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A neural circuit encoding sexual preference in humans.

Timm B Poeppl1, Berthold Langguth1, Rainer Rupprecht1

  • 1University of Regensburg, Department of Psychiatry and Psychotherapy, Universitaetsstrasse 84, 93053 Regensburg, Germany.

Neuroscience and Biobehavioral Reviews
|June 25, 2016
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Summary
This summary is machine-generated.

This study identified key brain regions controlling sexual preference in humans. Four ancient subcortical structures, including the hypothalamus and thalamus, are crucial for sexual preference.

Keywords:
Activation likelihood estimationBrain imagingMeta-analysisNeuroimagingSexual behaviorSexual preference

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Area of Science:

  • Neuroscience
  • Human Sexuality
  • Neuroimaging

Background:

  • Sexual preference is fundamental for reproduction and species conservation in mammals.
  • Understanding the neurobiological basis of sexual preference is limited, primarily relying on lesion studies.

Purpose of the Study:

  • To identify the specific neural substrates underlying sexual preference using meta-analytic remodeling of neuroimaging data.
  • To investigate the brain regions associated with diverse sexual interests during sexual stimulation.

Main Methods:

  • Meta-analytic remodeling of neuroimaging data.
  • Analysis of data from 364 human subjects with varied sexual interests.
  • Quantification of neural regions involved in sexual preference.

Main Results:

  • Sexual preference is encoded by four evolutionarily old, subcortical brain structures.
  • Key regions include the anterior hypothalamus, preoptic area, anterior and mediodorsal thalamus, septal area, and perirhinal parahippocampus.
  • Sexual non-preference is regulated by the substantia innominata.

Conclusions:

  • Identified a core neural circuit for sexual preferences.
  • This finding serves as a foundation for future research into the neural basis of sexual behavior and its variations.
  • Highlights the role of phylogenetically old brain structures in human sexual preference.