Cortically-Controlled Population Stochastic Facilitation as a Plausible Substrate for Guiding Sensory Transfer across the Thalamic Gateway
Figure 2
Network topology affects the retinocortical transfer of sensory information in computo.
A. Transfer efficiency as a function of the thalamic population size. Each point represents the simulation of a modeled convergent circuit for three predefined TC AMPA synaptic weights in addition to a special case (dashed line) where the synaptic weight was adjusted to the thalamic population size on a per-simulation basis (see text for more details). The thickness of the curves represent the standard deviation across ten repetitions of the same retinal sensory simulation realized each time in the context of a different realization of the cortical synaptic bombardment. B. Transfer efficiency as a function of the TC AMPA synaptic weight for three predefined thalamic population size. C. Influence of the level of retinal input synchronization. The TE was measured for varying retinothalamic spike-time mean jitters and retinal synchronization levels (see text for more details). D. Transfer efficiency measured as a function of the thalamocortical spike-time mean jitter.