Fig. 3: Measurements of the surface area of early visual field maps and the cortical sheet.

a Surface area (millimeters2) of V1, V2, and V3 for adults (n = 24) and children (n = 25). Individual data are plotted as black data points and the colored horizontal line represents the group-median surface area. Because the surface areas are summed across hemispheres, the values are about double those in Fig. 2. b The total surface area (meters2) of the cortical sheet for adults (n = 24) and children (n = 25). Individual data are plotted as red data points and the black horizontal line represents the median surface area. For both (a) and (b), the top and bottom edges of each box represent the 75th and 25th percentiles, respectively, and the whiskers extend to the maxima and minima data points not considered outliers. The y-axes are matched so that the scaling in (b) is 100x the size of that in (a). Source data are provided as a Source Data file.