Figure 3.
A, Diagram of representative NAc core and shell injection placements based on the atlas of Paxinos and Watson (2007). Additional rats' injections were identified in similar locations at points between the anterior–posterior levels shown here. B, NAc core, but not shell, injection of GLP-1 reduced food intake. C, Ex9 injected into the NAc core increased feeding. D, Percentage of saccharin out of total saccharin plus water consumed in a 24 h test of CTA. Rats that previously experienced saccharin paired with intra-NAc core saline or GLP-1 strongly preferred to drink saccharin over water, but rats that received a saccharin-LiCl pairing showed aversion to saccharin. *p < 0.05 relative to saline.