Child of the Mind
This is a Creatures 1 and Creatures 2 mutation in either the attention lobe or the concept lobe, and it causes the affected creature to spend their whole lives looking at themselves,since they cannot see outside of themselves they are sometimes also referred to as "blind". They can still learn the words from a computer and kiss-pop, but they generally starve to death. There is no cure or relief for this mutation.
See the "Mutant Norns" section at Muppetboy's Geatville to download example children of the mind for Creatures 1.