Carbon dioxide levels in buildings, cognitive performance, physiological responses, and health effects

Xiaojing Zhang*, Asit Mishra, Pawel Wargocki

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearchpeer-review

    Abstract

    We summarized published evidence linking indoor carbon dioxide (CO2) concentrations with cognitive performance, physiological responses, and health effects. We included studies where CO2 was used as a proxy of ventilation, an indicator of emissions from humans (bioeffluents), and an independent exposure factor. Poor ventilation, demonstrated by high indoor CO2, related to increased prevalence of sick building syndrome symptoms (SBS) and decreased cognitive performance. Exposures to both human bioeffluents and pure CO2 could impair cognitive performance at typical indoor levels of CO2≤5, 000 ppm. The effects could occur at different CO2 levels, depending on the type of cognitive task. A clear physiological explanation of the observed effects requires additional research.
    Original languageEnglish
    Title of host publicationProceedings of Indoor Air 2022
    PublisherInternational Society of Indoor Air Quality and Climate
    Publication date2022
    Publication statusPublished - 2022
    Event17th International Conference of the International Society of Indoor Air Quality & Climate - University of Eastern Finland, Kuopio, Finland
    Duration: 12 Jun 202216 Jun 2022
    Conference number: 17
    https://indoorair2022.org/

    Conference

    Conference17th International Conference of the International Society of Indoor Air Quality & Climate
    Number17
    LocationUniversity of Eastern Finland
    Country/TerritoryFinland
    CityKuopio
    Period12/06/202216/06/2022
    Internet address

    Keywords

    • Bioeffluents
    • Carbon dioxide
    • Cognitive performance
    • Health effects
    • Physiological reactions

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