Answer: true
Explanation: the neurotransmitter; dopamine has been implicated as one of the causes of schizophrenia.
The theory known as the dopamine hypothesis suggests that schizophrenia may be caused by excessive activity of the dopamine a dependent neurons in the brain.
This excess activity may be due to increased production or release of the substance at nerve terminals, increased receptor sensitivity, too many dopamine receptors, or a combination of these mechanism