مشخصات پژوهش

صفحه نخست /Effects of mental workload on ...
عنوان
Effects of mental workload on physiological and subjective responses during traffic density monitoring: A field study
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Mental workload ECG EMG NASA-TLX Traffic control center
چکیده
This study evaluated operators' mental workload while monitoring traffic density in a city traffic control center. To determine the mental workload, physiological signals (ECG, EMG) were recorded and the NASA-Task Load Index (TLX) was administered for 16 operators. The results showed that the operators experienced a larger mental workload during high traffic density than during low traffic density. The traffic control center stressors caused changes in heart rate variability features and EMG amplitude, although the average workload score was significantly higher in HTD conditions than in LTD conditions. The findings indicated that increasing traffic congestion had a significant effect on HR, RMSSD, SDNN, LF/ HF ratio, and EMG amplitude. The results suggested that when operators' workload increases, their mental fatigue and stress level increase and their mental health deteriorate. Therefore, it maybe necessary to implement an ergonomic program to manage mental health. Furthermore, by evaluating mental workload, the traffic control center director can organize the center's traffic congestion operators to sustain the appropriate mental workload and improve traffic control management.
پژوهشگران رشید حیدری مقدم (نفر سوم)