english: 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.
non_english: İlgilendiğimiz şeylerden birisi serebral korteksin yüzeyi veya en çok kavramsal  yetenekleri yapan beynin dış yüzeyindeki ince, kırışık katman.