“…As we relate other research in an attempt to understand the role of the nucleus accumbens and other parts of the striatum (the portions of the brain that have to do with the reward system) may have, it is interesting to note that Pettijean et al (2014) and Secades-Villa et al (2013) had shown that cocaine addicts who do not respond to treatment, even after having suffered from cocaine addiction, show impaired self-awareness of cognitive and motivational processing, which implicates the striatum, OFC, and dorsolateral PFC regions of the brain not the nucleus accumbens. Yet, Porges and Decety (2013) found that while one's assessment of violent stimuli is dependent on their social context and individual characteristics, subjects who observe martial arts video clips recorded activation of the anterior insula (AI), brainstem, ventral tegmental area (VTA), striatum, medial, and lateral prefrontal cortex, orbitofrontal cortex, somatosensory cortex, and supramarginal gyrus.…”