Nature's Impact on the Amygdala

Environmental Psychology and Neuroscience

• Nature's Wellness Benefits: Research consistently shows spending time in nature boosts mood, improves personal wellness, and benefits well-being across all age groups (children, adolescents, older adults, college students).
• Nature and Anxiety: "Green time" mitigates anxiety linked to excessive screen time; even virtual nature experiences can enhance well-being and reduce stress.

Nature's Effect on the Brain: Amygdalae

• Study Question: How does time in nature affect brain structures, specifically the amygdalae?
• Methodology (Sudimac & others, 2022):
  • Participants performed social stress tasks while fMRI assessed amygdala activation (baseline).
  • Independent Variable: One-hour walk in either an urban setting or a forest (randomized assignment).
  • Participants repeated social stress tasks with fMRI after the walk.
  • Dependent Measure: Amygdala activation after the walk, compared to baseline and the other group.
• Key Findings:
  • Individuals who walked for one hour in a forest showed lower amygdala activation compared to their own baseline and to those who had an urban walk.
  • The urban walk did not affect amygdala activation.
  • Conclusion: One hour walking in nature is restorative for the amygdala, reducing its activation.