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Socio-sexual processing in cortical circuits.

Michael Brecht1, Constanze Lenschow2, Rajnish P Rao3

  • 1Bernstein Center for Computational Neuroscience, Humboldt-Universität zu Berlin, Philippstrasse 13, Haus 6, 10115 Berlin, Germany; NeuroCure Cluster of Excellence, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany.

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Understanding social and sexual information processing in the brain is challenging. New research reveals distinct cortical processing in primary sensory areas and prefrontal cortex, with unique developmental trajectories for sexual circuits.

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Area of Science:

  • Neuroscience
  • Social Neuroscience
  • Cortical Circuits

Background:

  • Investigating how social and sexual information processing maps onto cortical circuits is hampered by a lack of circuit-oriented social neuroscience and data from interacting brains.
  • Previous research indicates social information is differentially processed in primary sensory cortices.
  • Prefrontal areas are implicated in social interaction processing and social hierarchy determination.

Purpose of the Study:

  • To explore the neural underpinnings of social and sexual information processing within cortical circuits.
  • To reconcile anatomical observations of cortical layout with physiological evidence of sex differences in processing.

Main Methods:

  • Review of recent findings in social neuroscience.
  • Analysis of physiological data related to cortical processing.
  • Examination of anatomical data concerning cortical sexual dimorphism.

Main Results:

  • Social information processing begins in primary sensory cortices.
  • Prefrontal cortex plays a role in social interactions and hierarchy.
  • Cortical anatomy may exhibit a bisexual layout, but physiological analysis reveals sex differences in processing.
  • Sexual processing circuits exhibit unique developmental plasticity, including pubertal rewiring and sensitivity to early life stress.

Conclusions:

  • Cortical circuits involved in social and sexual processing are complex and exhibit distinct characteristics.
  • Sexual processing circuits are particularly dynamic, undergoing significant changes during development and being vulnerable to early life experiences.