BARCCSYN 2024
to May 31, 2024
information
BARCCSYN PAST EDITIONS
organizers
Keynote speakers
Does efficient value synthesis in the OFC explain how risk attitude adapts to the range of risk prospects?
Jean Daunizeau
Institut du Cerveau, INSERM
ABSTRACT
Is irrational behavior the incidental outcome of biological constraints imposed on neural information processing? Recent studies indicate that orbitofrontal neurons encode decision value in relative terms, i.e. value signals in OFC neurons are normalized with respect to the context. Value-based decisions may thus exhibit irrational context-dependence effects. A candidate explanation is “efficient coding”: OFC neurons may minimize information loss by adapting their (bounded) output firing properties to the recent value range. This is seducing, because it suggests that relative value coding is the brain’s best attempt to mitigate its own hard-wired biological constraints. However, whether the behavioral implications of this scenario are met, how it generalizes to realistic situations in which OFC neurons construct value from multiple decision-relevant attributes – which we coin “value synthesis” – and what its neurophysiological bases are, is unclear. Here, we approach these issues from a neurocomputational perspective. First, we show how artificial neural networks can self-organize through neo-hebbian rewiring processes to operate efficient value synthesis, i.e. value synthesis that is robust to neural perturbations. Importantly, we show that such mechanism predicts that value synthesis progressively adapts to the experienced range of decision attributes. In turn, the relative weight of decision-relevant attributes onto value-based decisions is inversely proportional to their respective range. We then test these predictions on two open fMRI datasets from the OpenNeuro.org initiative, where people have to integrate prospective gains and losses to decide whether to gamble or not. We show that peoples’ risk attitudes critically depend on the range of gain/loss prospects they are exposed to (in the absence of feedback). We also show that, when adjusted to explain peoples’ irrational choices, efficient value synthesis in neural networks predicts (out-of-sample) the representational content of multivariate fMRI activity patterns in the OFC. Our results suggest that some forms of irrational behavior may be the corollary consequence of self-organization in OFC networks that operate efficient value synthesis.
Julie Duqué
Université Catholique de Louvain
Full Professor, Head of the CoActions Lab. Our research broadly explores a range of questions pertaining to the cognitive neuroscience of human behavior. We conduct experiments to explore the interaction between cognition and action in neurologically healthy and impaired individuals. We use a variety of techniques to characterize the functional role of different parts of the motor pathways including transcranial magnetic stimulation (TMS), functional and structural magnetic resonance imaging (MRI) and electroencephalography (EEG). Development of a closed-loop TMS-EEG setup will allow us to explore the role of sensorimotor neural oscillatory activity on motor output.
List of participants
Name | Institution |
---|---|
Pan Ye Li | Centre de Recerca Matemàtica |
Daniel Linares | Universitat de Barcelona |
Joan López-Moliner | Universitat de Barcelona |
Estefanía Moreno | Universitat de Barcelona |
Alex Roxin | Centre de Recerca Matemàtica |
Ernest Montbrió | Universitat Pompeu Fabra |
Manuel Molano-Mazón | IDIBAPS |
Melanie Tschiersch | IDIBAPS |
Albert Compte | IDIBAPS |
Lucía Arancibia | Centre de Recerca Matemàtica |
Alexandre Garcia-Duran | Centre de Recerca Matemàtica |
Melina Timplalexi | Universitat Internacional de Catalunya |
Citlalli Vivar | Centre de Recerca Matemàtica |
Jean Daunizeau | INSERM / Paris Brain Institute |
Meritxell Vila Miñana | Universitat Politècnica de Catalunya |
Klaus Wimmer | Centre de Recerca Matemàtica |
Julie Duque | Université catholique de Louvain |
Aiswarya Sarn | IDIBAPS |
Licheng Zou | Centre de Recerca Matemàtica |
M. Victoria Puig | Institut d\'Investigacions Biomèdiques de Barcelona (IIBB-CSIC) |
Cristina López Cabezón | CSIC |
Sara Hidalgo Nieves | CSIC |
Thomas Gener | Universitat Autònoma de Barcelona |
Antonio Fernández Guerrero | Universitat Autònoma de Barcelona |
Silvana Silva Pereira | Universitat Autònoma de Barcelona |
Rúben Faria Correia | Universitat Autònoma de Barcelona |
Yannick Bollmann | Universitat Autònoma de Barcelona |
Gemma Huguet Casades | Universitat Politècnica de Catalunya |
Benjamín Pascual Estrugo | Universitat Politècnica de València |
Marta Boscaglia | University of Leicester |
Adria Moran | IDIBAPS |
Hernando Martinez Vergara | IDIBAPS |
Alberto Pérez Cervera | Universitat Politècnica de Catalunya |
Jakub Vohryzek | Universitat Pompeu Fabra |
Pierre Houzelstein | École normale supérieure - Paris |
Marta Picco | Fundació Institut Hospital del Mar d\\\'Investigacions Mèdiques |
Sebastián Rodriguez | Universitat Autònoma de Barcelona |
Tomas Berjaga Buisan | Universitat Pompeu Fabra |
Ezequiel León Saidman | Fundació IMIM |
Sara Ibañez | Centre de Recerca Matemàtica |
Cristina Rodríguez-Arribas | Universitat de Barcelona |
Rosa Maria Delicado Moll | Universitat de Les Illes Balears |
Leonardo Rodrigues da Costa | University of Campinas |
Aikaterini Kalou | Universitat Autònoma de Barcelona |
Balma Serrano Porcar | Universitat de Barcelona |
Maxwell Kreider | Case Western Reserve University |
Pau Pomés | Universitat Pompeu Fabra |
Ignasi Cos | Universitat de Barcelona |
Caterina Barezzi | IDIBAPS |
Irene Acero Pousa | Universitat Pompeu Fabra |
Gorka Zamora-López | Universitat Pompeu Fabra |
Mariana Echevarría Rodríguez | Universitat Pompeu Fabra |
Poster and contributed talks
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- Deadline: April 24th, 2024
- Resolutions will be sent before May 3rd, 2024
To apply, please, finalise the registration procedure and then submit the abstract of your talk using the form below:
CONTRIBUTIONS CLOSED
PRIZES
There will be prizes for the best students contributions
social event
A social event at Torres del Paine is being organised for May 31st after the conference. Further information will be posted when the date approaches.
registration
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INVOICE/PAYMENT INFORMATION
IF YOUR INSTITUTION COVERS YOUR REGISTRATION FEE: Please note that, in case your institution is paying for the registration via bank transfer, you will have to indicate your institution details and choose “Transfer” as the payment method at the end of the process.
UPF | UB | UPC | UAB
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IDIBAPS
*If the paying institution is IDIBAPS, please send an email to comptabilitat@crm.cat with the Project reference code that will cover the registration cost, to be added to the invoice if necessary.
Paying by credit card
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LODGING INFORMATION
ON-CAMPUS AND BELLATERRA
BARCELONA AND OFF-CAMPUS
For inquiries about this event please contact the Scientific Events Coordinator Ms. Núria Hernández at nhernandez@crm.cat
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