Effects of PVT lesion on the acquisition of (left) goal- and (right) sign-tracking conditioned responses. Mean + SEM of A) number of food cup contacts, B) probability of food cup contact, and C) latency to food cup contact for bLR animals (Lesion, n=12; Sham, n=10). For bHR animals (Lesion, n=9; Sham, n=12), D) number of lever contacts, E) probability of lever contact, and F) latency to lever contact.