On an Inquiry of Prison Systems

The field of neurology is quite new, and it has brought some astounding discoveries.
We now know that a person's self control/will power is largely determined by his/her prefrontal cortex.

"Weak interconnections between the prefrontal cortex and the rest of the brain have also been observed in criminals, sociopaths, drug addicts, and schizophrenics."

A quick story to illustrate:
The perfect 4.0 GPA valedictorian at "X" University one day goes on a shooting spree and kills 6 people. An MRI reveals a tumor in the prefrontal cortex. What do we do?

Can we punish someone born with (or who involuntarily acquired) a "disability"? Maybe prisons should just be medical facilities?...

We all know about the horror that occurs in many prison systems. Is that really the way to treat someone who possibly belongs in a hospital?

All this begs the question: Are you at fault for your biological nature (even childhood nurture)?

But suppose then that the weak prefrontal cortex in criminals is due to a refusal to exercise control, and not an involuntary disability; what then?

It seems to be a paradox/self referential problem that will ultimately lead to the denial of free-will . If we believe in plasticity and the ability to willfully change, that would imply that 'you' do control your brain, and not the other way around - but how would that be possible if the nature of our brains control us? As that clearly implies that there is no free will...

So it's like you can't have it both ways, either:
A) the nature of our brains do not control us and plasticity allows us to change willfully.
B) the nature of our brains do control us and the only way we change our brains is by self-correcting mechanisms already in place in the brain, and not from willful change...

So who controls who? Am I my brain? Or something more?
The answer to these questions will provide us with knowledge on whether prison systems are a legitimate moral institution.The advent of neurobiology may be the death-blow to the current prison system. On the other hand, it is entirely possible that neuroscience will just reaffirm age-old beliefs on human nature. We will just have to wait and see...

Though regardless of what neuroscience will tell us, something must change in the prison system. According to the Florida Department of Corrections, it costs $55.09/day (about $20,108/year) to keep an inmate incarcerated. Though a medical facility may be more expensive, if the inmate is 'cured' (for lack of a better term) they can be incorporated into American society and contribute to the economy, not just suck money out of it.

I understand there are already makeshift medical facilities in prisons, but they do not work.
"650,000 people are released from the nation’s prisons every year... Two-thirds of those who come out of prison are rearrested within three years of release."

Reform is needed. It is not only the right the to do, but it will help make society safer and make our economy grow stronger.

We live in the 21st century. It is time for the prison system to catch up.