For 10 points -- name this neurotransmitter, levels of which are increased in schizophrenia but depleted in Parkinson's disease.
Prominent in ventral tegmental area, the superior colliculus, and the arcuate nucleus, it is released from the hypothalamus and inhibits prolactin secretion. Synthesized from tyrosine, it can be further metabolized into norepinephrine and epinephrine. However, it is better known for its association with a disease that degenerates the substantia nigra. For 10 points -- name this neurotransmitter, levels of which are increased in schizophrenia but depleted in Parkinson's disease.
Prominent in ventral tegmental area, the superior colliculus, and the arcuate nucleus, it is released from the hypothalamus and inhibits prolactin secretion.
dopamine