PET and MRI show differences in cerebral asymmetry and functional connectivity between homo- and heterosexual subjects

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Cerebral responses to putative pheromones and objects of sexual attraction were recently found to differ between homo- and heterosexual subjects. Although this observation may merely mirror perceptional differences, it raises the intriguing question as to whether certain sexually dimorphic features in the brain may differ between individuals of the same sex but different sexual orientation. We addressed this issue by studying hemispheric asymmetry and functional connectivity, two parameters that in previous publications have shown specific sex differences. Ninety subjects [25 heterosexual men (HeM) and women (HeW), and 20 homosexual men (HoM) and women (HoW)] were investigated with magnetic resonance volumetry of cerebral and cerebellar hemispheres. Fifty of them also participated in PET measurements of cerebral blood flow, used for analyses of functional connections from the right and left amygdalae. HeM and HoW showed a rightward cerebral asymmetry, whereas volumes of the cerebral hemispheres were symmetrical in HoM and HeW. No cerebellar asymmetries were found. Homosexual subjects also showed sex-atypical amygdala connections. In HoM, as in HeW, the connections were more widespread from the left amygdala; in HoW and HeM, on the other hand, from the right amygdala. Furthermore, in HoM and HeW the connections were primarily displayed with the contralateral amygdala and the anterior cingulate, in HeM and HoW with the caudate, putamen, and the prefrontal cortex. The present study shows sex-atypical cerebral asymmetry and functional connections in homosexual subjects. The results cannot be primarily ascribed to learned effects, and they suggest a linkage to neurobiological entities.

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I've suspected this exact thing for a while now.

http://www.youtube.com/watch?v=78WkXFsKX0E
http://www.youtube.com/watch?v=T4PzeZJgFZs

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"The larger the island of knowledge, the longer the
shoreline of wonder" (Ralph W. Sockman)

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thats very long and very scientific.  
what's the gist?

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See bold (or the youtube videos)

Post edited at 4:26 pm on June 16, 2008 by Moridin

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"The larger the island of knowledge, the longer the
shoreline of wonder" (Ralph W. Sockman)

*post edited to remove offensive remark*

Post edited at 11:10 pm on June 21, 2008 by SomeoneLoveMe

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what do i write here, hatesyou

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I've suspected this exact thing for a while now.

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meh.

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I want David Blue.
Right now.

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Quote: from Moridin at 6:18 pm on June 16, 2008

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I've suspected this exact thing for a while now.

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Really? And yet you've said nothing to indicate your 'suspected' diagnosis with which this analysis agrees? How very insecure of you... I hope, for your sake only, that an opposing view is never proven.

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I have. I've made a couple of topics on science and homosexuality in the past.

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"The larger the island of knowledge, the longer the
shoreline of wonder" (Ralph W. Sockman)

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Quote: from Moridin at 6:18 pm on June 16, 2008

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I've suspected this exact thing for a while now.

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Really? And yet you've said nothing to indicate your 'suspected' diagnosis with which this analysis agrees? How very insecure of you... I hope, for your sake only, that an opposing view is never proven.

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Quote: from Forever Angel at 10:11 pm on June 16, 2008

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Quote: from Moridin at 6:18 pm on June 16, 2008

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I've suspected this exact thing for a while now.

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Really? And yet you've said nothing to indicate your 'suspected' diagnosis with which this analysis agrees? How very insecure of you... I hope, for your sake only, that an opposing view is never proven.

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 your answer sounds like the insecure one,

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Then can you please explain to me the biology behind necrophilia, pedophilia, or bestiality?  Are these not legitimate sexual preferences for the individuals involved?

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Nope. More like mental disorders. But we will find a mechanistic explanation to them eventually, but perhaps you think it is a result of demonic possessions?

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"The larger the island of knowledge, the longer the
shoreline of wonder" (Ralph W. Sockman)

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I'm wondering why the this cannot be ascribed to learned effects, and 'hints' at a linkage to neurobiological entities. Not that it is necessarily wrong, but such was noted at the beginning. It's certainly interesting though.

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Because cerebral responses to putative pheromone cannot be a learned effect by definition.

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"The larger the island of knowledge, the longer the
shoreline of wonder" (Ralph W. Sockman)