Modelling the Population Level and Beyond D. G. Harrison 1 M. de - - PowerPoint PPT Presentation

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Model of Visual Attention CLAMVis MIIND Modelling the Population Level and Beyond D. G. Harrison 1 M. de Kamps 1 School of Computing University of Leeds 14 th March, 2012 M. de Kamps, D. G. Harrison Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Modelling the Population Level and Beyond

M. de Kamps
D. G. Harrison1

1School of Computing

University of Leeds

14th March, 2012

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Funding for the Neurosciences

Three drivers: Health related Brain-inspired technology Understanding brain/mi(i)nd

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Spatial Structure

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Local Circuit

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Circuits

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND CLAMVis XML

Outline

1

Model of Visual Attention

2

CLAMVis CLAMVis XML Structure

3

MIIND

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND CLAMVis XML

CLAMVis Top Level Elements

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND CLAMVis XML

Layer Descriptions and Networks

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND CLAMVis XML

Circuit Descriptions

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND CLAMVis XML

Dynamic Networks

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND CLAMVis XML

Simulations

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND CLAMVis XML

Is This Neuroscience?

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Modelling Populations: MIIND

Sophisticated Population Dynamics

Wilson-Cowan Dynamics Population Density method

Describes large populations of leaky-integrate-and-fire neurons Fokker-Planck but better; no diffusion limit

ρ(v)dv: fraction of

population with membrane potential in [v,v + dv) Balance excitation-inhibition

t (s) 20 40 60 80 100 120 140 160 180 200

10 × f (Hz) 2 4 6 8 10 12 14 16 18 20 V (V) 5 10 15 20 25

10 × ρ 0.05 0.1 0.15 0.2 0.25

10 × (V) µ 12 13 14 15 16 17 18 19 20 21 22

10 × f (Hz) 2 4 6 8 10 12 14 16 18 20

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Short Demo

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Conclusions

Many ’cognitive’ models use stereotypic coding patterns which can easily be captured in XML The population is a natural bridge between ’basic’ neuroscience and more higher level models The population level scales well, although it may not be appropriate in every situation Much replication effort can be avoided by extending the NeuroML, NineML domains Very much in the interest of the neurosciences, given the drivers for funding

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Status

MIIND: public; XML available (slightly brittle). Documentation, patchy, but improving: http://miind.sf.net Soon: generic 1D neural model solver (not just LIF: QIF as well) Aim: Generic 2D population solver

Izhikevich adaptive exponential synapses

Working on cloud implementation, web interface, tutorial ClamVis: Dave’s project. Not really public but check out:

http://stacker.me.uk/~daveh/NetSimDocs/ projectxmlformat.html

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond

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Model of Visual Attention CLAMVis MIIND

Acknowledgement

Dave Harrison: modelling, XML stuff Robert Cannon Padraig Gleesson, Angus Silver

M. de Kamps, D. G. Harrison

Modelling the Population Level and Beyond