title: Comment on "Cortical folding scales universally with surface area and thickness, not number of neurons".
abstract: The cerebrum of large mammals is convoluted, whereas that of small mammals is smooth. Mota and Herculano-Houzel (Reports, 3 July 2015, p. 74) inspired a model on an old theory that proposed a fractal geometry. I show that their model reduces to the product of gray-matter proportion times the folding index. This proportional relation describes the available data even better than the fractal model.
authors.affiliation: Institute of Sports Science, University of Münster, Horstmarer Landweg 62b, D-48149 Münster, Germany.
authors.forename: Marc H E
authors.initials: MH
authors.lastname: de Lussanet
mesh_terms: D000818:Animals; D002540:Cerebral Cortex; D006801:Humans; D054082:Lissencephaly / Q000473:pathology*; D009474:Neurons / Q000166:cytology*