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  1. #1
    Banned User jvkohl's Avatar
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    Default Psychoneuroimmunlogical correlates

    visit-red-300x50PNG
    This

    is about as technical as it gets. Simply put, it's more support for the concept of pheromones and their affect on

    sexual orientation.



    http://www.journals.royalsoc.ac.uk/(kkigp445vq5ox

    z2vlyy0ej55)/app/home/contribution.asp?referrer=parent&backto=issue,14,1 8;journal,2,215;linkingpublicationresults,1:

    102024,1


    Abstract:

    Studies on subjective body odour ratings suggest that humans exhibit preferences

    for human leucocyte antigen (HLA)-dissimilar persons. However, with regard to the extreme polymorphism of the HLA

    gene loci, the behavioural impact of the proposed HLA-related attracting signals seems to be minimal. Furthermore,

    the role of HLA-related chemosignals in same- and opposite-sex relations in humans has not been specified so far.

    Here, we investigate subjective preferences and brain evoked responses to body odours in males and females as a

    function of HLA similarity between odour donor and smeller. We show that pre-attentive processing of body odours of

    HLA-similar donors is faster and that late evaluative processing of these chemosignals activates more neuronal

    resources than the processing of body odours of HLA-dissimilar donors. In same-sex smelling conditions,

    HLA-associated brain responses show a different local distribution in male (frontal) and female subjects (parietal).

    The electrophysiological results are supported by significant correlations between the odour ratings and the

    amplitudes of the brain potentials. We conclude that odours of HLA-similar persons function as important social

    warning signals in inter- and intrasexual human relations. Such HLA-related chemosignals may contribute to female

    and male mate choice as well as to male competitive behaviour.

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    Default

    So this means that we

    are not attracted to close relatives that are HLA similar?

  3. #3
    Kodachrome Forever! Gegogi's Avatar
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    Default

    So this means that we are

    not attracted to close relatives that are HLA similar?
    Mayhaps for some but incest is a lot more common

    than most care to admit.
    "I'm just a dirty hornytoad" -Gegogi

  4. #4
    Banned User jvkohl's Avatar
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    Default

    Quote Originally Posted by Gegogi
    Mayhaps for some but

    incest is a lot more common than most care to admit.
    The attraction/arousal mechanism is dampened by

    genetic similarity in most cases. Some studies (e.g., in the Israeli Kibbutz) suggest that mutual familiarity with

    the natural body odor of children who are raised together is preventative for sexual arousal. Other aspects of this

    phenomenon were discussed in my book.

    JVK

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