Men and women differ in amygdala response to visual sexual stimuli

Stephan Hamann, Rebecca A Herman, Carla L Nolan & Kim Wallen

Nature Neurosci., April 2004 Volume 7 Number 4 pp 411 - 416.

セクシャルな視覚刺激と性別、amygdalaの話

Method:
Thirty-four males were pre-screened: four (12%) were excluded because they reported same-sex desire or experience;
Forty-five females were pre-screened: 16 (36%) were excluded because they reported same-sex desire or experience ...

なんだか割合が多くない？

まとめるとこう言うことらしい。

In summary, the current findings suggest a possible neural basis for the greater role of visual stimuli in human male sexual behavior3-6. Whether the sex differences observed here reflect inherent differences in neural function or stem from differential experience is a matter for further study. (discussionより)

僕的にはdifferential experienceの方が影響が大きいような気がするがどうなんだろう。それとも進化論か何かで説明つくのかな？ヒト雄はエッチなほうが子孫を残しやすいとか何とか。