[CompNeuro] COBRA seminar May 28th: Ján Antolík - Data-driven modelling of early visual system

[Jaroslav Hlinka]

Dear colleagues,

let me invite you to an upcoming event at the Department of Complex 
Systems, ICS CAS:

Complex Networks and Brain Dynamics Seminar - 28 May, 2019, 16:00

** Data-driven modelling of early visual system **

                    Ján Antolík
Faculty of Mathematics and Physics, Charles University, Prague


Neuroscience has produced a large body of data on the function and 
anatomy of
brain but the transformation of this knowledge into a coherent understanding
has been limited. Computational modeling can integrate such fragmented data
into models of brain structures that satisfy the broad range of constraints
imposed by experiments, thus advancing our understanding of their 
computational
role, and their implementation in the neural substrate. In the first part of
the lecture I will present a comprehensive multi-scale spiking model of cat
primary visual cortex satisfying a range of anatomical, statistical and
functional properties. It considers cortical layers 4 and 2/3, 
corresponding to
a 5x5 mm patch of V1. We have subjected the model to numerous visual
stimulation protocols covering a wide range of input statistics, from sparse
noise to natural scenes with simulated eye-movements. The model 
expresses over
multiple scales a number of statistical and functional properties previously
identified experimentally including: spontaneous activity with a
physiologically plausible resting conductance regime; contrast-invariant
orientation-tuning width; realistic adaptive interplay between evoked
excitatory and inhibitory conductances; center-surround interaction effects;
and stimulus-dependent changes in the precision of the neural code as a
function of input statistics. This data-driven model offers numerous 
insights
into how the studied properties interact, and thus contributes to a better
understanding of visual cortical dynamics.


Where: Room 318 (2nd floor), Institute of Computer Science, Czech 
Academy of Sciences,
        Pod Vodárenskou věží 2, Prague 8 ( http://goo.gl/maps/gY3NZ )

Seminars webpage: http://cobra.cs.cas.cz/seminar

-- 
Jaroslav Hlinka
Head of the Department of Complex Systems
Institute of Computer Science
Czech Academy of Sciences
Pod Vodarenskou vezi 2
Prague 8, 182 07, Czech Republic

Tel: (+420) 26605 3808
E-mail: hlinka at cs.cas.cz
Web: http://www.cs.cas.cz/hlinka/

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