Figure 1From: Focal cortical dysplasias in autism spectrum disorders Solution of the Laplace equation inside the cortical ribbon. The outer contour is the lamina I/lamina II boundary φ = –1 ; the inner contour is the white matter boundary φ = +1; and the midline is the equipotential φ = 0. Field lines are displayed spaced at 1 mm intervals along the midline.Back to article page