Fatigue contributes to the poor judgments that lead to accidents while driving. From a safety perspective, there would be an obvious benefit of knowing the behavioral and physiological antecedents of fatigue. Psychophysiological techniques may provide a continuous and objective index of driver state. The blood pressure variability (BPV) has been recognized as a means to assess the state of autonomic nervous activity. The monitoring of blood pressure variability might provide a sensitive index of driver mental fatigue. In this study an automotive driving simulator was used to simulate driver mental stress and workload. BPV variables including total power (TP), low-frequency power (LF), high-frequency power (HF) and LF/HF, together with test performance and subjective evaluation were used to assess the drivers' mental stress and fatigue. Combined with subjective evaluation the findings represent a possible utility of BPV spectral analysis including LF, HF and LF/HF in quantitatively evaluating driver mental fatigue.
Spectral analysis of blood pressure variability as a quantitative indicator of driving fatigue
Spektrale Analyse der Blutdruckschwankung als quantitativer Indikator für die Ermüdung des Fahrers
Journal of Dong Hua University. English Edition ; 21 , 1 ; 85-88
2004
4 Seiten, 3 Bilder, 4 Tabellen, 12 Quellen
Article (Journal)
English
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