Figure 3From: Effects of a selectively bred novelty-seeking phenotype on the motivation to take cocaine in male and female rats The number of infusions self-administered during the 40-minute drug-available sessions using a fixed ratio 5 schedule of reinforcement. $ P < 0.05, significant effect of sex within phenotype for that day. Closed squares, bHR males; closed triangles, bHR females; open squares, bLR males; open triangles, bLR females.Back to article page