Which of the following aspects is NOT a trait of schizophrenia according to neuroimaging studies?

In neuroimaging studies of schizophrenia, one commonly observed feature is the increased size of the lateral ventricles. This enlargement is often associated with the overall neuroanatomical changes and has been consistently reported in individuals diagnosed with schizophrenia.

Another trait frequently identified is a decrease in the size of the thalamus and overall brain volume, as many studies demonstrate reductions in overall brain mass among affected individuals. This is indicative of neurodevelopmental disruptions associated with the disorder.

In contrast, increased metabolic activity in the frontal lobes is not a recognized trait of schizophrenia. In fact, many studies indicate that individuals with schizophrenia often exhibit decreased metabolic activity and functioning in the frontal lobe regions, contributing to cognitive deficits and impaired executive functioning commonly seen in the disorder. Thus, this aspect of increased frontal lobe activity does not align with the neuroimaging findings associated with schizophrenia and is why it is the correct answer to the question.