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Related Concept Videos

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Sociodemographic disparities in corticolimbic structures.

Danielle Shaked1,2, Zachary B Millman1, Danielle L Beatty Moody1

  • 1Department of Psychology, University of Maryland, Baltimore County, Baltimore, Maryland, United States of America.

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Socioeconomic status and race impact brain structure, influencing health disparities. Higher socioeconomic status Whites showed larger volumes in key brain regions, potentially linked to chronic stress effects.

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Area of Science:

  • Neuroscience
  • Sociology
  • Public Health

Background:

  • Socioeconomic status (SES) and race are linked to health disparities.
  • Corticolimbic brain regions are crucial for stress response and health outcomes.
  • Understanding the interplay of SES, race, and brain structure is vital for addressing health inequities.

Purpose of the Study:

  • To investigate the interactive effects of socioeconomic status and race on corticolimbic brain volumes.
  • To explore how these brain differences may mediate the relationship between SES, race, and adverse health outcomes.

Main Methods:

  • Utilized T1-weighted MP-RAGE MRI scans from 200 adult participants (African American and White).
  • Analyzed brain volumes of medial prefrontal cortex, orbital prefrontal cortex, anterior cingulate cortex, hippocampus, and amygdala.
  • Examined socioeconomic status by race interactions and main effects of SES and race on brain structure.

Main Results:

  • Significant SES by race interactions found in medial prefrontal cortex, orbital prefrontal cortex, and anterior cingulate cortex, with higher SES Whites exhibiting larger volumes.
  • Higher SES was associated with larger hippocampal and amygdalar volumes.
  • White individuals had larger hippocampal, orbital prefrontal cortex, and anterior cingulate cortex volumes compared to African Americans.

Conclusions:

  • SES and race interact to influence corticolimbic brain volumes.
  • These structural differences may be influenced by chronic stress associated with lower SES and African American race.
  • Findings suggest a potential neurobiological pathway explaining race- and SES-related health disparities.