frédéric Chavane (INT, Marseille)
- 9:15 : Introduction by **Frédéric Chavane** (INT, Marseille)

#### Session 1 : INMED (chair: Fanny Cazettes)

- 9:30 : **Lorenzo Fontolan** (CENTURI, INMED)
- 9:30 : **Lorenzo Fontolan** (CENTURI, INMED): *Neural circuits for temporal flexibility*

- 10:00 : **Mirindra Ratsifandrihamanana** (INMED)
- 10:00 : **Mirindra Ratsifandrihamanana** (INMED): *Linking early hippocampal dynamics and animal behavior using information theory in physiological and pathological conditions*

- 10:20 : coffee break
- 10:20 : coffee break @ INT-R+4

#### Session 2 : INS (chair: Lorenzo Fontolan)

- 10:45 : **Christophe Bernard** (INS)
- 10:45 : **Christophe Bernard** (INS): *Complexities in interpretations of opto-chemogenetics effects and of dimensionality reduction*

- 11:15 : **Borana Dollomaja** (INS)
- 11:15 : **Borana Dollomaja** (INS): *Diagnostic approaches for drug-resistant epilepsy: whole brain models and brain stimulation*

#### Session 3 : INT (chair: Spase Petkoski)

- 11:35 : **Sophie Denève** (INT)
- 11:35 : **Andrea Brovelli** (INT): *Brain interactions and goal-directed learning*

- 12:05 : **Adrien Fois** (INT)
- 12:05 : **Adrien Fois** (INT): *Unsupervised Learning of Spiking Motifs*

- 12:30 : Lunch break
- 12:30 : Lunch break @ INT-R+4

#### Session 4 : Marseille institutes (chair: Etienne Thoret)

- 14:00 - **NeuroMarseille** - Anne Kavounoudias (CRPN)
- 14:00 - **NeuroMarseille** - Anne Kavounoudias (CRPN) & Guillaume Masson (INT)

- 14:15 - **eBrains** - Viktor Jirsa (INS)
- 14:15 - **eBrains** - Viktor Jirsa (INS) - *European infrastructure for digital neuroscience*

- 14:30 - **CENTURI** - Rosa Cossart (INMED)

Expand All @@ -59,13 +61,14 @@ Organizers: Fanny Cazettes (INT), Spase Petkoski (INS), Etienne Thoret (INT), Lo

- 15:15 - **CONECT** - Anna Montagnini (INT)

- 16:35 : Coffee break
- 15:30 : Coffee break @ INT-R+4


#### External Keynote speaker (chair: Spase Petkoski)
#### External Keynote speaker (chair: Lorenzo Fontolan)

- 16:00 - Srdjan Ostojic (LNC, ENS)
- 16:00 - **Srdjan Ostojic** (LNC, ENS): *The role of population structure in computations through dynamics*

**Abstract:** Neural computations are currently conceptualised using two separate approaches: sorting neurons into functional sub-populations or examining distributed collective dynamics. Whether and how these two aspects interact to shape computations is currently unclear. Using a novel approach to extract computational mechanisms from recurrent networks trained on neuroscience tasks, we show that the collective dynamics and sub-population structure play fundamentally complementary roles. Although various tasks can be implemented in networks with fully random population structure, we found that flexible input–output mappings instead require a non-random population structure that can be described in terms of multiple sub-populations. Our analyses revealed that such a sub-population organisation enables flexible computations through a mechanism based on gain-controlled modulations that flexibly shape the collective dynamics.



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