Just Marcel Adam, Keller Timothy A, Cynkar Jacquelyn
Center for Cognitive Brain Imaging, Department of Psychology, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
Brain Res. 2008 Apr 18;1205:70-80. doi: 10.1016/j.brainres.2007.12.075. Epub 2008 Feb 19.
Behavioral studies have shown that engaging in a secondary task, such as talking on a cellular telephone, disrupts driving performance. This study used functional magnetic resonance imaging (fMRI) to investigate the impact of concurrent auditory language comprehension on the brain activity associated with a simulated driving task. Participants steered a vehicle along a curving virtual road, either undisturbed or while listening to spoken sentences that they judged as true or false. The dual-task condition produced a significant deterioration in driving accuracy caused by the processing of the auditory sentences. At the same time, the parietal lobe activation associated with spatial processing in the undisturbed driving task decreased by 37% when participants concurrently listened to sentences. The findings show that language comprehension performed concurrently with driving draws mental resources away from the driving and produces deterioration in driving performance, even when it does not require holding or dialing a phone.
行为研究表明，从事诸如使用手机通话之类的次要任务会干扰驾驶表现。本研究使用功能磁共振成像（fMRI）来探究同时进行的听觉语言理解对与模拟驾驶任务相关的大脑活动的影响。参与者在一条弯曲的虚拟道路上驾驶车辆，要么不受干扰，要么在听他们判断真假的口语句子的同时驾驶。双重任务条件导致由于处理听觉句子而使驾驶准确性显著下降。与此同时，当参与者同时听句子时，在不受干扰的驾驶任务中与空间处理相关的顶叶激活减少了37%。研究结果表明，即使在不需要手持或拨打手机的情况下，与驾驶同时进行的语言理解也会从驾驶中抽离精神资源，并导致驾驶表现下降。
