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The effect of blue light on cognitive function at workplaces: A systematic review
Soheyla Ahmadi Charkhabi1, Zahra Sharifi1, Raziyeh Janizadeh2
1Student Research Committee, Department of Ergonomics, Faculty of Health, Shiraz University of Medical Sciences, Shiraz, Iran.
Physiology & Behavior
|November 29, 2024
Summary
Blue light exposure in workplaces can boost attention and reaction times, but its effects on memory and sleep vary. Further research is needed to understand long-term cognitive impacts.
Area of Science:
- Occupational Health
- Cognitive Neuroscience
- Lighting Technology
Background:
- Modern workplaces increasingly utilize artificial lighting, leading to heightened blue light exposure.
- Blue light, characterized by short wavelengths and high energy, has demonstrated varied effects on cognitive functions and overall well-being.
Approach:
- A systematic review adhering to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.
- Searched PubMed, Web of Science, and Scopus databases with predefined criteria.
- Data extraction and validation performed by multiple authors, with quality assessed using Joanna Briggs Institute (JBI) criteria.
Key Points:
- 29 out of 63 initial articles met inclusion criteria.
- High color temperature and intensity blue light positively impacts attention, alertness, and reaction time.
- Effects on memory and sleep are inconsistent; workplace performance improvements noted, though some studies show mixed results.
Conclusions:
- Blue light shows promise for enhancing workplace attention and reaction times.
- Variability in outcomes necessitates standardized lighting interventions.
- Further investigation into the long-term cognitive effects of blue light is recommended.
Keywords:
AlertnessBlue lightCognitive performanceCorrelated color temperature (CCT)SleepWorkplace lightingMore Related Videos
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