Now, one of the things we were very interested in was the surface area of the cerebral cortex, or the thin, wrinkly layer on the outer surface of the brain that does most of the cognitive heavy lifting.
Un aspecto que nos interesaba especialmente era la superficie de la corteza cerebral, o la capa fina y arrugada  de la superficie cerebral externa. que se encarga de la mayor parte del trabajo pesado cognitivo.