During sexual interactions, hypothalamic oxytocin neurones are activated in male rats.56 Oxytocin neurones are also activated in female rats under a paced mating condition in which females have the initiative to control sexual interactions.57 Experiments with oxytocin receptor antagonists have shown that endogenous oxytocin attenuates anxiety‐related behaviour in these mating conditions. The gene discussed is OXT; the disease is Anxiety.