Final answer:
The statement that dopamine, norepinephrine, and serotonin share overlapping cortical pathways is true as they all contribute to and interact within the brain's cognitive and affective processes.
Step-by-step explanation:
The question revolves around the neurobiological pathways of three important neurotransmitters: dopamine, norepinephrine, and serotonin. The statement that these neurotransmitters share overlapping cortical pathways is indeed true. All three play crucial roles in the affective and cognitive functions of the brain and are interconnected within the cortical and subcortical structures. Dopamine neurons, concentrated in areas such as the substantia nigra and ventral tegmental area, are primarily involved in cognition, affective and behavioral disorders, and have extensive projections including the mesocorticolimbic pathways. Serotonin neurons from the midline raphe nuclei also have extensive brain projections, affecting various areas and functions including mood and cognition. There is substantial interaction between the serotonergic and dopaminergic systems as well, demonstrating their overlap and influence on one another.