Figure 4.
Comparison of modeling by visual angle and cortical distance. A, Sighted aggregate, along with models based on visual angle and cortical distance (mm). The between-hemisphere aggregate (n = 22) pattern matrix for the sighted group was modeled using a 2D Gaussian with units either of change in degrees of visual angle or change in cortical position between vertices. The R2 of the model fit to the aggregate pattern matrix is shown. B, Histograms of leave-one-out model performance across all sighted subjects. The 2D Gaussian model in units of either cortical position of visual angle was fit to an aggregate pattern matrix derived from 21 subjects. The correlation of this fit to the pattern matrix of the 22nd subject was obtained in a leave-one-out fashion. The Gaussian model cast in units of cortical distance had superior performance.