Brain Environment Interactions: Stress, Posttraumatic Stress Disorder, and the Need for a Postmortem Brain Collection

Area of Science:

• Neuroscience
• Environmental Psychology
• Psychiatry

Background:

• Extreme environmental stressors, such as traumatic events, profoundly affect neurobiology and behavior.
• Understanding environmental influences on human biology and behavior is critical for public health.
• Environmental stress models offer insights into the mechanisms underlying stress-related disorders.

Purpose of the Study:

• To review evidence of brain alterations resulting from environmental stress exposure.
• To highlight the necessity of histological confirmation for neuroimaging studies.
• To advocate for the establishment of a postmortem brain tissue collection for studying environmental stressor effects.

Main Methods:

• Review of existing neuroimaging studies on environmental stress.
• Discussion of current scientific approaches to brain-environment interactions.
• Proposal for a dedicated brain tissue collection for environmental stress research.

Main Results:

• Neuroimaging studies show significant brain alterations following stress exposure.
• Histological validation is essential to confirm and interpret neuroimaging findings.
• A gap exists in current research regarding direct tissue analysis of stressor effects.

Conclusions:

• Postmortem brain tissue analysis is vital for validating neuroimaging research on environmental stress.
• A specialized brain tissue collection will advance understanding of stress-induced neurobiology.
• This resource can accelerate discoveries in acute stress disorder and posttraumatic stress disorder.