差分顔面皮膚放射温度を用いた運転ストレ評価の試み -単調這転ストレス負荷による基礎的検討- Feasibility Study on Assessment of Driver's Stress from Differential Skin Temperature Measurement under Simulated Monotonous Driving

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Prolonged monotonous driving may lower a driverʼs awareness level as well as increasing theirstress level due to the compulsion to maintain safe driving, which may result in an increased risk of a trafficaccident. There is therefore an opportunity for technological assessment of driver physiological status to beapplied in-car, hopefully reducing the incidence of potentially dangerous situations. As part of our long-term aimto develop such a system, we describe here the investigation of differential skin temperature measurement as apossible marker of a driverʼs stress level. In this study, after giving informed consent 25 healthy male (n= 18) &female (n= 7) subjects (26.8 ± 8.0 S.D. yrs) were investigated under environment-controlled conditions, whilstbeing subjected to simulated monotonous travel at constant speed on a test-course. We acquired physiologicalvariables, including facialskin temperature which consists of truncaland peripheralskin temperatures (Ts)using thermography, beat-by-beat blood pressure (BP), cardiac output (CO), totalperipheralresistance (TPR),and normalized pulse volume (NPV) used as an indicator of localperipheralvascul ar tone. We then investigatedthe driverʼs reactivity in terms of skin temperatures with this background of cardiovascular haemodynamics. Wefound that the simulated monotonous driving produced a gradualdrop in peripheralT s following the drivingstress, which, through interpretation of the TPR and NPV recordings, could be explained by peripheralsympathetic activation. On the other hand, the truncalT s was not influenced by the stress. These findings lead usto suggest that truncal-peripheraldifferentialT s could be used as a possible index indicative of the driverʼs stress.In fact, a significant correlation was confirmed between stress reference of BP and differential skin temperatures..

Prolonged monotonous driving may lower a driver's awareness level as well as increasing their stress level due to the compulsion to maintain safe driving, which may result in an increased risk of a traffic accident. There is therefore an opportunity for technological assessment of driver physiological status to be applied in-car, hopefully reducing the incidence of potentially dangerous situations. As part of our long-term aim to develop such a system, we describe here the investigation of differential skin temperature measurement as a possible marker of a driver's stress level. In this study, after giving informed consent 25 healthy male (<i>n</i> = 18) & female (<i>n</i> = 7) subjects (26.8 ± 8.0 S.D. yrs) were investigated under environment-controlled conditions, whilst being subjected to simulated monotonous travel at constant speed on a test-course. We acquired physiological variables, including facial skin temperature which consists of truncal and peripheral skin temperatures (T<sub>s</sub>) using thermography, beat-by-beat blood pressure (BP), cardiac output (CO), total peripheral resistance (TPR), and normalized pulse volume (NPV) used as an indicator of local peripheral vascular tone. We then investigated the driver's reactivity in terms of skin temperatures with this background of cardiovascular haemodynamics. We found that the simulated monotonous driving produced a gradual drop in peripheral T<sub>s</sub> following the driving stress, which, through interpretation of the TPR and NPV recordings, could be explained by peripheral sympathetic activation. On the other hand, the truncal T<sub>s</sub> was not influenced by the stress. These findings lead us to suggest that truncal-peripheral differential T<sub>s</sub> could be used as a possible index indicative of the driver's stress. In fact, a significant correlation was confirmed between stress reference of BP and differential skin temperatures.

収録刊行物

  • 生体医工学 : 日本エム・イー学会誌 = Transactions of the Japanese Society for Medical and Biological Engineering : BME

    生体医工学 : 日本エム・イー学会誌 = Transactions of the Japanese Society for Medical and Biological Engineering : BME 48(2), 163-174, 2010-04-10

    日本生体医工学会 JSMBE = Japan Society for Medical and Biological Engineering

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各種コード

  • NII論文ID(NAID)
    10031199758
  • NII書誌ID(NCID)
    AA11633569
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    1347443X
  • NDL 記事登録ID
    10713572
  • NDL 雑誌分類
    ZS18(科学技術--医学--医用機械・診断学・検査技術)
  • NDL 請求記号
    Z19-108
  • データ提供元
    CJP書誌  NDL  IR  J-STAGE 
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