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Related Concept Videos

Role of Amygdala in Memory01:16

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The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
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The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
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Updated: Jul 16, 2025

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity
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Gray space and default mode network-amygdala connectivity.

Julia C Harris1, Michael T Liuzzi1, Carlos Cardenas-Iniguez2

  • 1Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI, United States.

Frontiers in Human Neuroscience
|September 15, 2023
PubMed
Summary
This summary is machine-generated.

Exposure to gray space, like concrete and streets, is linked to increased amygdala-default mode network (DMN) connectivity in youth. This finding suggests potential risks for emotion dysregulation and informs public policy on built environments.

Keywords:
amygdaladefault mode networkfMRIgray spaceresting state

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Area of Science:

  • Neuroscience
  • Environmental Health
  • Developmental Psychology

Background:

  • The built environment influences health and can exacerbate disparities.
  • Gray space (e.g., impervious surfaces) exposure is a negative factor linked to urbanicity.
  • Limited research exists on gray space's impact on youth cognitive function.

Purpose of the Study:

  • To investigate the association between gray space and amygdala-default mode network (DMN) connectivity in youth.
  • To explore potential links between the built environment and neural pathways involved in emotional processing.

Main Methods:

  • Utilized data from 10,144 youth in the ABCD Study.
  • Measured gray space using the Child Opportunity Index (COI).
  • Employed linear mixed effects models to analyze gray space and amygdala-DMN connectivity, with sensitivity analyses for race.

Main Results:

  • Greater gray space exposure was significantly associated with increased left amygdala-DMN connectivity (p=0.0001).
  • This association remained significant after controlling for race.
  • No significant correlations were found between amygdala-DMN connectivity and internalizing/externalizing symptoms.

Conclusions:

  • Gray space exposure may be linked to altered neural connectivity, potentially increasing the risk for emotion dysregulation in youth.
  • Neuroimaging findings may indicate early dysregulation not yet apparent in behavioral outcomes.
  • Findings can inform public policy aimed at improving urban living environments.