Construction Research Congress 2020
Influence of Critical Variables on Prefrontal Cortex Activity in Hazard Search
Publication: Construction Research Congress 2020: Safety, Workforce, and Education
ABSTRACT
The prefrontal cortex is considered to play an important role in the safety inspection. Little, yet, is known about individuals’ brain activity and its related factors during the hazard search process. This research aims to explore the influence of related variables on the prefrontal cortex activity. Forty-seven participants performed the hazard search task in a civil engineering laboratory presenting the common construction safety hazards, including fall, strike-by, fire protection, and poor housekeeping. A wearable near-infrared spectroscopy (NIRS) system was used to measure their hemodynamic responses in the prefrontal cortex. Site familiarity, safety knowledge, and risk tolerance were investigated as predictors of the oxygenated hemoglobin responses in the prefrontal cortex through hierarchical regression modeling. We found that the explanatory variables distinguished significantly (p<0.05) the concentration changes of oxygenated hemoglobin (ΔO2Hb) in the medial prefrontal cortex during hazard search. Site familiarity accounted for 16.6% of the variance of ΔO2Hb in the medial prefrontal cortex and made the largest contribution to it. The findings lay a foundation for further exploring individuals’ brain activity during hazard recognition and finding out the associate influence variables. That will serve safety managers’ purpose of figuring out effective measures for improving the employees’ safety inspection performance.
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Information & Authors
Information
Published In
Construction Research Congress 2020: Safety, Workforce, and Education
Pages: 250 - 257
Editors: Mounir El Asmar, Ph.D., Arizona State University, David Grau, Ph.D., Arizona State University, and Pingbo Tang, Ph.D., Arizona State University
ISBN (Online): 978-0-7844-8287-2
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: Nov 9, 2020
Published in print: Nov 9, 2020
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