Knockdown of Lmo4 in the NAc does not affect conditioned reinforcement. A, Mice injected with shCon (n = 12) or shLmo4 (n = 10) made more head entries into the reward port during the CS than during the ITI; shLmo4-injected mice made more head entries than shCon-injected mice only on day 5 (*p = 0.0146, Bonferroni test). B, During goal tracking sessions, shCon- and shLmo4-injected mice made more head entries during the presentation of the cue than during the ITI. C, During conditioned reinforcement, both groups made more active than inactive nosepokes. D, Left, GFP staining indicating viral infection in the BLA. Right, Serial reconstruction of microinjection sites.