Objective measurement of mental workload that affects productivity in moderately hot environment

Naoe Nishihara, Shinichi Tanabe, Masaoki Haneda, Satoshi Uchida, Gen Kawaguchi, Yuri Akiyama

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    A subjective experiment was conducted to provide the evidences regarding the mechanism of the effect of indoor environmental quality on productivity by objective evaluation approach. The climate chamber was conditioned at the operative temperatures of 25.5, 28.5 or 31.5° C to examine the relationships among indoor thermal environment, performance and mental workload. The change rate of total hemoglobin concentration (ΔtotalHb) was measured on the left forehead by near infrared spectroscopy as an index of mental workload. Triple-digit multiplication task was assigned at two levels of working speed; maximum and normal pace, to manipulate mental workload. The Δtotal Hb at maximum pace was higher than that at normal pace at both 28.5° C and 31.5° C. The difference of ΔtotalHb between maximum and normal pace were significantly higher at 31.5° C than that at 25.5° C and tended to be higher at 28.5° C than that at 25.5° C. The results suggested that the mental workload level to maintain their task performance with maximum effort was higher in hotter environment.

    Original languageEnglish
    Title of host publication9th International Conference and Exhibition - Healthy Buildings 2009, HB 2009
    Publication statusPublished - 2009
    Event9th International Healthy Buildings Conference and Exhibition, HB 2009 - Syracuse, NY
    Duration: 2009 Sep 132009 Sep 17

    Other

    Other9th International Healthy Buildings Conference and Exhibition, HB 2009
    CitySyracuse, NY
    Period09/9/1309/9/17

    Fingerprint

    Hemoglobin
    Productivity
    Near infrared spectroscopy
    Experiments
    Temperature
    Hot Temperature

    Keywords

    • Cerebral blood flow
    • Mental workload
    • Performance
    • Productivity
    • Thermal environment

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction

    Cite this

    Nishihara, N., Tanabe, S., Haneda, M., Uchida, S., Kawaguchi, G., & Akiyama, Y. (2009). Objective measurement of mental workload that affects productivity in moderately hot environment. In 9th International Conference and Exhibition - Healthy Buildings 2009, HB 2009

    Objective measurement of mental workload that affects productivity in moderately hot environment. / Nishihara, Naoe; Tanabe, Shinichi; Haneda, Masaoki; Uchida, Satoshi; Kawaguchi, Gen; Akiyama, Yuri.

    9th International Conference and Exhibition - Healthy Buildings 2009, HB 2009. 2009.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Nishihara, N, Tanabe, S, Haneda, M, Uchida, S, Kawaguchi, G & Akiyama, Y 2009, Objective measurement of mental workload that affects productivity in moderately hot environment. in 9th International Conference and Exhibition - Healthy Buildings 2009, HB 2009. 9th International Healthy Buildings Conference and Exhibition, HB 2009, Syracuse, NY, 09/9/13.
    Nishihara N, Tanabe S, Haneda M, Uchida S, Kawaguchi G, Akiyama Y. Objective measurement of mental workload that affects productivity in moderately hot environment. In 9th International Conference and Exhibition - Healthy Buildings 2009, HB 2009. 2009
    Nishihara, Naoe ; Tanabe, Shinichi ; Haneda, Masaoki ; Uchida, Satoshi ; Kawaguchi, Gen ; Akiyama, Yuri. / Objective measurement of mental workload that affects productivity in moderately hot environment. 9th International Conference and Exhibition - Healthy Buildings 2009, HB 2009. 2009.
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