Which dopaminergic tract projects from the ventral tegmental area to the frontal cortex, cingulate, and prefrontal gyrus, and is associated with negative symptoms of psychosis when hypoactive?

• A. mesolimbic tract
• B. mesocortical tract
• C. tuberoinfundibular tract
• D. norepinephrine

Answer: (B)

The main concept is mapping dopaminergic pathways to their cortical targets and clinical effects. The pathway that starts in the ventral tegmental area and projects to the frontal cortex, cingulate, and prefrontal gyrus is the mesocortical tract. When this tract is hypoactive, especially to the prefrontal regions, it is associated with negative symptoms of psychosis such as reduced motivation, diminished affect, and social withdrawal. This is distinct from the mesolimbic tract, which goes to limbic areas like the nucleus accumbens and is more linked to positive symptoms when overactive. The tuberoinfundibular tract runs from the hypothalamus to the pituitary to regulate prolactin, and the norepinephrine system is a separate neurotransmitter system, not the dopaminergic cortical projection described here.