Are We Sensitive to Different Types of Safety Signs? Evidence from ERPs
Are We Sensitive to Different Types of Safety Signs? Evidence from ERPs
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DOI：
10.2147/prbm.s248947
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发表时间：
2020-01-01
影响因子：
4.3
通讯作者：
Jin, Jia
中科院分区：
文献类型：
--
作者：
Bian, Jun;Fu, Huijian;Jin, Jia
用途：安全标志广泛用于传递安全信息。有许多不同类型的安全标志。虽然以往的研究都关注安全标志的设计和有效性，但很少有人关注人们如何处理不同类型的安全标志所传达的信息。因此，本研究旨在探讨人们对不同类型安全标志感知的神经机制。方法：采用禁止、强制、警示三种安全标志。我们采用问卷调查和事件相关电位（erp）实验，以内隐范式探讨人们如何感知这三种类型的安全标志。结果：在行为上，警示标志诱导的危险感知水平高于禁止标志和强制性标志，禁止标志诱导的危险感知水平高于强制性标志。在大脑层面，禁止标志和警告标志比强制标志导致P2振幅降低。此外，警示标志诱导的N2和N4幅度大于禁止标志和强制性标志，禁止标志诱导的N2和N4幅度大于强制性标志，与行为结果一致。结论：不同类型的安全标志导致个体的危险感知存在显著差异。基于神经学结果，我们认为安全标志的加工包括两个阶段：快速检测危险信息（由P2表示）和有意识地将危险信息整合到工作记忆中（由N2和N4表示）。
Purpose: Safety signs are widely used to deliver safety-related information. There are many different types of safety signs. Although previous studies have paid attention to the design and effectiveness of safety signs, little attention has been devoted to investigating how people process the information conveyed by different types of safety signs. Accordingly, the current study is intended to explore the neural mechanisms underlying people's perception of different types of safety signs.Methods: Three types of safety signs (prohibition, mandatory and warning signs) were used in the study. We employed questionnaire and event-related potentials (ERPs) experiment with an implicit paradigm to probe how people perceive these three types of safety signs.Results: Behaviorally, warning signs induced a higher level of perceived hazard than prohibition signs and mandatory signs, and prohibition signs induced a higher level of perceived hazard than mandatory signs. At the brain level, prohibition signs and warning signs led to reduced P2 amplitudes compared to mandatory signs. In addition, warning signs elicited larger N2 and N4 amplitudes than prohibition signs and mandatory signs, and prohibition signs elicited larger N2 and N4 amplitudes than mandatory signs, coinciding with the behavioral results.Conclusion: Different types of safety signs led to significant differences in individuals' hazard perception. Based on the neural results, we suggest that the processing of safety signs consists of two stages: the rapid detection of hazard information (indicated by P2) and the conscious integration of hazard information in working memory (indicated by N2 and N4).