This model investigates the development of orientation selectivity and its binocular matching in visual cortex by implementing a neuron that has plastic synapses for its inputs from the left and right eye. The plasticity is taken to be voltage-based with homeostasis (Clopath et al 2010). The neuron is modeled as an adaptive exponential integrate-fire neuron. The uploaded model has been used in Xu, Cang & Riecke (2020) to analyze the impact of ocular dominance and orientation selectivity on the matching process. There it has been found that the matching can proceed by a slow shifting or a sudden switching of the preferred orientation.
Model Type: Synapse; Realistic Network; Neuron or other electrically excitable cell
Region(s) or Organism(s): Mouse
Cell Type(s): Abstract integrate-and-fire adaptive exponential (AdEx) neuron
Model Concept(s): Development; Long-term Synaptic Plasticity; Orientation selectivity; Synaptic Plasticity; Vision
Simulation Environment: MATLAB
Implementer(s): Riecke, Hermann [h-riecke at northwestern.edu]
References:
Xu X, Cang J, Riecke H. (2020). Development and Binocular Matching of Orientation Selectivity in Visual Cortex: A Computational Model. Journal of neurophysiology. 123 [PubMed]