Bisexual brains have their own characteristics

The human brain contains many characteristics related to the behavioral patterns of different types of people. In a way, the way the neurons in our brain are activated and communicate with each other reflects the propensities and tendencies that are embodied in the way we act. And yes, that it is also encountered in the case of different sexual orientations.

Thus, the brains of heterosexual and homosexual people show differences in their functioning in certain contexts, for example.

however, the brains of bisexual people (They feel attracted to men and women, but not necessarily with the same frequency or intensity) do not show a mixture of the activation patterns of the other two, as one might think. According to recent research, the results were published in the journal Nature, bisexuality is associated with its own neurobiological characteristics which are qualitatively different from those of homosexuals and heterosexuals.

    The brain in bisexuality

    The study in question, conducted by psychologists and psychiatrists at Northwestern University and the University of Magdeburg, showed that the brains of bisexual people exhibit certain characteristics in their functioning which, under certain conditions, allows them to be distinguished from the rest of the population..

    This difference, however, should not be highlighted in any situation, such as sleeping or solving a math problem. In the context in which its existence has been verified, it is in the perception of sexually charged images. This is important because a difference in the brain’s activation patterns shows that it is physically different to others. In neuroscience, there is no distinction between software and hardware: the way in which the different parts of the brain are “lit” shows us how the neural networks of which they are made are woven together.

    How was the research conducted?

    Almost 80 people were involved in this research: 28 bisexuals, 26 heterosexuals and 28 homosexuals. All of these individuals were between 25 and 50 years old and were of different ethnicities and origins, so the sample collected different cultural variables. In addition, in the case of bisexual people, it was mandatory to have had at least one lover of each sex.

    On the other hand, the sexual orientation of each person was recorded from a questionnaire based on the Kinsey scale, which established a scale ranging from exclusively homosexual to exclusively heterosexual with some intermediate degrees.

    From this point, each of the participants watched a series of videos with adult content in which both heterosexual and homosexual sex scenes appeared. During this phase, the researchers followed the participants’ brain activation patterns using magnetic resonance imaging.

      The most activated parts of the brain in bisexual people

      The research results showed a curious pattern of neuronal activation that depended on the sexual orientation of each participant. Specifically, the ignition patterns of a part of the brain linked to the basal ganglia called striate nucleus, especially its lower or ventral part. This area of ​​the striated nucleus is linked to mental motivational and pleasure-seeking processes, so it also plays an important role in the experience of sexuality.

      As expected, this area responded by showing a preference for images in which the opposite sex appeared, in heterosexuals, and in same-sex people, in the case of homosexual people. In the case of bisexuals, however, this area of ​​the brain (and incidentally, a few others) behaved as if the differentiation between the category “man” and “woman” was not important; Somehow the line between these two concepts was blurred, in the same way that little importance can be placed on the color of other people’s eyes.

      Of course, reactions of pure bisexuality, understood as a reaction in which there is no clear preference for men or women, were rare. Judging by the images obtained from brain scans, usually the activation of the brain regions of bisexuals they showed a tendency to find one of the two sexes more attractive.

        Leave a Comment