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Related Experiment Video

Updated: Nov 28, 2025

Culture of Neurospheres Derived from the Neurogenic Niches in Adult Prairie Voles
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Differences in Diffusion-Weighted Imaging and Resting-State Functional Connectivity Between Two Culturally Distinct

Richard Ortiz1, Jason R Yee2, Praveen P Kulkarni2

  • 1Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas.

Biological Psychiatry. Cognitive Neuroscience and Neuroimaging
|November 26, 2020
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Summary
This summary is machine-generated.

Brain structure differences in prairie voles correlate with prosocial behavior. Prosocial males show distinct gray matter microarchitecture and functional connectivity (FC) compared to less prosocial, more aggressive males.

Keywords:
BOLDBed nucleus of the stria terminalisConnectivityImagingMedial amygdalaPrairie vole

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Area of Science:

  • Neuroscience
  • Behavioral Biology
  • Comparative Psychology

Background:

  • Prairie voles exhibit varying levels of prosocial behavior, with Illinois (IL) males being highly prosocial and Kansas-Illinois (KI) males showing lower prosociality and higher aggression.
  • Behavioral distinctions are linked to hormonal and neuropeptide expression in specific brain regions, including the medial amygdala, bed nucleus of the stria terminalis, and paraventricular nucleus.

Purpose of the Study:

  • To investigate if higher-order brain structure, specifically microarchitecture and functional connectivity (FC), differs between prairie vole populations with distinct prosocial behaviors.
  • To identify neural correlates associated with variations in prosociality and aggression in prairie voles.

Main Methods:

  • Comparison of apparent diffusion coefficient and fractional anisotropy to assess gray matter microarchitecture.
  • Analysis of blood oxygen level-dependent resting-state functional connectivity (FC) between brain regions.
  • Utilized prairie vole populations from Illinois (high prosocial) and a Kansas-Illinois cross (low prosocial, high aggression).

Main Results:

  • IL males showed higher apparent diffusion coefficient in prosocial behavior-associated regions (bed nucleus of the stria terminalis, paraventricular nucleus, anterior thalamic nuclei).
  • KI males exhibited higher fractional anisotropy in the brainstem reticular activating system.
  • IL males demonstrated greater functional connectivity (FC) between key social and reward-related brain regions.

Conclusions:

  • Gray matter microarchitecture and functional connectivity (FC) are implicated in the expression of prosocial behavior.
  • Differences in brain regions, particularly the brainstem, may contribute to behavioral variations.
  • Prairie voles serve as a valuable model for studying emotional differences, stress vulnerability, and addiction.