It's extremely hard to sleep when it's too light, but do light colors affect your sleep?
Researchers studied the impact of different light colors on the human body and sleep patterns.
Let's see what they've discovered.
How it works
Our vision relies on various wavelengths of light, which are converted into electrical impulses by cells in our eyes.
These impulses are then processed in the brain to create the images we see.
Light also affects our internal clock, which regulates our sleep-wake rhythm.
Specialized cells in our eyes are sensitive to light, especially short-wavelength light.
When these cells are activated by short-wavelength light, they signal that it's daytime.
To investigate the role of light color, the researchers exposed volunteers to blue or yellow light for an hour in the evening, alongside white light for comparison.
They observed changes in the participants' internal clocks, sleep onset, depth, tiredness, and reaction abilities.
The results showed that light color along the blue-yellow dimension had no significant impact on the internal clock or sleep.
What they've found
The researchers concluded that light-sensitive cells have the most influence on our internal clock, with color playing a minor role.
Further research is needed to explore light color effects in different conditions.
Short-wavelength light from screens can disrupt our biological rhythms and sleep, so using night shift mode can be helpful.
However, the yellowish color adjustment is not essential and could be improved.
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