The researchers observed that TAAR1 was decreased in the region of the brain important for the process of decision - making and executive function (infralimbic cortex) of the experimental models as compared to controls. (sciencedaily.com)
Doherty, J.M., Cooke, B.M., Frantz, K.J. (2013) Attenuated Fos immunoreactivity in prelimbic and infralimbic medial prefrontal cortex during heroin - seeking behavior in adolescent vs. adult male rats. (cbn-atl.org)
Graybiel suspected the rats» habitual behavior was maintained by an area in the front part of the brain known as the infralimbic (IL) cortex, believed to be involved in memory retrieval and habit performance. (discovermagazine.com)