Upon further analysis of the Sillito et al. The model also provided some interesting predictions on the state of the cortex during the process. We have recently focused on modeling feedback in corticocortical systems. We have constructed a model using a hierarchy of cortical networks to illustrate that feedback, along with a very simple connectivity scheme, can reproduce the experimental results quite well. Each neuron contains channels for synaptic connections and action-potential generation.
All connections are of equal strength and relatively weak.
Effective connectivity between cells not directly connected, but receiving shared input from a third cell, is predicted to be extremely weak by the analytical model, and found to be undetectable in the simulation results. However, increased correlation between the background inputs to the two cells greatly strengthens this effective connectivity. This suggests that significant shared input correlations seen in cortical recordings are due to synchronous input from many cells.