Evolving norms: social media data analysis on parks and greenspaces perception changes before and after the COVID 19 pandemic using a machine learning approach.

18 found that busy urban scenes induced a hemodynamic response associated with stress and anxiety, while urban greenspaces caused a significant and marginally significant decrease in average oxyhemoglobin (Oxy-Hb) in the visual cortex, suggesting green scenes can be an important factor to offset the negative neuropsychological impact during and post the pandemic.

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