Statistical Analysis and Modeling

of Response Dependencies in Neural Populations

NIPS Conference

A NIPS 2008 Workshop, December 12-13, 2008

The Hilton Whistler Resort & Spa: Mt. Currie N


BCCN Berlin

Sponsored by the Bernstein Center for Computational Neuroscience

Organizers: Arno Onken (Primary Contact), Klaus Obermayer, Valentin Dragoi, Steffen Grünewälder, Denise Berger


Goal of the workshop:

It is well known that sensory and motor information is represented in the activity of large populations of neurons. Encoding and decoding is subject of active research. The two dominant theories of neural coding are rate and temporal coding. They are studied by considering the dependencies between responses of several neurons. In the typical theoretical framework, response dependencies are characterized by correlation coefficients and cross-correlograms. The main goal of this workshop is to challenge the dependency concepts that are typically applied and to disseminate more sophisticated concepts to a wider public. It will bring together experts from different fields and encourage exchange of insights between experimentalists and theoreticians.

Issues to be discussed:

  • How important are response dependencies for neural coding?
  • What are the consequences of simplified assumptions?
  • How should response dependences be measured?
  • How do we generate parametric models based on recorded data?
  • Discrete vs. continuous descriptions of neural activity: Which description is more appropriate?
  • What are the limitations of experimental and analytical methods that we currently face? What can be done to overcome them?
Schedule
Day 1 Morning  
07:30-07:45
07:45-08:15
08:15-08:45
08:45-09:00
09:00-09:30
09:30-10:00
10:00-10:30
Introduction
Beyond correlations: modeling neural dependencies with copulas abstract slides paper
Copula-based point process models of neural dependence abstract slides paper
Coffee break
Dual coding by spiking neural networks abstract slides related_publications
Low-dimensional single-trial analysis of neural population activity abstract paper
Estimating neural signal dependence using kernels abstract slides

Pietro Berkes
Rick Jenison

Naoki Masuda
Byron Yu
Nishant Mehta
10:30-15:30Break 
Day 1 Afternoon  
15:30-16:15
16:15-16:45
16:45-17:00
17:00-17:40
17:40-18:10
18:10-18:30
Inter-neuronal connectivity and correlation in a model of V1 simple cells abstract slides
The flashlight transformation for mixture copula based modeling of spike-counts abstract slides paper
Coffee break
Adaptive coding in visual cortical networks abstract slides
Optimal inference from population of neurons in macaque primary visual cortex abstract
Open discussion
Wyeth Bair
Arno Onken

Valentin Dragoi
Arnulf Graf

 
Day 2 Morning  
07:30-08:00
08:00-08:30
08:30-08:45
08:45-09:30
09:30-10:00
10:00-10:30
Identification of assembly activity by simultaneous spike trains and local field potential abstract publications
Spatially organized higher-order spike synchrony in cat area 17 abstract
Coffee break
Relating response variability across stages of cortical processing abstract
How pairwise correlations shape the statistical structure of population activity abstract
Discussion
Sonja Grün
Denise Berger

Adam Kohn
Jakob Macke

10:30-15:30Break 
Day 2 Afternoon  
15:30-16:15
16:15-16:30
16:30-17:00
17:00-17:30
17:30-18:30
Modelling dependent count data abstract slides bibliography
Coffee break
Capacity of a single spiking neuron for temporal and rate coding abstract slides
State-space analysis on time-varying higher-order spike correlations abstract
Open discussion
Dimitris Karlis

Shiro Ikeda
Hideaki Shimazaki