Cao Rong, Wu Lü, Wang Shuzhen
School of Public Management, Northwest UniversityXi'an, China.
Front Behav Neurosci. 2017 May 22;11:90. doi: 10.3389/fnbeh.2017.00090. eCollection 2017.
Inhibition of return (IOR) is an important effect of attention. However, the IOR of emergency managerial experts is unknown. By employing emergency and natural scene pictures in expert-novice paradigm, the present study explored the neural activity underlying the IOR effects for emergency managerial experts and novices. In behavioral results, there were no differences of IOR effects between novices and emergency managerial experts, while the event-related potentials (ERPs) results were different between novices and experts. In Experiment 1 (novice group), ERPs results showed no any IOR was robust at both stimulus-onset asynchrony (SOA) of 200 ms and 400 ms. In Experiment 2 (expert group), ERPs results showed an enhanced N2 at SOA of 200 ms and attenuated P3 at cued location in the right parietal lobe and adjacent brain regions than uncued location at SOA of 200 ms. The findings of the two experiments showed that, relative to the novices, IOR for the emergency managerial experts was robust, and dominated in the right parietal lobe and adjacent brain regions, suggesting more flexible attentional processing and higher visual search efficiency of the emergency managerial experts. The findings indicate that the P3, possible N2, over the right parietal lobe and adjacent brain regions are the biological indicators for IOR elicited by post-cued emergency pictures for emergency managerial experts.
返回抑制（IOR）是注意力的一种重要效应。然而，应急管理专家的返回抑制情况尚不清楚。本研究采用专家-新手范式，利用应急场景图片和自然场景图片，探究了应急管理专家和新手返回抑制效应背后的神经活动。行为结果显示，新手和应急管理专家在返回抑制效应上没有差异，但新手和专家在事件相关电位（ERP）结果上存在差异。在实验1（新手组）中，ERP结果显示，在200毫秒和400毫秒的刺激起始异步（SOA）时，均未出现明显的返回抑制。在实验2（专家组）中，ERP结果显示，在200毫秒的SOA时，与未提示位置相比，提示位置在右侧顶叶及相邻脑区的N2增强，P3减弱。两个实验的结果表明，相对于新手，应急管理专家的返回抑制更强，且主要发生在右侧顶叶及相邻脑区，这表明应急管理专家具有更灵活的注意力加工和更高的视觉搜索效率。研究结果表明，右侧顶叶及相邻脑区的P3以及可能的N2是应急管理专家在提示后应急图片诱发返回抑制的生物学指标。
