Neuroticism related differences in the functional neuroanatomical correlates of multitasking. An fMRI study
Neuroticism related differences in the functional neuroanatomical correlates of multitasking. An fMRI study
复制标题
DOI：
10.1016/j.neulet.2016.10.029
复制
发表时间：
2016-12
影响因子：
2.5
通讯作者：
A. Szameitat;Rahmi Saylik;A. Parton
中科院分区：
文献类型：
--
作者：
A. Szameitat;Rahmi Saylik;A. Parton
众所周知，神经质损害认知性能主要是在困难的任务，但不是那么容易的任务。这种类型的一种普遍情况是多任务处理，在这种情况下，两个简单任务的组合产生了一个高要求的双重任务，因此，高神经症患者比低神经症患者表现出更高的双重任务成本。然而，在高度神经症患者中，这些额外的表现障碍的功能神经解剖学相关性尚不清楚。为了验证这一点，我们通过功能性磁共振成像（fMRI）评估了17名低神经症患者和15名高神经症患者的大脑活动，同时他们正在执行要求较高的双重任务和要求较低的组件任务作为单一任务。行为的结果表明，性能（响应时间和错误率）是较低的双任务比单任务（双任务成本），这些双任务成本显着较高的神经症。影像学资料显示，高度神经症患者在外侧（主要是额中回）和内侧前额叶皮质的双任务特异性激活较少。我们的结论是，高水平的神经质损害的行为表现，在苛刻的任务，这种损害是伴随着减少激活的任务相关的大脑区域。
It is known that neuroticism impairs cognitive performance mostly in difficult tasks, but not so much in easier tasks. One pervasive situation of this type is multitasking, in which the combination of two simple tasks creates a highly demanding dual-task, and consequently high neurotics show higher dual-task costs than low neurotics. However, the functional neuroanatomical correlates of these additional performance impairments in high neurotics are unknown. To test for this, we assessed brain activity by means of functional magnetic resonance imaging (fMRI) in 17 low and 15 high neurotics while they were performing a demanding dual-task and the less demanding component tasks as single-tasks. Behavioural results showed that performance (response times and error rates) was lower in the dual-task than in the single-tasks (dual-task costs), and that these dual-task costs were significantly higher in high neurotics. Imaging data showed that high neurotics showed less dual-task specific activation in lateral (mainly middle frontal gyrus) and medial prefrontal cortices. We conclude that high levels of neuroticism impair behavioural performance in demanding tasks, and that this impairment is accompanied by reduced activation of the task-associated brain areas.