I have read of cases of infants being born with less than a full brain, however.
And, by the way, have you even bothered to look at the videos of Terri which are on several places on the Internet in addition to http://www.terrisfight.org ? She definitely is aware and responds to people and things in her environment, even if she is brain-damaged.
Brain-damaged? Yes. Lacking a cerebral cortex? I don't freakin' think so.
PBmaltzman - give it up - he won't answer your questions. All he'll do is just copy and paste the same thing he posted before. Nothing more, nothing less. THIS poster is hopeless.