One might hypothesize that arousal patterns of bisexual women should be similar to the non-specific arousal patterns of heterosexual women however, studies of women’s arousal patterns have mostly neglected to include bisexual women. Women’s less specific arousal patterns may also contribute to their increased “sexual fluidity” 10, which Diamond has defined as an individual’s “capacity for situation-dependent flexibility in sexual responsiveness, which allows individuals to experience changes in same-sex or other-sex desire across both short-term and long-term time periods” 11, 12. The fact that women’s sexual arousal patterns are less category-specific than men’s has been interpreted as a potential contributor to gender differences in “erotic plasticity” 9, which Baumeister has defined as “the extent to which sex drive is shaped by social, cultural, and situational factors.”īaumeister offered three lines of evidence when he initially proposed that women may have greater erotic plasticity compared with men: (1) women show larger effects of social and cultural factors on sexual attitudes, desire, and behavior (2) sexual attitude-behavior consistency is lower in women than in men (3) individual women exhibit more variation in sexual behavior across time than men. Notably, homosexual women’s arousal patterns are more category-specific than heterosexual women’s, although less so than men’s 8.
![video sexo gay con heterosexual video sexo gay con heterosexual](https://assets.ozy.com/ozy-prod/2019/08/gettyimages518145620.jpg)
This pattern has also been found using less direct measures such as looking time 5, pupil dilation 6, and fMRI 7. This has been repeatedly demonstrated with vaginal photoplethysmography 3, 4. For example, heterosexual women have generally shown equivalent arousal to both erotic stimuli featuring men and erotic stimuli featuring women. That is, in contrast to men, women tend to show similar degrees of arousal to erotic stimuli depicting either sex. Studies using physiological measures have found that women tend to have non-specific patterns of genital arousal 1, 2, 3. Bisexual women tended to show more mixed patterns, with activations more responsive to female stimuli in sensory processing areas, and activations more responsive to male stimuli in areas associated with social cognition.
![video sexo gay con heterosexual video sexo gay con heterosexual](https://gcs.pornsitemanager.com/store/c/2/4/60252ede11eb24082f60542c/hd/police-cover.jpg)
These patterns were also suggested by whole brain analyses, with homosexual women showing category-specific activations of greater extents in visual and auditory processing areas. We found that homosexual women’s subjective and neural responses reflected greater bias towards female stimuli, compared with bisexual and heterosexual women, whose responses did not significantly differ.
![video sexo gay con heterosexual video sexo gay con heterosexual](https://di.phncdn.com/videos/201804/27/163764081/original/(m=eGNdHgaaaa)(mh=tt4rzwAniQp_ciR9)9.jpg)
We focused on the ventral striatum, an area of the brain associated with desire, extending previous findings from the sexual psychophysiology literature in which homosexual women had greater category specificity (relative to heterosexual and bisexual women) in their responses to male and female erotic stimuli. We used fMRI to investigate neural correlates of responses to erotic pictures and videos in heterosexual (N = 26), bisexual (N = 26), and homosexual (N = 24) women, ages 25–50.