Figure 2.

Reconstruction of the infusion sites in the shell (top) and core (bottom) of the NAc and estimation of the infusion spread based on infusions of Fluoro-Gold (see Materials and Methods for details). Similar to our earlier studies that involved infusion of compounds into the shell of the NAc (Himmelheber et al., 2000), the fluorophore occupied an asymmetrical space, likely confined in part by structural boundaries (see also Allen et al., 2008). Infusions into the shell were intended to occupy the more rostral half of this subregion (see Materials and Methods; Faure et al., 2010).