Male Rats That Differ in Novelty Exploration Demonstrate Distinct Patterns of Sexual Behavior

摘要: High versus low novelty exploration predicts a variety of behavioral differences. For example, rats selectively-bred for high (bred Responders, bHR) exhibit exaggerated aggression, impulsivity, and proclivity to addictive behaviors compared novelty-reactive Low bLRs), which are characterized by anxiety/depressive-like phenotype. Since bHR/bLR differences in dopaminergic circuitry differential response rewarding stimuli (i.e., psychostimulants, food), the present study examined whether they also differ another key hedonic behavior – sex. Thus, adult males were given five 30-min opportunities engage sexual activity with receptive female. Sexual motivation between groups. The phenotype affected both behavior, bLR demonstrating reduced sex bHR fewer animals copulated, longer latency sex). required more intromissions at faster pace per ejaculation than did males. neurobiological that affect drugs abuse, impulsivity performance.