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Sex is all in our heads, quite literally. All images were obtained from Flickr and were published under a Creative Commons license. Patterns of brain activation during visually evoked sexual arousal differ between homosexual and heterosexual men. The difference of means, Cohen's d and p -value were obtained for each variable valence and arousal and each picture in each comparison. Thus, valence and arousal ratings can be treated as parameters guiding the selection of stimuli according to the requirements of a given experimental design. The Supplementary Material for this article can be found online at:
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The journal of sexual medicine , 5 9 , Yet, it remains uncertain whether there is anything unique and exceptional about functional neuroanatomy of sex that would differentiate it from other pleasures Georgiadis and Kringelbach, Still, arousal ratings were shown to depend on picture content, with the main effect of picture category F 3. What is sexual orientation and do women have one? In contrast, women have more similar reactions to both sexes and do not differ between sexual orientations. To test the statistical significance of this category preference, we examined whether the initially defined subsets of the NAPS ERO collection differed significantly in terms of the way the pictures were rated by the members of different groups: Functional neuroanatomy of sexual arousal.
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The subjects invited to rate the images males and females were selected to represent extreme orientation toward either homosexuality or heterosexuality, to best distinguish the stimuli that specifically appeal to the respective groups. Subjects 24 healthy female, heterosexual subjects between 20 and 29 years of age mean In the same manner we should keep our eyes carefully on the point where the devil most often attacks us, where human nature is weakest, where our frailties lie, and here we should keep guard most vigilantly. Recommended articles Citing articles 0. Europe PMC requires Javascript to function effectively. Nine different video clips of each type were presented at a length of 20 sec each, separated by a 20 sec interstimulus interval with a white fixation cross on a black screen. The interaction effect of group and category was also significant F
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The former include the superior and inferior parietal lobes, the lateral occipital cortex, the medial prefrontal cortex, the anterior cingulate cortex, and the insula. This variety of experimental material may have accounted for some of the inconsistencies between the findings in previous studies, as they might have used stimuli of unequal interest to the compared groups. Conversely, the C group showed increased activation in the dorso-lateral prefrontal cortex when compared against the nC group at its mid-follicular phase, but not when compared against the mid-luteal phase. Published by Elsevier Inc. This website uses cookies to improve your experience. Its decreased activation under hormonal contraceptives may therefore indicate a decreased motivation or drive towards sexual activity under these drugs.
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