So this means that we
are not attracted to close relatives that are HLA similar?
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.
So this means that we
are not attracted to close relatives that are HLA similar?
Mayhaps for some but incest is a lot more commonSo this means that we are
not attracted to close relatives that are HLA similar?
than most care to admit.
"I'm just a dirty hornytoad" -Gegogi
The attraction/arousal mechanism is dampened byOriginally Posted by Gegogi
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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