Mating-relevant olfactory stimuli activate the rat brain in an age-dependent manner.

Chemosensory stimulation is vital for the expression of rodent sexual behavior. As sexual activity decreases with aging, this study investigated whether aging also impacts the integration of sex-relevant chemosensory cues. To this end, several measures were obtained from adult (10-12 months) and aged (30-36 months) male rats after exposure to a conspecific estrous female.