Citation needed. I'm not aware of any studies that highlight differences in brain structure of a "healthy" brain vs. a brain of somebody who has unmedicated first-episode schizophrenia/psychosis.
If somebody took anti-psychotics, especially for a long time, it's known that they affect brain structure and that invalidates any findings that the study has, unless they can account for the changes that the (for example) anti-psychotics produced. Which given our current state of science, and understanding of the brain, is unlikely.
If somebody took anti-psychotics, especially for a long time, it's known that they affect brain structure and that invalidates any findings that the study has, unless they can account for the changes that the (for example) anti-psychotics produced. Which given our current state of science, and understanding of the brain, is unlikely.