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Intense illumination in the morning hours improved mood and alertness but not mental performance
Bright morning light improves mood and alertness but not thinking skills
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Abstract
Intense morning illumination was tested in 33 healthy individuals and negatively impacted sustained attention performance.
- Exposure to bright light may improve subjective alertness and mood.
- Contrarily, bright light could hinder performance on tasks requiring sustained attention.
- Bright light exposure had no significant effect on serum melatonin levels.
- Adequate lighting should consider both visual and non-visual demands.
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