image: Increasing surface area of sheets of constant thickness results in crumpled paper balls that are increasingly folded, similar to cerebral cortices of constant thickness but expanding surface area. This material relates to a paper that appeared in the July 3, 2015 issue of Science, published by AAAS. The paper, by Bruno Mota at the Universidade Federal do Rio de Janeiro in Rio de Janeiro, Brazil, and colleagues was titled, 'Cortical folding scales universally with surface area and thickness, not number of neurons.' view more
Credit: [Credit: Suzana & Luiza Herculano-Houzel]