Khaberni - A comprehensive review has shown that nature changes the way the brain works in ways we can measure with modern scientific tools.
The review, involving researchers from Adolfo Ibáñez University in Chile and Imperial College London in the UK, included 108 precise neuroimaging studies, and found a clear pattern: even just viewing images of nature can reduce stress, improve attention, and regulate emotions.
Nature quickly calms the mind
In our daily lives, the brain remains in a constant state of alert due to noise, traffic, screens, and continuous decision-making. This fuels stress and strains attention. Nature, in contrast, offers a completely different environment.
Electroencephalogram (EEG) studies have shown that natural environments increase alpha and theta waves, associated with calm alertness, while reducing beta waves linked to mental effort. In short, the brain becomes less fatigued without losing its activity and shifts to a state of vigilant calm. Even contemplating the movement of leaves or the sound of flowing water stimulates the mind in a different way than daily noise.
These effects are noted quickly: sometimes within a few minutes, and often become stronger about 15 minutes after exposure to an immersive natural scene.
Reduction of emotional stress
Functional magnetic resonance imaging (fMRI) studies show that brain regions responsible for stress, like the amygdala, become less active after exposure to nature. Activities in areas associated with repetitive negative thinking also decrease. Even the neural networks responsible for attention and self-reflection are reorganized in a way that supports the mind's calm and focus, instead of distraction and mind wandering.
Nature eases brain function
Natural environments are generally easier on the brain to process: their shapes and rhythms follow regular patterns, such as sea waves or leaves, reducing the mental and sensory load. As a result, the body and mind begin to relax, stress decreases, concentration becomes less effortful, and emotions become more stable.
Long-term effects of nature
Some studies suggest that living in green areas may be associated with long-term changes in brain structure, such as increased grey matter volume and improved integrity of white matter. These studies are correlational, but they hint that regular exposure to nature over months and years can enhance cognition and adaptability.
