Dannewitz, a small number of previous studies suggest some antidepressants can negatively affect individuals' cognitive performance, impairing memory and reducing reaction time.
少量先前的研究表明一些抗抑郁药可以消极地影响个人的认知行为，损害记忆和减少反应时间。
Many controlled trials have examined the effects of caffeine on the brain, demonstrating that caffeine can improve mood, reaction time, memory, vigilance and general cognitive function.
很多实验表明咖啡因对大脑的有着积极的作用，能改善心情，减少反应时间，提升记忆力，提高警觉以及认知功能。
Cell phone conversation while driving creates "inattention blindness," a cognitive state that slows a driver's reaction time and limits his ability to detect changes in road conditions.
开车时用手机谈话可产生一种“疏忽性的视觉缺失”的认知状态，降低司机的反应时间并限制他探测公路条件改变的能力。
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