rusty_shackleford
Arcane
- Joined
- Jan 14, 2018
- Messages
- 50,754
Probably because it mirrors reality.Yes, all the males being gay/bisexual is anathema, but all the women being like that is a-okay.
Recent work supports the idea that the brains of men and women respond differently to sexual stimuli contingent upon the content of the stimuli. There are sex differences in neural activation between men and women depending upon the sex of the actor in the stimuli
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While in the fMRI scanner, subjects viewed still photographs depicting male nudes, female nudes, a neutral condition, or fixation, presented in a block design. Activation to sexual stimuli was compared to activation during the neutral condition. Greater activation to opposite sex stimuli compared to same sex stimuli was seen in men in the inferior temporal and occipital lobes. Women did not show any areas of increased activation to opposite sex compared to same sex stimuli. Men showed more differential activation of brain areas related to sexual arousal than women, including the amygdala, hippocampus, basal ganglia, and some areas of the prefrontal cortex. Women did not show these differences, suggesting that women do not emotionally discriminate between opposite sex and same sex stimuli in the manner that men do. Women only showed increased activation to same sex compared to opposite sex stimuli in visual cortical areas.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2739403/
Eighteen heterosexual women and 18 heterosexual men viewed seven sexual film stimuli, six human films and one nonhuman primate film, while measurements of genital and subjective sexual arousal were recorded. Women showed small increases in genital arousal to the nonhuman stimulus and large increases in genital arousal to both human male and female stimuli. Men did not show any genital arousal to the nonhuman stimulus and demonstrated a category-specific pattern of arousal to the human stimuli that corresponded to their stated sexual orientation. These results suggest that stimulus features necessary to evoke genital arousal are much less specific in women than in men.
https://www.ncbi.nlm.nih.gov/pubmed/16168255/
Another set of tests, comparing male vs. female stimuli within each group, revealed that neither bisexual nor heterosexual women were significantly biased toward stimuli depicting males or stimuli depicting females.
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For heterosexual women viewing erotic pictures, activity was greater for female relative to male stimuli bilaterally in lateral occipital cortices, likely indicative of visual attention as well as in right-lateralized fusiform cortex, potentially suggesting face or body processingIn no brain areas did heterosexual women have significantly greater activation for male relative to female erotic pictures. Rather, they seemed to have a somewhat gynephilic pattern of visual attention, consistent with results from eye-tracking and looking-time studies in which heterosexual women attended to erotic characteristics of female pictures
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5766543/