E-I-E direction-selective motion discrimination visual cortex traveling waves (Heitmann et al 2020)

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Accession:266770
The direction-selective responses of neurons in visual cortex cannot be separated into independent spatial and temporal processes. Contemporary theories of how neurons compute non-separable responses typically rely on finely tuned transmission delays. However the existence of such delays is controversial. We propose an alternative neural mechanism for computing non-separable responses that relies on the predisposition of the cortical tissue to spontaneously generate traveling waves of neural activity. We propose that these endogenous waves resonate with the visual stimulus to elicit direction-selective neural responses without resort to time delays.
Reference:
1 . Heitmann S, Ermentrout GB (2020) Direction-selective motion discrimination by traveling waves in visual cortex PLOS Computational Biology, in press
Model Information (Click on a link to find other models with that property)
Model Type: Neural mass; Neuron or other electrically excitable cell;
Brain Region(s)/Organism:
Cell Type(s):
Channel(s):
Gap Junctions:
Receptor(s):
Gene(s):
Transmitter(s):
Simulation Environment: Brain Dynamics Toolbox;
Model Concept(s): Direction Selectivity; Spatio-temporal Activity Patterns; Motion Detection;
Implementer(s): Heitmann, Stewart [S.Heitmann at victorchang.edu.au];
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opponentmotion
README.txt
EI0D.m
EI1D.m
EIE0D.m
EIE1D.m
                            
This folder contains matlab source code for the E-I and E-I-E models described in:

   Heitmann & Ermentrout (2020) Direction-selective motion discrimination
     by traveling waves in visual cortex. PLOS Computational Biology.

   Heitmann & Ermentrout (2016) Propagating Waves as a Cortical Mechanism
    of Direction-Selectivity in V1 Motion Cells. Proc of BICT'15. New York.

The models require the Brain Dynamics Toolbox which can be downloaded for free
from https://bdtoolbox.org. They were implemented using Version 2019a of the toolbox.

The files are as follows:
   EI0D.m     is the point E-I model
   EI1D.m     is the ring  E-I model
   EIE0D.m    is the point E-I-E model
   EIE1D.m    is the ring  E-I-E model

All source code was written by Stewart Heitmann <s.heitmann@victorchang.edu.au>.
Each program has its own HELP text which describes how to run it. For example:

>> help EI0D

   EI0D Point model of E-I cells with Wilson-Cowan dynamics 
   for the Brain Dynamics Toolbox (https://bdtoolbox.org)
 
   EXAMPLE:
      addpath ~/bdtoolkit
      sys = EI0D();
      gui = bdGUI(sys);
 
   AUTHOR
     Stewart Heitmann (2018,2019,2020)
 
   REFERENCES
     Heitmann & Ermentrout (2020) Direction-selective motion discrimination
        by traveling waves in visual cortex. PLOS Computational Biology.
     Heitmann & Ermentrout (2016) Propagating Waves as a Cortical Mechanism
        of Direction-Selectivity in V1 Motion Cells. Proc of BICT'15. New York.

Refer to the Handbook for the Brain Dynamics Toolbox (Heitmann & Breakspear,
2017-2019) for instructions on installing and running the toolbox itself.

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