[Todos] Recordatorio Seminario del IFLP/Dto Fisica - HOY 10:30hs

[Maria Virginia Manias]

*SEMINARIOS  DEL IFLP y DEL DEPARTAMENTO*

*MARTES 2 de MAYO – 10:30 hs*

*AULA CHICA*


*TÍTULO**: **"Modelling Higher-order correlations in multi-neuron inputs
and outputs in a population of neurons"*



*EXPOSITOR:* *Dr Fernando Montani*

*IFLYSIB – CONICET/UNLP*


*Resumen:* To understand how sensory information is processed in the brain,
we need to investigate how information is represented collectively by the
activity of a population of neurons. Information can be carried in spike
rate, spike timing, and spike correlations across neurons. Spike
correlations across neurons are widely found in the brain, and the
evidences show that pairwise correlations do not by themselves account for
multineuronal firing patterns. Indeed, the relationship between noise and
signal correlations, when considering higher order correlations can lead
either to redundancy or synergy at population level. Evidence shows that
higher order correlations in the neuronal inputs and the spiking outputs
follow a non-Gaussian statistics suggesting the need of developing a new
theoretical framework taking into account the complexity of synchronous
activity patterns. We analyze how input statistics are transformed through
a threshold process into output statistics, and investigate the conditions
that may lead to higher-order correlations in a neuronal ensemble. This
allows us to define a new scenario for the interplay between pairwise and
higher-than-pairwise interactions.
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