A neurologically typical person.
Are you a NeuroTypical? (Many geeks aren't.) Check it out on The Institure for the Study of the Neurologically Typical (which is from an Autistic point of view).

NeuroTypicality is a terrible affliction ;), see this link and the next sentence: GregEganOnNeurotypicalSyndrome. You may also try to understand Neutotypicality from an autie/aspie point of view.

People who assume they are normal can be trouble. They tend to go around changing the world to suit themselves; their standards are "community standards". "I'm normal, so if I like it this way, almost everyone else will. Right? --GlynWebster