The your last premise is disturbing, denying a newborn sensory input.
It can be overcome. Helen Keller was deprived most sensory input and rose above her "limitations". When children are denied by disability , they can learn, reroute and overcome. It's when an adult is suddenly handicapped that a problem begins because that adult has forgotten how to learn.
Imagine if the human being could continue to learn throughout its life at the rate it learns in the first five years, we'd probably only make it to 30 before absoultely frying but man what a ride...