here are a few recent papers. I hope this helps.
Relation of Prefrontal Cortex Dysfunction to Working Memory and Symptoms in Schizophrenia : http://dx.doi.org/10.1176/appi.ajp.158.7.1105
Prefrontal Cortical Gamma-Aminobutyric Acid Transmission and Cognitive Function: Drawing Links to Schizophrenia from Preclinical Research
http://www.sciencedirect.com/science/article/pii/S0006322314007069
I doubt that you will find any study seriously considering that the brain changes in schizophrenia are secondary to the symptoms. Unless it can be established that the brain changes are developmentally primary, which I think is quite unlikely to be the case, the enormous amount of neuroscientific work in this area is likely to be clinically irrelevant.
I agree with Anthony. Acute schizophrenia is very rare primary cerebral disorders.
Globally, research has shown that schizophenics have less dopamine in the frontal lobes and that these are underactivated.while the parietal region are overreactive. However the frontal lobes express imbalances from other regions of the brain. This explains why seeing the brain as an autoregulated system helps. We then realize that the source of the problem might be upstream so to speak as I discuss in the chapter ''schizophrenia and identity'' in the book Isis Code. The age of onset of the illness is also reveiling. Hope that helps. .
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