Figure 2.

Fitting MT receptive fields with a Gaussian profile. A, Distribution of R² values of the Gaussian fits to individual receptive fields in the different attentional conditions. Bar coloring indicates fits with an above-median (dark gray) and below-median (light gray) R² value. B–E, Examples of spline-interpolated (bottom, surfaces in two dimensions) and fitted (top, three-dimensional surfaces) receptive field profiles with an above-median R² value (B, C) and a below-median R² value (D, E).