medium · MCAT psych-soc
A patient with schizophrenia is being treated with a medication that modulates dopamine.
Which of the following best describes the current doctrinal understanding of the dopamine hypothesis in schizophrenia?
- Hyperactivity of dopamine occurring solely within the prefrontal cortex, unrelated to other pathways.
- Dopamine dysregulation, with hyperactivity in mesolimbic and hypoactivity in mesocortical pathways.
- An overall excess of dopamine concentration occurring uniformly throughout the entire brain and all its regions.
- A deficiency of dopamine confined to the substantia nigra, characteristic of Parkinsonism.
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