Diagram of the human brain and rat brain showing the parts of the limbic system in color. These regions of the brain control innate behaviors and, along with input from the ventral tegemental area nucleus accumbens, and cortex, learned and intentional behaviors. The reward circuit involves the ventral tegmental area, amygdala, nucleus accumbens, and cortex. Abbreviations: BNST, bed nucleus of stria terminalis; Hipp, hippocampus; Hypo, hypothalamus; MB, mamillary bodies; PAG, periaqueductal gray; NuAc, nucleus accumbens; VTA, ventral tegmental area; MOB, main olfactory bulbs; AOB, accessory olfactory bulbs (rat only). Credit: K. Sokolowski, J. G. Corbin, Wired for behaviors: from development to function of innate limbic system circuitry. Front. Mol. Neurosci. (26 April 2012) DOI: 10.3389/fnmol.2012.00055
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