- Blue light from the sun is vital in regulating a person’s sleep-wake cycle.
- New research suggests that blue light does not affect a person’s “internal clock.”
- The findings further our understanding of the effects of light on sleep quality and duration.
- Previous studies have shown that blue light from devices can damage the eyes and negatively impact sleep.
Of the seven colors in the visible light spectrum,
The majority of light coming from the sun is blue light, making it vital in helping to regulate a person’s sleep-wake cycle.
However, blue light is also the type of light emitted by computer screens, smartphones, tablets, and LED televisions.
Previous research shows that too much exposure to blue light from technology devices can potentially
Now, a new study by researchers at the University of Basel in Switzerland suggests that blue light may not affect a person’s “
The study was recently published in the journal
The other two photoreceptors in the eye — rods and cones — convert light coming into the eye into electrical signals relayed to the brain, providing vision.
First study author Dr. Christine Blume, a psychologist at the Centre for Chronobiology of the University of Basel in Switzerland, explained to Medical News Today:
“In humans, the main effect of light on the internal clock and sleep is mediated via specialized light-sensitive ganglion cells in the retina, which are maximally responsive to short-wavelength light around 490 nanometres. This was well-established even before our study. However, there was reason to believe that the color of light, which is encoded by the cones, could also be relevant for the internal clock, because also…
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