 The basal ganglia has been proposed to gate what enters and what doesn't enter working memory.One hypothesis proposes that the direct pathway (Go, or excitatory) allows information into the PFC, where it stays independent of the pathway, however another theory proposes that in order for information to stay in the PFC the direct pathway needs to continue reverberating.The short indirect pathway has been proposed to, in a direct push pull antagonism with the direct pathway, close the gate to the PFC.