Most men have a category-specific pattern of genital and subjective sexual arousal,
responding much more strongly to erotic stimuli depicting their preferred sex than to erotic
stimuli depicting their nonpreferred sex. In contrast, women tend to have a less specific
arousal pattern. To better understand this sex difference, we used neuroimaging to explore
its neural correlates. Heterosexual and homosexual women viewed erotic photographs of
either men or women. Evoked neural activity was monitored via fMRI and compared with …