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Monday, April 19, 2010
3:00 PM - 4:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Colloquium

Learning with one or more Integrate-and-Fire neurons

Remi Monasson
Laboratoire de Physique Théorique de l'ENS, Paris, France

The Integrate-and-Fire (IF) model, introduced more than one century ago, stands out among the highly non-linear dynamical models. Despite its simplicity, the IF model captures the essential features of a neural cell, and, as such, it has been widely used for decades in computational neurobiology.

In this talk I will address two aspects of the learning problem with one or more IF neurons:

1. to what extent can an IF neuron learn dynamical patterns of activities? This question is of importance to the highly debated question of the existence of time-based vs. frequency-based neural codes.

2. how can one infer the synaptic connections of an assembly of IF neurons from the observation of their spiking activity? A practical procedure will be proposed, and tested on synthetic data as well as multi-electrode recordings of retinal ganglion cells.

Host: Lenka Zdeborova