Department of Occupational Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Institute for Cognitive and Brain Science, Shahid Beheshti University GC, Tehran, Iran.
J Safety Res. 2020 Feb;72:213-223. doi: 10.1016/j.jsr.2019.12.022. Epub 2020 Jan 14.
The use of mobile phones while driving is known to be a distraction factor and a cause of accidents. The way in which different kinds of conversations affect the behavioral performance of the driver as well as the persistence of the effects are not yet fully understood.
In this study, in addition to comparing brain function and behavioral function in dual task conditions in three conversations types, the persistent effects of these types of conversations have also been traced.
The results show that the content of the mobile phone conversation while driving is the cause of the persistent changes in behavioral and brain functions. Increased time headway and lane departure was observed during and up to 5 min after the emotional conversation was finished. EEG bands also varied in different types of conversations. Cognitive conversations caused an increase in the activity of the alpha and beta bands while emotional conversations enhanced the rate of gamma and beta bands. A meaningful correlation was found between changes in the theta and alpha bands and changes in behavioral performance both during the dual task condition and after the conversation was finished, was also observed.
The content of the conversation is one of the most important factors that increase the risk of road accidents. This can also deteriorate the behavioral performance of the driver and can have persistent effects on behavioral performance and the brain. Practical applications: The findings of this study provide a basis to measure and tracing drivers' cognitive distractions induced by different levels of mental workload through physiological and behavioral performances.
众所周知，开车时使用手机会分散注意力，导致事故发生。目前，人们还不完全了解不同类型的对话是如何影响驾驶员的行为表现，以及这些影响的持续时间。
在这项研究中，除了比较三种对话类型下的双重任务条件下的大脑功能和行为功能外，还追踪了这些类型的对话的持续效果。
结果表明，驾驶时手机通话的内容是导致行为和大脑功能持续变化的原因。在情感对话结束期间和结束后长达 5 分钟，观察到了时间间隔和车道偏离的增加。不同类型的对话也会改变脑电图带。认知对话会增加 alpha 和 beta 波段的活动，而情感对话会增强 gamma 和 beta 波段的速率。还观察到在双重任务条件下以及对话结束后，theta 和 alpha 波段的变化与行为表现的变化之间存在有意义的相关性。
对话的内容是增加道路交通事故风险的最重要因素之一。这也会恶化驾驶员的行为表现，并对行为表现和大脑产生持续影响。
本研究的发现为通过生理和行为表现来衡量和追踪驾驶员因不同程度的精神工作负荷而导致的认知干扰提供了依据。
