RT Journal Article SR Electronic T1 What We Know and Do Not Know about the Functions of the Orbitofrontal Cortex after 20 Years of Cross-Species Studies JF The Journal of Neuroscience JO J. Neurosci. FD Society for Neuroscience SP 8166 OP 8169 DO 10.1523/JNEUROSCI.1556-07.2007 VO 27 IS 31 A1 Murray, Elisabeth A. A1 O'Doherty, John P. A1 Schoenbaum, Geoffrey YR 2007 UL http://www.jneurosci.org/content/27/31/8166.abstract AB When Pat Goldman-Rakic described the circuitry and function of primate prefrontal cortex in her influential 1987 monograph (Goldman-Rakic, 1987), she included only a few short paragraphs on the orbitofrontal cortex (OFC). That year, there were only nine papers published containing the term “orbitofrontal,” an average of less than one paper per month. Twenty years later, this rate has increased to 32 papers per month. This explosive growth is partly attributable to the remarkable similarities that exist in structure and function across species. These similarities suggest that OFC function can be usefully modeled in nonhuman and even nonprimate species. Here, we review some of these similarities.