Effects of Exposure to Carbon Dioxide and Human Bioeffluents on Cognitive Performance

Xiaojing Zhang, Pawel Wargocki, Zhiwei Lian

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Abstract

The purpose of this study was to examine whether exposures to CO2 in the range of 500 ppm to 3,000 ppm with and without bioeffluents influence cognitive performance. Twenty-five subjects were exposed in the climate chamber for 255 minutes. Cognitive performance was examined by multiple tasks including proof-reading, addition, subtraction, text typing, neurobehavioral tests, Tsai-Partington task, and d2 attention task. Subjective ratings of comfort and experienced acute health symptoms were collected, physiological responses of subjects were monitored and the saliva samples were collected to analyze stress biomarkers. The results show that during exposure to bioeffluents with CO2 reaching 3,000 ppm speed of addition was significantly reduced, subjects responded significantly quicker in redirection task and completed significantly less correct links in Tsai-partington test, which may imply that arousal ( stress level) was an underlying mechanism. (C) 2015 Published by Elsevier Ltd.
Original languageEnglish
Title of host publicationThe 9th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC) joint with the 3rd International Conference on Building Energy and Environment (COBEE), 12-15 July 2015, Tianjin, China
Number of pages5
Volume121
PublisherElsevier
Publication date2015
Pages138-142
DOIs
Publication statusPublished - 2015
Event3rd International Conference on Building Energy and Environment - Tianjin, China
Duration: 12 Jul 201515 Jul 2015

Conference

Conference3rd International Conference on Building Energy and Environment
CountryChina
CityTianjin
Period12/07/201515/07/2015
SeriesProcedia Engineering
ISSN1877-7058

Bibliographical note

© 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Keywords

  • Carbon Dioxide
  • Human Bioeffluents
  • Cognitive Performance

Cite this

Zhang, X., Wargocki, P., & Lian, Z. (2015). Effects of Exposure to Carbon Dioxide and Human Bioeffluents on Cognitive Performance. In The 9th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC) joint with the 3rd International Conference on Building Energy and Environment (COBEE), 12-15 July 2015, Tianjin, China (Vol. 121, pp. 138-142). Elsevier. Procedia Engineering https://doi.org/10.1016/j.proeng.2015.08.1040