does mesocortical tract originate in the substantia nigra
Substantia nigra is Latin for black substance, reflecting the fact that parts of the substantia nigra appear darker than neighboring areas due to high levels of neuromelanin in dopaminergic neurons.It was discovered in 1784 by Felix FÃ©lix-vicq'D, azyr And Samuel thomas Von soemmerring sÃ¶mmerring alluded to this structure. in 1791he most prominent function of the pars compacta is motor control, though the substantia nigra's role in motor control is indirect; electrical stimulation of the substantia nigra does not result in movement, due to mediation of the striatum in the nigral influence of movement.