L axis is the D1 receptor activation level (which is denoted by in the text). Only the curves numbered 0 correspond to the equilibrium state of the PFC circuit. See the text for the method of drawing of this diagram.<p><b>Copyright information:</b></p><p>Taken from "Dysfunctional GABAergic inhibition in the prefrontal cortex leading to "psychotic" hyperactivation"</p><p>http://www.biomedcentral.com/1471-2202/9/41</p><p>BMC Neuroscience 2008;9():41-41.</p><p>Published online 25 Apr 2008</p><p>PMCID:PMC2387163.</p><p></p