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Full analysis for viewing behaviour in this study is included in the electronic supplementary material. Dilation of the pupils is an indicator of an observer's sexual interest in other people, but it remains unresolved whether this response is strengthened or diminished by sexually explicit material. To address this question, this study compared pupillary responses of heterosexual men and women to naked and dressed portraits of male and female adult film actors. Pupillary responses corresponded with observers' self-reported sexual orientation, such that dilation occurred during the viewing of opposite-sex people, but were comparable for naked and dressed targets. These findings indicate that pupillary responses provide a sex-specific measure, but are not sensitive to sexually explicit content. The presentation of male and female adults elicits dilation in observers' pupils to the people category that matches their sexual interest.
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Sex-specific but not sexually explicit: pupillary responses to dressed and naked adults

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Naked man and woman burst into pensioner's home and start having sex - Mirror Online

The belief that men are more likely to get turned on by sexual images than women may be something of a fantasy, according to a study suggesting brains respond to such images the same way regardless of biological sex. Writing in the Proceedings of the National Academy of Sciences , Noori and his colleagues report how they came to their conclusions by analysing the results of 61 published studies involving adults of different biological sex and sexual orientation. The subjects were shown everyday images of people as well as erotic images while they lay inside a brain-scanning machine. Noori said all participants rated the sexual images as arousing before being scanned. Previously studies based on self-reporting have suggested men are more aroused by images than women, and it has been proposed that these differences could be down to the way the brain processes the stimuli — but studies have returned different results. Now, looking at the whole body of research, Noori and his colleagues say they have found little sign of functional differences.
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Naked man and woman burst into pensioner's home and start having sex

Behold the splendor of the nude male form: sleek and powerful, a miracle of sculpted sinew, striding confidently across the sand or stretching out before you in ever-uncoiling glory. So say scientists at the frontiers of research on the eternal question of what women find erotic, the latest answer to which seems to be: not naked guys, or at least not simply naked guys. Chivers, a research fellow at the Center for Addiction and Mental Health at the University of Toronto, says she has data to support this assertion. She recently published results of a study in which she showed people video clips of naked men and women in various sexual and nonsexual situations and measured their genital arousal. Heterosexual women, Dr.
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