Figure 1
From: Modeling the development of coarse-to-fine processing in the central visual pathway
Effects of selected model parameters on SF tuning in the visual cortex. Top panels show representative LGN and cortical spatiotemporal receptive fields at low and high ends of the intervals considered. Plots (bottom) show cortical peak SF shift for various values of parameters for each age group. Each point corresponds to the mean taken from 100 simulations, and shaded regions enclose ±1 SEM away from the mean. Center-surround delays are taken from experimental data [2] (8, 12, 16 ms for adults, 8- and 4-week old kittens, respectively). (A) Cortical peak SF shift as a function of surround-center ratio. There was no cortical feedback in this set of simulations. (B) Cortical peak shift as a function of cortical feedback strength C. The spatial spread of the feedback a was fixed at 0.075. Surround-center ratios were 0.3, 0.2, 0.1 for adults, 8- and 4-week old kittens, respectively [2].