During development? Sure, but your brain becomes pretty rigid in structure at around 25-26.
A lot of people's brain chemistry is going to be permanently altered by the society they're in - a society in which, due to AI, nothing can be fully trusted. Though, in my opinion, this won't affect most people on a neurological level (but would still touch their psychology).
It's like warfare, most veterans are scarred by it but not all veterans have PTSD. People react in different ways to the same stimuli.
Of course, I'm not a professional so :blobcatderpy: