FIGURE 3.
Cocaine-induced place-conditioning in Homer1a+/+, Homer1a+/-, and Homer1a-/- mice. When tested in a cocaine-free state, genotypic differences were not observed in the dose-response function for cocaine-induced place-preference exhibited by male and female mice. Occupancy difference = time spent on the cocaine-paired minus -unpaired side in seconds). The data represent the mean ± SEM of the number of mice indicated in parentheses.