The ventral tegmental area (VTA) in the midbrain, houses cells that make and distribute dopamine, the brain chemical associated with feelings of elation (e.g., core feelings of romantic love). (Fisher, Helen, PhD. Why We Love. p 69-80. NY:vHenry Holt and Company, 2004.)

The ventral tegmental area (VTA) in humans and other primate brains lacks clear borders that separate it from adjacent regions, and can be difficult to distinguish from the substantia nigra (SN) and surrounding nuclei. Source.

The ventral tegmental area (VTA) in the midbrain, like the substantia nigra (SN), is populated with dopaminergic neurons. (Alcaro, A., and Huber R. Huber and J. Panksepp. Behavioral functions of the mesolimbic dopaminergic system: An affective neuroethological perspective. Brain Research Reviews. 2007 Dec;56(2):283-321.)

The substantia nigra is a brain structure located in the midbrain that plays an important role in reward, addiction, and movement. Latin for black substance, parts of the substantia nigra appear darker than neighboring areas due to high levels of melanin in dopaminergic neurons. Parkinson’s disease is caused by the death of dopaminergic neurons in the substantia nigra. Symptoms appear when 50-80% of dopaminergic neurons in the pars compacta of the substantia nigra have died. Source.

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